JP2020060065A - Panel for mold frame - Google Patents

Abstract

To provide a panel for a mold frame capable of reducing a labor for manufacturing by reducing the number of components while reassuring a strength.SOLUTION: A panel 1 for a mold frame comprises: an outer frame part 11 in a frame shape having at least one pair of sides 11a parallel to each other; at least one first bridge part 12 in a rod shape installed over between the pair of sides 11a; at least one second bridge part 21 installed over the outer frame part 11 extending straight in a direction to intersect with the first bridge part 12; and a plurality of net parts 22 in a net shape. The second bridge parts 21 and the net parts 22 are arranged alternately and provided integrally, and are joined to the outer frame part 11 and the first bridge part 12 on either surface while covering either surface of the outer frame part 11.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a formwork panel used for driving concrete.

  BACKGROUND ART When constructing a concrete work (for example, a wall), concrete driving is performed. Here, in the present specification, "concreting of concrete" refers to a work in which an enclosure called a form is provided, fresh concrete (concrete before hardening) is put in the form, and the fresh concrete is further hardened. Say. Further, the formwork is often formed by combining a plurality of formwork panels.

  Conventionally, plywood and metal plates have been used for formwork panels. Then, the formwork panels such as plywood and metal plates are removed after the concrete has hardened. For this reason, when using plywood or a metal plate for the formwork panel, the effort to install the formwork using the formwork panel, the effort to remove the formwork panel after the concrete has hardened, and the formwork panel When the panel is deteriorated, it takes a lot of labor to dispose of the panel, which imposes a great burden on the worker. On the other hand, Patent Document 1 discloses a formwork panel capable of reducing the burden on the operator.

  Patent Document 1 describes a formwork panel, which is provided with a lattice-shaped frame body. The frame body includes an outer frame portion formed in a rectangular frame shape. A plurality of rod-shaped first bridging portions extending laterally are provided between two vertically extending sides of the outer frame portion, and the plurality of first bridging portions are vertically spaced from each other. Are arranged. A plurality of reinforcing vertical wires arranged laterally at intervals are stacked on the outer frame portion and the plurality of first bridging portions, and the outer frame portion and the plurality of first bridging portions are stacked. And a plurality of vertical reinforcing wires are welded to each other. Further, on these reinforcing vertical wires, a plurality of reinforcing horizontal wires arranged at intervals in the vertical direction are stacked, and a plurality of reinforcing vertical wires and a plurality of reinforcing horizontal wires are welded to each other. There is. The net portion is provided on the frame body having the above configuration so as to cover the four sides of the frame body. Further, the net portion is welded to the outer frame portion forming the frame body, the plurality of reinforcing vertical wires, and the plurality of reinforcing horizontal wires. Here, the formwork panel includes an outer frame portion, a plurality of first bridging portions, a plurality of reinforcing vertical wires and a plurality of reinforcing horizontal wires, and these are reinforced by welding.

  The formwork panel described in Patent Document 1 is provided with the net portion as described above, and when used as the peripheral wall of the formwork, a small amount of fresh concrete leaks from the net portion and is embedded in the concrete. It has become. Therefore, if the formwork panel described in Patent Document 1 is used, it is not necessary to remove the concrete after it has hardened, so that the burden on the operator can be reduced.

JP, 2000-120078, A

  However, the formwork panel described in Patent Document 1 requires a great deal of labor for its production, as described below. As described above, since the reinforcing horizontal wires are stacked on the reinforcing vertical wires, the reinforcing vertical wires are located on the lower side and the reinforcing horizontal wires are located on the upper side. There is. The mesh portion covers the plurality of reinforcing vertical wires and the plurality of reinforcing horizontal wires, and unevenness is formed by being welded to the lower reinforcing vertical wire and the upper reinforcing horizontal wire. Then, when welding the lower reinforcing vertical wire and the mesh portion, the portion where the mesh portion and the reinforcing vertical wire are welded is on the lower reinforcing vertical wire, and the mesh portion is more than the portion to be welded. It is pulled upwards. For this reason, at the place to be welded, if the net portion is not pressed down during the welding, the net portion is pulled upward during the welding, and the reinforcing vertical wire and the net portion are separated from each other. It may not be possible to weld. Due to such a thing, labor is required for welding the mesh portion to the plurality of reinforcing vertical wires and the plurality of upper reinforcing horizontal wires.

  Further, in order to ensure strength, the formwork panel described in Patent Document 1 includes not only the outer frame portion and the plurality of first bridging portions, but also a plurality of reinforcing vertical wires and a plurality of reinforcing horizontal wires. I have it. Effort is required to weld these outer frame portion, the plurality of first bridge portions, the plurality of reinforcing vertical wires, and the plurality of reinforcing horizontal wires. As described above, the formwork panel described in Patent Document 1 has a large number of parts in order to secure the strength, and thus requires a large amount of labor for production.

  The present invention has been devised in view of such a point, and the problem to be solved by the present invention is to secure strength and reduce the labor for creating by reducing the number of parts. It is to provide a formwork panel that can be.

  According to one feature of the present invention, the formwork panel is a formwork panel used for driving concrete, wherein the formwork panel includes at least one pair of parallel sides, and At least one rod-shaped first bridge portion bridged between a pair of sides, and at least one second bridge extending straight in a direction intersecting the first bridge portion and bridged to the outer frame portion. And a plurality of net-like nets, the second cross-linking parts and the nets are alternately arranged and integrally provided to cover one surface of the outer frame part and It is joined to the outer frame portion and the first bridging portion on the direction.

  As a result, the mold panel of the present invention is reinforced by the outer frame portion, the first cross-linking portion, and the second cross-linking portion, so that the strength is secured. Moreover, since the plurality of second bridge portions and the net portion are integrally provided, the number of parts is reduced. Therefore, the formwork panel of the present invention can secure the strength and can reduce the labor for producing it by reducing the number of parts.

  Further, in the frame of the outer frame part, a first bridge part is bridged between a pair of sides of the outer frame part. Since the net portion is joined to the first bridging portion bridged in the frame of the outer frame portion, unevenness is unlikely to occur in the net portion due to joining to the first bridging portion. Therefore, the mesh portion and the first bridge portion can be joined relatively easily. Further, the formwork panel has a mesh portion, and when used as a peripheral wall of the formwork, a small amount of fresh concrete leaks from the mesh portion so that it can be embedded in concrete. Therefore, it is not necessary to remove the formwork panel after the concrete has hardened, and the labor of the operator can be reduced.

  Further, in the formwork panel of the present invention, it is preferable that the mesh portion has a band portion that extends in parallel with the second bridge portion and crosses the outer frame portion. As a result, the net portion includes the band portion that can be more easily joined to the outer frame portion and the bridge portion, as described below, and thus the labor for creating the form panel can be further reduced. .

  It can be considered that the contact area with the rod-shaped first cross-linking portion is wider when the contacting object is in a band shape than in a mesh shape. When the rod-shaped first cross-linking portion is joined, the strip-shaped one is joined more easily than the net-shaped one because the contact area is wider than the net-shaped one. You can think that you can. In the above, the object of joining is the rod-shaped first bridge portion, but the same can be considered when the object of joining is the frame-shaped outer frame portion. Therefore, since the band part is formed in a band shape, it can be considered that the outer frame part and the first bridge part can be more easily joined.

  Further, in the mold panel of the present invention, the mesh portion is a mesh plate body that is a plate and is provided so that a plurality of holes penetrating in the plate thickness direction are densely packed with the second bridge portion. The two adjacent hole portions provided between the band portion and the band portion are provided with a band plate portion therebetween, and a plane orthogonal to the plate thickness direction of the band plate portion is defined as a first virtual plane, and the outer frame portion When the plane parallel to the one surface is the second virtual plane, it is preferable that the dihedral angle between the first virtual plane and the second virtual plane be set in an acute angle relationship.

  Thereby, as explained below, the formwork panel can dam the fresh concrete more reliably. When the fresh concrete is poured into the inside of the formwork including the formwork panel as the peripheral wall, the formwork panel is configured to face the fresh concrete and dam the fresh concrete. At this time, since the net plate portion provided between the second bridge portion and the band portion faces the fresh concrete, it is necessary to configure the net plate portion so that the fresh concrete can be dammed. There is. The mesh plate member is a plate and is provided such that a plurality of holes penetrating in the plate thickness direction are densely packed, and the band plate part is provided between two adjacent hole parts. In other words, the mesh plate portion has a plurality of holes as meshes, and the strip plate portion around the meshes. Then, the strip plate portion of the mesh plate body portion is configured to face the fresh concrete and dam the fresh concrete.

  The larger the projected area of the strip plate portion with respect to the surface of the mesh plate portion facing the fresh concrete, the larger the actual area of the strip plate portion facing the fresh concrete becomes, so that the strip plate portion is more sure to remove the fresh concrete. You can think that you can stop it. Here, the surface of the mesh plate portion facing the fresh concrete can be considered to be in a position parallel to the second virtual plane that is a plane parallel to the one surface of the outer frame portion. Accordingly, the projected area of the strip plate portion with respect to the surface facing the fresh concrete is the same as the projected area of the strip plate portion with respect to the second virtual plane. Therefore, it can be considered that the larger the projected area of the strip plate portion with respect to the second virtual plane, the larger the substantial area where the strip plate portion faces the fresh concrete. Further, it is considered that the smaller the dihedral angle between the first virtual plane that is a plane orthogonal to the plate thickness direction of the strip plate and the second virtual plane, the larger the projected area of the strip plate with respect to the second virtual plane. You can

  Here, since the dihedral angle between the first imaginary plane and the second imaginary plane is set to have an acute angle, the second imaginary plane can be more surely blocked by the strip plate portion so as to block the fresh concrete. The size of the projected area of the strip plate portion with respect to the plane can be secured. Then, the mesh plate body portion including the strip plate portion can block fresh concrete more reliably, and by extension, the formwork panel can block fresh concrete more reliably.

  Further, in the formwork panel of the present invention, it is preferable that all the band portions are joined to the outer frame portion and the first bridge portion. Thus, the mesh portion having the band portion is more surely joined to the outer frame portion and the first bridge portion, so that the formwork panel can be reinforced more reliably.

  The present invention can provide a formwork panel that has the above-described configurations of the inventions, which can secure the strength and can reduce the labor for producing by reducing the number of parts. .

FIG. 3 is a schematic perspective view of a formwork formed by using the formwork panel according to the first embodiment. FIG. 3 is an exploded perspective view of the form panel according to the first embodiment. FIG. 3 is a perspective view of the formwork panel according to the first embodiment. It is explanatory drawing explaining the shape of the mesh plate part in the form panel concerning Embodiment 1. FIG. It is explanatory drawing explaining the shape of the mesh plate part in the form panel concerning Embodiment 1. FIG. It is explanatory drawing explaining the shape of the mesh plate part in the form panel concerning Embodiment 1. FIG. It is explanatory drawing explaining the shape of the mesh plate part in the form panel concerning Embodiment 1. FIG. FIG. 6 is an exploded perspective view of a formwork panel according to the second embodiment. It is a perspective view of the formwork panel which concerns on Embodiment 2. It is explanatory drawing explaining the shape of the mesh plate part in the formwork panel which concerns on Embodiment 2. It is explanatory drawing explaining the shape of the mesh plate part in the formwork panel which concerns on Embodiment 2. It is explanatory drawing explaining the shape of the mesh plate part in the formwork panel which concerns on Embodiment 2. It is explanatory drawing explaining the shape of the mesh plate part in the formwork panel which concerns on Embodiment 2.

<< 1. About Embodiment 1 >>
Embodiment 1 for carrying out the present invention will be described below with reference to FIGS. The formwork panel 1 of Embodiment 1 is used for driving concrete. A mold 500 formed by combining a plurality of mold panel 1 is used for concrete driving. FIG. 1 is a schematic perspective view of the mold 500. As shown in FIG. 1, the formwork 500 is an enclosure including a peripheral wall formed by arranging a plurality of formwork panels 1. As shown in FIG. 1, in a mold 500, adjacent mold panel 1 is held by being bound to each other by a wire 501. The mold panel 1 facing each other is fixed to both ends of the substantially rod-shaped separator 502. Further, as shown in FIG. 1, the mold 500 is provided with a large number of separators 502. As a result, the mold panel 1 facing each other is held by the multiple separators 502 so that the distance between them is constant.

  In concrete injection, in order to form concrete into a shape such as a wall, first, a form 500 is provided, then fresh concrete is put in the form 500, and the fresh concrete is further hardened. . Here, the fresh concrete slightly leaks from the formwork panel 1 of the formwork 500, and then the fresh concrete hardens, so that the formwork panel 1 is embedded in the concrete. Further, when the fresh concrete contained in the mold 500 largely leaks from the mold 500, the fresh concrete cannot be hardened into a desired shape. Therefore, the mold panel 1 used as the peripheral wall of the mold 500 is a fresh mold. It is constructed so that concrete can be dammed. That is, the formwork panel 1 is configured so that fresh concrete can be slightly leaked while damming the fresh concrete. For this reason, the formwork panel 1 of the present embodiment has a configuration described below. The shape of the mold 500 can be changed as appropriate, and for example, in order to reinforce the mold 500, a pipe can be attached to the outside of the mold 500.

  Further, in the following description, as shown in FIG. 1, the vertical and horizontal directions of the mold frame panel 1 are determined with reference to the time when the mold frame 500 is assembled. In all the drawings in which the vertical direction and the horizontal direction are described, these directions show the same direction, and the vertical direction and the horizontal direction in the following description are the same as the vertical direction and the horizontal direction shown in FIG. Means direction. In the following description, illustrations and detailed descriptions of the auxiliary structures of the mold 500 and the mold panel 1 are omitted.

<1-1. Configuration of Formwork Panel 1 (FIGS. 2 to 7)>
FIG. 2 is an exploded perspective view of the formwork panel 1, and FIG. 3 is a perspective view of the formwork panel 1. As shown in FIGS. 2 and 3, the formwork panel 1 includes a panel skeleton portion 10 and a damming net portion 20 attached to the panel skeleton portion 10. As shown in FIG. 2, the panel skeleton portion 10 includes a rectangular frame-shaped outer frame portion 11 and two first bridge portions bridged between two vertically extending sides 11 a of the outer frame portion 11. It has twelve.

  The outer frame portion 11 includes two sides 11a extending in the vertical direction and two sides 11b extending in the horizontal direction. The two sides 11a extending in the vertical direction are parallel to each other and make a pair, and the two sides 11b extending in the horizontal direction are also parallel to each other and make a pair. As shown in FIG. 2, the outer frame portion 11 is formed into a single body by joining four iron bars corresponding to each of these four sides at both ends. The joining can be performed by welding or may be performed by adhesion. Here, the diameters of the two sides 11a extending in the vertical direction and the two sides 11b extending in the horizontal direction may be appropriately changed. Further, although the outer frame portion 11 is made of iron, it may be made of a metal other than iron or a resin.

  As shown in FIG. 2, the first bridging portion 12 is formed in a rod shape that is bridged between a pair of vertically extending sides 11 a, and both ends are joined to the side 11 a of the outer frame portion 11. There is. The joining can be performed by welding or may be performed by adhesion. Here, the first bridging portion 12 is joined to the inside of the frame of the outer frame portion 11 on the side 11a, and the first bridging portion 12 is bridged inside the frame of the outer frame portion 11. . As a result, the first bridging portion 12 is not stacked on the outer frame portion 11, and a step is unlikely to occur between the outer frame portion 11 and the first bridging portion 12. As will be described later, the net portion 22 of the damming net portion 20 covers one surface of the outer frame portion 11 (the upper surface of the outer frame portion 11 in FIG. 2 and FIG. 3), and The outer frame portion 11 and the first bridging portion 12 are joined together in the direction (on the upper surface of the outer frame portion 11 in FIGS. 2 and 3). Since the step is unlikely to occur between the outer frame portion 11 and the first bridge portion 12, when the net portion 22 is joined to the outer frame portion 11 and the first bridge portion 12, Unevenness is less likely to occur in the net portion 22.

  Furthermore, as described below, it is possible to easily join the net portion 22, the outer frame portion 11 and the first bridge portion 12 together. If a step is formed between the outer frame portion 11 and the first bridging portion 12 and the mesh portion 22 is joined to each other to form unevenness in the mesh portion 22, the concave portion of the mesh portion 22 will be described. In addition, at the location where it is joined to the outer frame portion 11 or the first bridge portion 12, the net portion 22 is pulled upward during the joining. Then, at this joining portion, the net portion 22 is pulled upward even during the joining unless the net portion 22 is continuously pressed downward during joining, so the net portion 22 is separated from the joining portion. It may happen that it cannot be joined. As described above, if a step is formed between the outer frame portion 11 and the first bridging portion 12 and the mesh portion 22 is uneven, it takes a lot of effort to join them. Although the first cross-linking portion 12 is made of iron, it may be made of a metal other than iron or a resin.

  On the other hand, in the present embodiment, as described above, the first bridge portion 12 is not stacked on the outer frame portion 11, and a step is formed between the outer frame portion 11 and the first bridge portion 12. It is a structure that is unlikely to occur. Even if there is a step between the outer frame portion 11 and the first bridge portion 12, even if the mesh portion 22 is joined to the outer frame portion 11 and the first bridge portion 12, unevenness occurs in the net portion 22. Hateful. Therefore, the mesh portion 22 and the first cross-linking portion 12 can be joined relatively easily because it is not necessary to continue pressing the net portion 22 downward during the joining as described above. As in the case of forming the outer frame portion 11, the joining can be performed by welding or may be performed by adhesion. The panel skeleton portion 10 shown in FIGS. 2 and 3 is provided with two first bridge portions 12 at an interval, but the number of the first bridge portions 12 may be one or more. , Can be changed as appropriate.

  As shown in FIG. 2, the damming net portion 20 is provided with a plurality of second bridge portions 21 and a plurality of net portions 22 extending in the vertical direction, and these are alternately arranged in the horizontal direction and integrally formed. Has been formed. The second cross-linking portion 21 extends in the vertical direction, cuts the damming net portion 20 vertically, and reinforces the damming net portion 20. For this reason, the second bridging portion 21 shown in FIG. 2 is bent so that the cross section in the lateral direction has a substantially Ω shape. The shape of the second bridging portion 21 is set so as to be more rigid than the mesh plate portion 221 of the mesh portion 22 described below. Further, the second bridging portion 21 has only to have the rigidity required for the formwork panel 1, and the shape thereof can be appropriately changed. The shape of the second bridge portion 21 may be, for example, a thick plate shape. In addition, the shape of the second bridging portion 21 is also convex in the lateral direction so that the cross section in the lateral direction has an inverted U shape, an inverted V shape, a μ shape, a trapezoidal shape, or the like. It may be bent. Further, as shown in FIG. 2, the second cross-linking portions 21 are provided at both lateral ends of the damming net portion 20. By thus providing the second bridging portions 21 at both ends of the damming mesh portion 20, the rigidity of the mesh portion 22 is secured at both lateral ends of the formwork panel 1. Although the damming net portion 20 is made of iron, it may be made of metal or resin other than iron.

  The mesh portion 22 is provided integrally with a mesh plate portion 221 having a mesh and band portions 222 adjacent to the mesh plate portion 221 and extending in the vertical direction alternately. As schematically shown in FIG. 3, the mesh plate portion 221 includes a hole portion 221a serving as a mesh of the mesh plate portion 221 and a plurality of bent strip plates surrounding the hole portion 221a. And a portion 221b. In other words, in the net part 22, the net part 221, which is a plate and is provided so that the plurality of holes 221a penetrating in the plate thickness direction are densely packed, is connected to the second bridging part 21. Two adjacent hole portions 221a provided between the band portion 222 and the band portion 222 are provided with a band plate portion 221b therebetween.

  The mesh plate portion 221 and the formation process thereof will be described below with reference to FIGS. 3 to 7. The following description and the height direction shown in FIG. 7, the plate thickness direction of the mesh plate body portion 221 (see FIG. 3), and the plate thickness direction of the formwork panel 1 indicate the same direction (see FIGS. 3 and 7). ). As shown in FIG. 4, by extending the plate-shaped body portion 221H in which a plurality of cuts 221Ha are arranged in parallel so that the width of the plurality of cuts 221Ha is expanded, as shown in FIG. The mesh plate member 221 of this embodiment is formed. Here, as shown in FIG. 4, in the plate-shaped body portion 221H before being stretched, a plurality of cuts 221Ha are arranged in a zigzag pattern with the left and right adjacent ones being vertically displaced. ing.

  As the plate member 221H is stretched to become the mesh plate member 221, the cut 221Ha (see FIG. 4) is laterally stretched in width to become the hole 221a (see FIG. 5). If the mesh plate member 221 is further stretched in the lateral direction, the mesh plate member 221 (see FIG. 5) becomes the mesh plate member 221W (see FIG. 6), and the hole 221a of the mesh plate member 221 is formed. (See FIG. 5) becomes a hole portion 221Wa (see FIG. 6) further extended in the lateral direction. Further, in the following description, the cut 221Ha means a hole extending from the cut 221Ha of the plate-shaped body 221H in the state before being stretched to the hole 221a after being stretched. Further, the hole portion 221Wa means a hole portion when the mesh plate body portion 221 is excessively stretched (for example, the mesh plate body portion 221W in FIG. 6). The damming net portion 20 of the present embodiment basically includes a mesh plate portion 221 as shown in FIG. 5, but the dam net portion 20 is partially replaced with the mesh plate portion 221. The mesh plate member 221 may have an excessively stretched portion like the mesh plate member 221W (see FIG. 6).

  As shown in FIG. 4, in the plate-like body portion 221H in which a plurality of cuts 221Ha arranged in parallel are provided before being stretched, the strip plate portion 221Hb, which is a portion between two adjacent cuts 221Ha, is It has an elongated plate shape that extends straight in the vertical direction. When the plate-shaped body portion 221H in the state before being stretched is stretched, the width of the strip plate portion 221Hb and the cut 221Ha is expanded by bending the strip plate portion 221Hb, and as a result, the strip plate portion 221Hb and the cut 221Ha (FIG. 4). (Refer to FIG. 5) is the strip plate portion 221b and the hole portion 221a (see FIG. 5) of the mesh plate body 221.

  In the plate-shaped body portion 221H in the state before being stretched shown in FIG. 4, the width of the strip plate portion 221Hb is the width between two adjacent cuts 221Ha, which are closer to each other than the thickness of the strip plate portion 221Hb. Is also long. Therefore, the strip plate portion 221Hb is easily bent in the plate thickness direction, but is hard to be bent in the lateral direction (width direction). Then, even if the plate-shaped body portion 221H in the state before being stretched shown in FIG. 4 is bent in the plate thickness direction of the strip plate portion 221Hb (that is, the plate thickness direction of the plate-shaped body portion 221H), this plate thickness direction And the width direction are orthogonal to each other, it is impossible to widen the width of the plurality of cuts 221Ha and stretch the plate-shaped body portion 221H in the lateral direction (width direction). Therefore, since the strip plate portion 221Hb widens and bends in the plate thickness direction, when the plate body portion 221H (see FIG. 4) in the state before being stretched is stretched, the strip plate portion 221Hb bends and gradually rotates. To do. The rotation of the strip plate portion 221Hb is a rotation in which the plate thickness direction of the strip plate portion 221Hb in the strip plate portion 221Hb is in the lateral direction (width direction) before rotation (see FIGS. 4 to 7).

  FIG. 7 shows a cross section (see FIG. 4) in the plate thickness direction of the plate-shaped body 221H in the band-shaped plate 221Hb of the plate-shaped body 221H before being stretched, and the band-shaped plate of the mesh plate 221. A cross section in the plate thickness direction of the mesh plate part 221 in 221b (see FIG. 5), and a mesh plate part of the strip plate part 221Wb of the mesh plate part 221W in a state where the mesh plate part 221 is further stretched. Three cross-sections (see FIG. 6) in the plate thickness direction of 221 W are overlapped and schematically shown. That is, in FIG. 7, a cross section (see FIG. 4) of the strip plate portion 221Hb in a state before being stretched is shown by a solid line. Further, in FIG. 7, a cross section (see FIG. 5) of the strip plate portion 221b included in the mesh plate body portion 221 of the present embodiment in which the plate body portion 221H is stretched is shown by an imaginary line. Further, in FIG. 7, a cross section (see FIG. 6) of the strip plate portion 221Wb included in the mesh plate body portion 221W formed by further stretching the mesh plate body portion 221 is shown by an imaginary line. As shown in FIG. 7, when the plate-shaped body portion 221H is stretched, the strip plate portion 221Hb becomes the strip plate portion 221b, and as it becomes the strip plate portion 221Wb, it faces in the height direction.

  Therefore, as the plate-shaped body portion 221H before being stretched is stretched, the projected area of the strip plate portion 221Hb with respect to the surface of the plate-shaped body portion 221H that expands in the lateral direction (width direction) and the vertical direction becomes smaller (FIG. 7). And FIGS. 4 to 6). Here, the projected area of the strip plate portion 221Hb is the same as the projected area of the strip plate portion 221Hb with respect to the surface of the mesh plate body portion 221, and further, as shown in FIG. It has the same size as the projected area of the strip plate portion 221Hb with respect to one surface (the surface on the upper side of the outer frame portion 11 in FIG. 3).

  As shown in FIGS. 2 and 5, the mesh plate portion 221 has a plurality of strip plate portions 221b, and the larger the projected area of the strip plate portion 221b with respect to the surface of the mesh plate portion 221, the more strips. The plate part 221b closes the surface of the mesh plate part 221. As shown in FIG. 3, the formwork panel 1 has a damming net 20 covering the upper surface of the panel skeleton 10, and the damming net 20 includes a second bridge portion 21, a band portion 222, and a mesh shape. It is composed of a plate portion 221. Then, as shown in FIG. 3, as long as the mesh plate member 221 is closed, the form panel 1 is closed. Therefore, as described above with reference to FIG. 1, in order to form the formwork panel 1 so that fresh concrete can be dammed, the mesh plate body portion 221 is densely packed to the extent that fresh concrete can be dammed. You can close it. As described below, "closely close the mesh plate body portion 221" means to close the surface of the mesh plate body portion 221 to the extent that the mesh plate body portion 221 can block fresh concrete. is there.

  Further, as described above, the strip plate portion 221Hb rotates and bends as described above (see FIGS. 4 to 6), and the more the strip plate portion 221Hb is bent, the more the strip plate portion 221Hb is bent. The internal angle θ1 of the part that is being reduced becomes smaller (see FIGS. 4 to 6). Here, the internal angle θ1 of the bent portion of the strip plate portion 221Hb is the internal angle θ1 of the intersection point generated by extending two linear portions that sandwich the curved portion of the strip plate portion 221Hb. That is. In FIG. 4, since the strip plate portion 221Hb is not bent, the interior angle θ1 of the bent portion of the strip plate portion 221Hb can be regarded as 0. On the other hand, the interior angle θ1 of the bent portion of the strip plate portion 221b is an obtuse angle larger than 90 degrees and smaller than 180 degrees (see FIGS. 2 and 5). On the other hand, in the band plate portion 221Wb that is further bent from the band plate portion 221b, the internal angle θ1 of the bent portion is an acute angle smaller than 90 degrees (see FIG. 6).

  Thus, the smaller the internal angle θ1 of the bent portion of the strip plate portion 221b is, the more the strip plate portion 221b is rotated, and the projected area of the strip plate portion 221b with respect to the surface of the mesh plate body portion 221 is small (see FIG. 4). (See FIG. 7). In other words, the larger the internal angle θ1 of the bent portion of the strip plate portion 221b, the larger the projected area of the strip plate portion 221b with respect to the surface of the mesh plate body portion 221 and the plurality of strip plate portions 221b. The part 221 is closed more tightly (see FIGS. 4 to 7). Therefore, in the present embodiment, the internal angle θ1 of the bent portion of the strip plate portion 221b can be set to an obtuse angle larger than 90 degrees and smaller than 180 degrees. Further, the interior angle θ1 can be set to an angle larger than 100 degrees and smaller than 170 degrees. If the internal angle θ1 is less than 100 degrees, the plurality of strip plate portions 221b may not sufficiently close the mesh plate body portion 221. If the interior angle θ1 is larger than 170 degrees, the plurality of strip plate portions 221b may close the mesh plate body portion 221 too tightly.

  In the above, in order to secure the projected area of the strip plate portion 221b with respect to the surface of the mesh plate portion 221, the setting of the internal angle θ1 of the bent portion of the strip plate portion 221b has been described. Here, as shown in FIG. 3, the surface of the mesh plate body portion 221 is parallel to the above-mentioned one surface of the outer frame portion 11 (the upper surface of the outer frame portion 11 in FIG. 3). Therefore, a plane parallel to the upper surface of the outer frame portion 11 is defined as a second virtual plane VP2 as shown in FIG. The second virtual plane VP2 is a surface that extends in the vertical direction and the horizontal direction, as shown in FIGS. 3 and 7. Since the surface of the mesh plate body portion 221, the upper surface of the outer frame portion 11, and the second virtual plane VP2 have a positional relationship parallel to each other, the projection of the strip plate portion 221b onto the surface of the mesh plate body portion 221. The area is equal to the projected area of the strip plate portion 221b with respect to the second virtual plane VP2.

  Further, as shown in FIGS. 7 and 3, a plane orthogonal to the plate thickness direction of the strip plate portion 221b is referred to as a first virtual plane VP1. Note that FIG. 3 shows the first virtual plane VP1 for the strip plate portion 221bx shown in FIG. 3 as an example of the first virtual plane VP1. As shown in FIG. 7, the smaller the dihedral angle θ2 between the first virtual plane VP1 and the second virtual plane VP2, the larger the projected area of the strip plate portion 221b with respect to the surface of the mesh plate body portion 221. Therefore, in the present embodiment, the dihedral angle θ2 between the first virtual plane VP1 and the second virtual plane VP2 is set to have an acute angle relationship. This ensures that the projected area of the strip plate portion 221b with respect to the surface of the mesh plate body portion 221 is sufficiently large.

  The band part 222 extends in parallel with the second bridge part 21, and is formed in a band shape having a width larger than the width and thickness of the band plate part 221b, and cuts the net part 22 vertically. In other words, the configuration of the damming net portion 20 described above is, as shown in FIG. 2 and FIG. 3, the second bridging portion 21 and the band portion 222 longitudinally crossing the damming net portion 20 are laterally spaced. Open and are arranged alternately, and a mesh plate member 221 is provided between the second bridge portion 21 and the band portion 222. The blocking net portion 20 is formed by integrally forming the second bridge portion 21, the mesh plate portion 221, and the band portion 222.

  Then, as shown by the black arrow in FIG. 2, the damming net portion 20 is stacked on the panel skeleton portion 10 and further joined to form the formwork panel 1. More specifically, as shown in FIG. 3, in the formwork panel 1, the second bridge portion 21 extends straight in a direction intersecting with the first bridge portion 12 and is bridged over the outer frame portion 11. ing. Further, the damming net portion 20 is formed by alternately arranging the second bridge portions 21 and the net portions 22 and integrally providing them. The damming net portion 20 covers one surface (the upper surface in FIGS. 2 and 3) of the outer frame portion 11 and the outer frame portion 11 is covered by the one surface (the upper surface in FIGS. 2 and 3) of the outer frame portion 11. And is joined to the first bridge portion 12. Here, the joining points are all points where the band section 222 and the outer frame section 11 of the panel skeleton section 10 and the first bridging section 12 intersect. Alternatively, it may be an appropriately selected place at all the points where the band part 222 and the outer frame part 11 of the panel skeleton part 10 intersect, and the part where the band part 222 and the first bridge part 12 are in contact with each other. Further, at the joining points, the second bridge portion 21, the mesh plate body portion 221, and the band portion 222 of the damming net portion 20, the outer frame portion 11 of the panel frame portion 10, and the first bridge portion 12 are in contact with each other. It can be appropriately set in the place. For example, the second bridging portion 21 of the damming net portion 20, the outer frame portion 11 of the panel skeleton portion 10, and the first bridging portion 12 are not joined, and the mesh plate body of the damming net portion 20 is not joined. The portions where the portion 221 and the band portion 222 are in contact with the outer frame portion 11 and the first bridging portion 12 of the panel skeleton portion 10 may be appropriately joined. The joining can be performed by welding or may be performed by adhesion.

  Here, in the joining between the damming net portion 20 and the panel skeleton portion 10 described above, a step is generated between the outer frame portion 11 and the first bridging portion 12 as described above regarding the panel skeleton portion 10. Since the structure is difficult, the mesh portion 22 and the first bridge portion 12 can be joined relatively easily. Then, as described below, in the joining of the damming net portion 20 and the panel skeleton portion 10 described above, the formwork panel 1 includes the band portion 222, and the band portion 222 joins the panel skeleton portion 10 to each other. This can be done more easily. When the contact areas of the net-like net plate portion 221 and the band-like band portion 222 with the first cross-linking portion 12 are compared, the contact area is that the band portion 222 is formed in the band-like shape, and thus the net-like net-like portion The band part 222 is wider than the plate part 221. In general, it can be considered that the larger the contact area, the easier the joining. Therefore, it can be considered that the band-shaped band portion 222 is easier to bond to the first bridge portion 12 than the net-shaped mesh plate portion 221. In the above, the object to be joined is the first bridge portion 12, but when the object to be joined is the outer frame portion 11, the contact area is similar to that of the net-like plate body portion 221 than the net-like plate portion 221. 222 is wider. Therefore, it can be considered that the band part 222 is easier than the mesh plate part 221 even in the case of joining with the outer frame part 11. As a result of the above, regardless of whether the object to be joined is the outer frame portion 11 or the first bridge portion 12, it is considered that the band portion 222 can be joined more easily than the mesh plate body portion 221. You can

  Therefore, by joining the band portion 222 and the outer frame portion 11 and the first bridging portion 12, the damming net portion 20 and the outer frame portion 11 and the first bridging portion 12 can be joined more easily. In other words, the form panel 1 can easily join the band part 222 to the outer frame part 11 and the first bridging part 12 by providing the damming net part 20 with the band part 222. Thus, the damming net portion 20 and the panel skeleton portion 10 can be easily joined. Then, the dam net 20 is reinforced by joining the dam net 20 and the panel skeleton 10 in this manner. If the damming net portion 20 is not reinforced by being joined to the panel skeleton portion 10, the damming net portion 20 is laterally moved when assembled to the form 500 as shown in FIG. It is easy to spread, and the mesh of the mesh plate portion 221 is easy to spread. On the other hand, in the formwork panel 1, the damming net portion 20 and the panel skeleton portion 10 are joined to each other and the damming net portion 20 is reinforced by the panel skeleton portion 10, so that the above-mentioned formwork 500 is laterally moved. In addition to being prevented from spreading in the direction, the mesh of the mesh plate portion 221 is prevented from spreading.

  The formwork panel 1 can be used to assemble the formwork 500 as described above with reference to FIG. More specifically, the wire 501 can be passed through the mesh plate portion 221 of the formwork panel 1, and the outer frame part 11 of the adjacent formwork panel 1 can be bound with the wire 501. Here, the mesh plate member 221 can partially open the meshed hole portion 221a and pass the wire 501 therethrough. Further, the separator 502 can be passed through the mesh of the mesh plate portion 221 so that the first cross-linking portions 12 of the mold panels 1 facing each other are held by the separator 502. As described above, by using the wire 501 and the separator 502, the mold panel 1 can be assembled to form the mold 500 as shown in FIG.

<1-2. Regarding the effect of the formwork panel 1>
The formwork panel 1 of the present embodiment having the configuration described above has the following operational effects. The form panel 1 is reinforced by the outer frame portion 11, the first bridge portion 12, and the second bridge portion 21 to ensure strength. Moreover, since the plurality of second bridge portions 21 and the net portion 22 are integrally provided, the number of parts is reduced. Therefore, the mold panel 1 can secure strength and can reduce the labor for manufacturing due to the reduced number of parts.

  Further, in the frame of the outer frame portion 11, the first bridge portion 12 is bridged between the pair of sides 11a of the outer frame portion 11 (see FIG. 3). Since the net portion 22 is joined to the first cross-linking portion 12 that is bridged in the frame of the outer frame portion 11, the net portion 22 is less likely to be uneven due to the joining to the first cross-linking portion 12. Therefore, the net portion 22 and the first bridge portion 12 can be joined relatively easily. Further, the formwork panel 1 is provided with a net portion 22, and when used as a peripheral wall of the formwork, a small amount of fresh concrete leaks from the net portion 22 so that it can be embedded in concrete. Therefore, it is not necessary to remove the formwork panel 1 after the concrete has hardened, and thus the labor of the operator can be reduced.

  The dihedral angle θ2 between the first virtual plane VP1 and the second virtual plane VP2 is set to have an acute angle relationship. Thereby, as explained below, the formwork panel 1 can dam the fresh concrete more reliably. When fresh concrete is poured into the inside of a mold 500 including the mold panel 1 as a peripheral wall, the mold panel 1 faces the fresh concrete, and is configured to dam the fresh concrete. At this time, since the mesh plate member 221 provided between the second bridge portion 21 and the band portion 222 faces the fresh concrete, the structure of the mesh plate member 221 can block the fresh concrete. Need to be configured. The mesh plate member 221 is a plate and is provided so that a plurality of holes 221a penetrating in the plate thickness direction are densely packed, and a band plate 221b is provided between two adjacent holes 221a. There is. In other words, the mesh plate body portion 221 has a plurality of holes 221a as meshes, and the strip plate portion 221b around the meshes. The strip plate portion 221b of the net plate portion 221 is configured to face the fresh concrete and dam the fresh concrete.

  The larger the projected area of the strip plate portion 221b with respect to the surface of the net-like plate portion 221 facing the fresh concrete, the larger the substantial area of the strip plate portion 221b facing the fresh concrete, so the strip plate portion 221b is more reliable. It can be considered that fresh concrete can be dammed up. Here, the surface of the mesh plate portion 221 facing the fresh concrete can be considered to be in a position parallel to the second virtual plane VP2 which is a plane parallel to the one surface of the outer frame portion. Thus, the projected area of the strip plate portion 221b with respect to the surface facing the fresh concrete is the same as the projected area of the strip plate portion 221b with respect to the second virtual plane VP2. Therefore, it can be considered that the larger the projected area of the strip plate portion 221b with respect to the second virtual plane VP2, the larger the substantial area where the strip plate portion 221b faces the fresh concrete. Further, the smaller the dihedral angle between the first virtual plane VP1 and the second virtual plane VP2, which is a plane orthogonal to the plate thickness direction of the strip plate portion 221b, the smaller the projected area of the strip plate portion 221b with respect to the second virtual plane VP2. Can be considered large.

  Here, since the dihedral angle between the first virtual plane VP1 and the second virtual plane VP2 is set in an acute angle relationship, the strip plate portion 221b can more reliably block fresh concrete, The size of the projected area of the strip plate portion 221b with respect to the second virtual plane VP2 can be secured. Then, the mesh plate body portion 221 including the strip plate portion 221b can block fresh concrete more reliably, and by extension, the formwork panel 1 can block fresh concrete more reliably.

  Further, in the formwork panel 1, the net portion 22 has a band portion 222 that extends in parallel with the second bridge portion 21 and crosses the outer frame portion 11. As a result, the net portion 22 includes the band portion 222 that can be more easily joined to the outer frame portion 11 and the bridging portion, as will be described below, and thus the labor for creating the formwork panel 1 is further increased. It can be further reduced.

  It can be considered that the contact area with the rod-shaped first cross-linking portion 12 is wider when the contacting object is a belt-shaped object than a net-shaped object. When the rod-shaped first cross-linking portion 12 is joined, the contact area of the strip-shaped object is larger than that of the mesh-shaped one, so that the joining is easier with the strip-shaped object than with the mesh-shaped object. You can think that you can. In the above, the object to be joined is the rod-shaped first bridge portion 12, but the same can be considered when the object to be joined is the frame-shaped outer frame portion 11. Therefore, since the band part 222 is formed in a band shape, it can be considered that the outer frame part 11 and the first bridging part 12 can be bonded more easily.

  Further, all the band parts 222 are joined to the outer frame part 11 and the first bridge part 12. Accordingly, the net portion 22 having the band portion 222 is more surely joined to the outer frame portion 11 and the first bridge portion 12, so that the formwork panel 1 can be reinforced more reliably.

<< 2. Embodiment 2 >>
Next, the formwork panel 2 of Embodiment 2 will be described with reference to FIGS. 8 to 13. In the formwork panel 2 of the present embodiment, those parts that have substantially the same configuration and operation as those of the formwork panel 1 of the first embodiment are designated by the same reference numerals, and description thereof is omitted. In the formwork panel 2 of the second embodiment, the panel skeleton portion 10 and the damming net portion 120 are made of iron, but may be made of a metal other than iron or a resin.

<2-1. Configuration of Formwork Panel 2 (FIGS. 8 to 13)>
The mode of the mesh plate part may be a mode in which fresh concrete can leak out slightly from the mesh plate part while damming the fresh concrete, and other than the mesh plate part 221 (see FIG. 3) of the first embodiment. It may be a mode. In the present embodiment, as an example of a mesh plate body having a mode different from that of the mesh plate body portion 221 of the first embodiment, the first mesh plate body portion 12211 and the second mesh plate body portion shown in FIGS. 12212. Further, similar to the formwork panel 1 of the first embodiment, the mesh portion 122 extends in parallel with the second bridge portion 21 and crosses the outer frame portion 11 with a band portion 1222 (FIGS. 8, 9, 11). All the band parts 1222 are joined to the outer frame part 11 and the first bridging part 12.

  Then, the net portion 122 is provided with a plurality of first hole portions 12211a penetrating in the plate thickness direction so as to be densely packed, and forms a first net plate member portion 12211 (FIG. 8, FIG. 9, FIG. 11). (Refer to FIG. 9) between the second bridging portion 21 and the band portion 1222 (see the left side of FIG. 11, see FIG. 9), and the two adjacent first hole portions 12211a have the first strip plate portion therebetween. 12211b is provided. In addition, the net portion 122 is provided with a plurality of second hole portions 12212a penetrating in the plate thickness direction so that the second hole portions 12212a form a plate, and the second net-like plate body portion 12212 (FIGS. 8, 9, and 11). (See FIG. 9) between the second bridging portion 21 and the band portion 1222 (see the right side of FIG. 11, see FIG. 9), and the two adjacent second hole portions 12212a have the second strip plate portion therebetween. 12212b is provided. Here, as shown in FIG. 11, the plurality of first strip plate portions 12211b and the plurality of second strip plate portions 12212b are symmetrically arranged about the band portion 1222. Therefore, in the following description, the first mesh plate body portion 12211 including the first hole portion 12211a will be mainly described, and the description regarding the second mesh plate body portion 12212 including the second hole portion 12212a will be omitted. . Further, since they are arranged symmetrically as described above, what is related to the first mesh plate body portion 12211, the first hole portion 12211a, and the first strip plate portion 12211b described below is that the second mesh plate portion. The same applies to the body portion 12212, the second hole portion 12212a, and the second strip plate portion 12212b.

  The first mesh plate member 12211 is created as schematically shown in FIGS. 10 to 13. That is, as shown in FIG. 10, a first plate-shaped body portion 122H11 having a plurality of first cuts 122H11a extending obliquely and arranged in parallel with each other, and extending in a direction intersecting with the first cut 122H11a, are parallel to each other. First, the plate-shaped portion 122H including the second plate-shaped body portion 122H12 provided with the plurality of second cuts 122H12a arranged in parallel is formed. As shown in FIG. 10, a band portion 122H2 is provided between the first cut 122H11a and the second cut 122H12a.

  Next, the first plate-like body portion 122H11 shown in FIG. 10 is stretched to form the first net-like plate body portion 12211 of the present embodiment. Specifically, by bending the first strip plate portion 122H11b so that the width of the plurality of first cuts 122H11a included in the first plate-shaped body portion 122H11 shown in FIG. The first mesh plate body portion 12211 is formed. Note that FIG. 11 schematically illustrates a part of the first net-like plate body portion 12211 illustrated in FIG. 8. FIG. 12 shows a first net-like plate part 122W11 in which the first net-like plate part 12211 of FIG. 11 is further stretched in the width direction. Specifically, by bending the first band plate portion 12211b so that the width of the plurality of first hole portions 12211a included in the first mesh plate body portion 12211 shown in FIG. The first mesh plate portion 122W11 shown is formed.

  In the following description, the first cut 122H11a means the first hole 12211a after being stretched from the first cut 122H11a before the first plate-shaped portion 122H11 is stretched. It may mean the cut 122H11a and the first hole 12211a. Similarly, the first hole portion 122W11a is the first hole portion 122W11a that is in a state of being excessively extended from the first hole portion 12211a of the first mesh plate body portion 12211 of the present embodiment. It may mean something. Similarly, with the first strip plate portion 122H11b, the first strip plate portion 12211b before being stretched from the first strip plate portion 122H11b before the first mesh plate body portion 12211 is stretched, It may also mean the first strip plate portion. Similarly, the first strip plate portion 122W11b is the first strip plate portion 12211b of the first mesh plate body portion 12211 of the present embodiment, which is in a state of being further stretched excessively. It may mean the plate portion 122W11b.

  Here, as shown in FIG. 10, in the first plate-shaped body portion 122H11, the first strip plate portion 122H11b, which is a portion between two adjacent first cuts 122H11a, is an elongated straight plate. It is in a state. Similar to the strip plate portion 221Hb of the first embodiment, when the first plate-shaped body portion 122H11 is stretched, the plurality of first strip plate portions 122H11b are bent, so that the plurality of first cuts 122H11a (see FIG. 10). ) Widens to become the first hole portion 12211a (see FIG. 11). Similar to the strip plate portion 221Hb of the first embodiment, the first strip plate portion 122H11b of the present embodiment has a width larger than the thickness, so that it is easy to bend in the plate thickness direction, but difficult to bend in the width direction. . Therefore, when the first plate-shaped body portion 122H11 shown in FIG. 10 is stretched, the first strip plate portion 122H11b bends and gradually rotates. The rotation of the first strip plate portion 122H11b is rotation in which the plate thickness direction faces the width direction before rotation, similarly to the strip plate portion 221Hb of the first embodiment (see FIGS. 13 and 10 to 12). .

  In FIG. 13, the first plate-shaped body portion 122H11 (see FIG. 10) in a state before being stretched, the first net-like plate body portion 12211 after being stretched (see FIG. 11), and further stretched. The cross section of the rotating first strip plate portion is shown in three of the subsequent first mesh plate portions 122W11 (see FIG. 12). That is, in FIG. 13, the cross section (see FIG. 10) of the first strip plate portion 122H11b corresponding to before stretching is shown by a solid line, and the corresponding first strip plate portion 12211b of the present embodiment after stretching. (See FIG. 11) is indicated by a phantom line, and a section (see FIG. 12) of the corresponding first strip plate portion 122W11b after further stretching is indicated by a phantom line. As the first plate-shaped body portion 122H11 (see FIG. 10) is stretched, the first strip plate portion 122H11b becomes the first strip plate portion 12211b, as shown in FIG. As the part 12211b becomes the first strip plate part 122W11b, it faces in the height direction.

  Therefore, as shown in FIGS. 10 to 13, the first mesh plate body portion (here, the first mesh plate body portion 122H11, the first mesh plate body portion 12211, the first mesh plate body portion 122W11) is used. The projected area of the first strip plate portion (here, 122H11b, 12211b, 122W11b is included) with respect to the surface of (including) is reduced as the first strip plate portion rotates. Then, the first strip plate portion bends as it rotates (see FIGS. 10 to 13), and as the first strip plate portion bends, the first strip plate portion bends. The interior angle θ1 of the portion becomes smaller (see FIGS. 10 to 12).

  Here, the internal angle θ1 of the bent portion of the first strip plate portion is an intersection point generated by extending two linear portions sandwiching the bent portion of the first strip plate portion. It is the internal angle θ1 of. In FIG. 10, since the first strip plate portion 122H11b is not bent, the internal angle θ1 of the bent portion of the first strip plate portion 122H11b can be regarded as 0. 9 and 11, the internal angle θ1 of the bent portion of the first strip plate portion 12211b is an obtuse angle, which is larger than 90 degrees and smaller than 180 degrees. On the other hand, in FIG. 12, the inner angle θ1 of the bent portion of the first strip plate portion 122W11b is an acute angle and is smaller than 90 degrees. That is, like the internal angle θ1 of the strip plate portion 221b of the first embodiment, the internal angle θ1 of the first strip plate portion 12211b of the present embodiment can be set to an obtuse angle that is larger than 90 degrees and smaller than 180 degrees. Further, the interior angle θ1 can be set to an angle smaller than 170 degrees and larger than 100 degrees. When the internal angle θ1 is smaller than 100 degrees, the plurality of first band plate portions 12211b may not sufficiently close the first mesh plate body portion 12211. If the interior angle θ1 is larger than 170 degrees, the plurality of first band plate portions 12211b may close the first mesh plate body portion 12211 too tightly.

  In the above, securing the projected area of the first strip plate portion 12211b with respect to the surface of the first mesh plate body portion 12211, which has the same meaning as fully closing the first mesh plate body portion 12211, The setting of the interior angle θ1 of the bent portion of the first strip plate portion 12211b has been described. Here, as shown in FIG. 9, the surface of the first mesh plate body portion 12211 is parallel to the above-described one surface of the outer frame portion 11 (the upper surface of the outer frame portion 11 in FIG. 9). Therefore, the plane parallel to the upper surface of the outer frame portion 11 is defined as a second virtual plane VP2 as shown in FIG. The second virtual plane VP2 is a surface that extends in the vertical direction and the horizontal direction, as shown in FIGS. 9 and 13. Since the surface of the first net-like plate body portion 12211, the upper surface of the outer frame portion 11 and the second virtual plane VP2 are in a positional relationship parallel to each other, with respect to the surface of the first net-like plate body portion 12211. The projected area of the first strip plate portion 12211b is equal to the projected area of the first strip plate portion 12211b with respect to the second virtual plane VP2.

  Further, as shown in FIGS. 13 and 9, a plane orthogonal to the plate thickness direction of the first strip plate portion 12211b is referred to as a first virtual plane VP11. In addition, in FIG. 9, the 1st virtual plane VP11 with respect to the strip board part 12211bx shown in FIG. 9 is shown as an example of the 1st virtual plane VP11. As shown in FIG. 13 and FIG. 9, the smaller the dihedral angle θ2 between the first virtual plane VP11 and the second virtual plane VP2, the first strip plate with respect to the surface of the first mesh plate body portion 12211. The projected area of the portion 12211b becomes large. Therefore, in the present embodiment, the dihedral angle θ2 between the first virtual plane VP11 and the second virtual plane VP2 is set to have an acute angle relationship. This ensures that the projected area of the first strip plate portion 12211b with respect to the surface of the first mesh plate body portion 12211 is sufficiently large.

  Although the first strip plate portion 12211b has been described above, the plurality of second strip plate portions 12212b are arranged symmetrically with the plurality of first strip plate portions 12211b around the band portion 1222 (FIG. 11). Specifically, in the plate-shaped portion 122H, the first cut 122H11a and the first strip plate portion 122H11b of the first plate-shaped body portion 122H11 are the second cut 122H12a and the second cut 122H12a of the second plate-shaped body portion 122H12. It is arranged symmetrically with the second strip plate portion 122H12b (see FIG. 10). Further, in the net portion 122, the first hole portion 12211a and the first strip plate portion 12211b of the first net-like plate body portion 12211 have the second portion of the second net-like plate body portion 12212 centered on the band portion 1222. The holes 12212a and the second strip plate 12212b are arranged symmetrically with each other (see FIG. 11).

  In addition, in the net portion 122W, the first hole portion 122W11a and the first strip plate portion 122W11b of the first net plate portion 122W11 have the second portion of the second net plate portion 122W12 centered around the band portion 122W2. The hole portion 122W12a and the second strip plate portion 122W12b are arranged symmetrically (see FIG. 12). Further, the first virtual plane VP11 (see FIGS. 9 and 13) corresponds to the first virtual plane VP12 (not shown). Therefore, the above description regarding the first strip plate portion 12211b is similarly applied to the second strip plate portion 12212b.

<2-2. Regarding the effects of the formwork panel 2>
With the above-described configuration, similarly to the first embodiment, the form panel 2 of the present embodiment can secure the strength and can reduce the labor for producing by reducing the number of parts. Further, the concrete leaks slightly from the net portion 122 and is embedded in the concrete. Therefore, it is not necessary to remove the formwork panel 2 after the concrete has hardened, and thus the labor of the operator can be reduced.

  The dihedral angle θ2 between the first virtual plane VP11 and the second virtual plane VP2 regarding the first mesh plate body 12211, and the first virtual plane VP12 and the second virtual plane VP2 regarding the second mesh plate body 12212. The dihedral angle θ2 is set to an acute angle. Therefore, also in the present embodiment, the size of the projected area of the first strip plate portion 12211b and the second strip plate portion 12212b with respect to the first virtual plane VP1 can be secured. And thereby, the net part 122 can block fresh concrete more reliably. As a result, the formwork panel 2 can dam the fresh concrete more reliably.

  Further, as a characteristic effect of the present embodiment, as described below, in the present embodiment, the band portion 1222 is configured not to be inclined with respect to the plate thickness direction, and the band portion 1222 and the panel skeleton portion 10 are formed. It is possible to reduce the labor for making because the joining is relatively easy. In the plate-shaped portion 122H in the state before being stretched shown in FIG. 10, the band portion 1222 is naturally not inclined with respect to the plate thickness direction of the plate-shaped portion 122H. In addition, as shown in FIG. 10, in the plate-shaped portion 122H in the state before being stretched, the plurality of first cuts 122H11a and the plurality of second cuts 122H12a are symmetrical about the band portion 1222. It is located in.

  Therefore, the plate-shaped portion 122H shown in FIG. 10 which is in the state before being stretched is expanded in the lateral direction (width direction), and the net portion 122 of the present embodiment shown in FIGS. 11 and 9 is used. In the process of forming, the band portion 1222 is likely to be laterally symmetrically applied with force, and the band portion 1222 of the net portion 122, which is in a state after the plate portion 122H is stretched, tends to be symmetrical. Then, in the process of making the formwork panel 2 (see FIG. 9), when the net portion 122 of the damming net portion 120 and the panel skeleton portion 10 are joined, as described above, the outer frame portion 11 and the first Including a step of joining the panel skeleton portion 10 configured to hardly cause a step between the bridge portion 12 and the band portion 1222 configured to be hard to tilt to the left and right (in the width direction). become. If the band part 1222 is inclined to the right, the band part 1222 comes into contact with the outer frame part 11 of the panel skeleton part 10 and the first bridge part 12 on the right side of the band part 1222, but on the left side. Since there is no contact, the contact area is reduced as a result. On the other hand, since the band portion 1222 of the present embodiment is configured so as not to be tilted to the left and right (in the width direction), the band portion 1222 and the band portion 1222 are joined at the joint portion between the band portion 1222 and the panel skeleton portion 10. The contact area between the outer frame portion 11 and the first bridging portion 12 of the panel skeleton portion 10 is likely to be kept large as the joining becomes relatively good. Further, as described above, all the band parts 1222 are joined to the outer frame part 11 and the first bridging part 12, but the band parts 1222 and the panel skeleton part 10 are relatively easy to join. , The effort to create can be reduced.

<< 3. Other Embodiments >>
In other embodiments described below, a portion having substantially the same configuration and operation as the formwork panel 1 described in the above-described first embodiment, and the formwork panel 1 described in the second embodiment. Portions having substantially the same configuration and action will be denoted by the same reference numerals and description thereof will be omitted, and different portions will be described in detail. As another embodiment, for example, in the formwork panel 1 of the above-described first embodiment, the net portion 22 includes the band portion 222, but the net portion 22 is formed only by the net-like plate body portion 221 that does not include the band portion 222. You may. Further, similarly, the form panel 2 of the second embodiment described above may be configured such that the net portion 122 does not include the band portion 1222.

  Further, in the first and second embodiments, the outer frame portion 11 is formed integrally by welding four iron rods at both ends. The production of the outer frame portion 11 is not limited to this. For example, one iron bar may be bent into a rectangular shape and both ends thereof may be welded, or two iron bars may be bent at a right angle and both ends thereof may be welded. . Further, in these production methods, the joining method is performed by welding, but the joining method is not limited to welding and may be, for example, adhesion. Further, the outer frame portion 11 may be integrally formed without being joined.

  Further, in the formwork panel 1 of Embodiment 1 described above, as shown in FIGS. 2 and 3, the outer frame portion 11 has a rectangular shape. However, the outer frame portion 11 may be provided with at least one pair of sides parallel to each other, and the one having the first bridging portion 12 bridged between the pair of sides is the panel skeleton portion 10, and The blocking net portion 20 including the second bridge portion 21 and the net portion 22 may cover one surface of the outer frame portion 11. In this way, the panel skeleton portion 10 and the damming net portion 20 are provided. For example, the outer frame portion 11 can be formed into a substantially L shape, a trapezoidal shape, or a parallelogram shape. Further, similarly, in the formwork panel 2 of the second embodiment, the outer frame portion 11 can be formed in a substantially L shape, a trapezoidal shape, or a parallelogram shape.

1 Formwork Panel 10 Panel Frame Part 11 Outer Frame Part 11a Side 11b Side 12 First Cross-Linking Part 20 Damming Net Part 21 Second Cross-Linking Part 22 Net Part 221 Net-like Plate Body Part 221a Hole Part 221b Strip Plate Part 222 Band portion θ1 Inner angle θ2 Dihedral angle 221H Plate-shaped body portion 221Ha Cut 221Hb Strip plate portion 221W Mesh plate portion 221Wa Hole portion 221Wb Strip plate portion 2 Forming panel 120 Damming mesh portion 122 Net portion 12211 First mesh plate Body part 12211a First hole part 12211b First band plate part 12212 Second mesh plate part 12212a Second hole part 12212b Second band plate part 1222 Band part 122H Plate part 122H11 First plate part Part 122H11a First cut 122H11b First strip part 122H12 Second plate part 122H12a Second cut 122H12b Second strip plate portion 122H2 Band portion 122W Net portion 122W11 First net plate portion 122W11a First hole 122W11b First band plate 122W12 Second net plate portion 122W12a Second hole 122W12b Second Strip plate 122W2 Band 500 Form 501 Wire 502 Separator

Claims (4)

A formwork panel used for placing concrete,
A frame-shaped outer frame portion having at least one pair of parallel sides,
At least one rod-shaped first bridge spanning between the pair of sides;
At least one second bridge portion extending straight in a direction intersecting with the first bridge portion and spanning the outer frame portion;
A plurality of net-like nets,
The second bridging portions and the net portions are alternately arranged and integrally provided to cover one surface of the outer frame portion, and to cover the outer frame portion and the first bridging portion on the one surface. Formed panels joined together. The formwork panel according to claim 1,
The said mesh part is a formwork panel which has a band part which extends in parallel with the said 2nd bridge | bridging part, and traverses the said outer frame part. The formwork panel according to claim 2,
The mesh portion is provided so that a plurality of holes penetrating in the plate thickness direction are densely provided, and includes a mesh plate body that forms a plate between the second bridge portion and the band portion,
The two adjacent hole portions are provided with a strip plate portion therebetween,
When a plane orthogonal to the plate thickness direction of the strip plate portion is a first virtual plane and a plane parallel to the one surface of the outer frame portion is a second virtual plane, the first virtual plane and the second virtual plane. A formwork panel in which the dihedral angle with the virtual plane is set to have an acute angle. The formwork panel according to claim 3,
A formwork panel in which all of the band parts are joined to the outer frame part and the first bridge part.

Images