JP2020026050A - Flask foe molding - Google Patents

Abstract

To provide a flask for molding capable of easily constructing a hardened body having a pattern formed on its surface.SOLUTION: A flask for molding of molding a hydraulic composition comprises a transfer member 11 formed with a pattern to be transferred to the surface of the hardened body 7 of the hydraulic composition. Preferably, the flask for molding includes: a dam plate 2; and a step part 6 forming a step at the dam plate 2, the transfer member 11 is arranged on the step part 6, and the transfer member 11 is fixed to the step part 6 so that it can be withdrawn from the step part 6.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a molding form for casting a hydraulic composition such as concrete, cement, mortar, or the like, and particularly to a structure for passing piping or a ventilation duct (a so-called pigeon) on the roof of a building. Hut) and a molding form preferably used for molding a substructure for machine installation.

  2. Description of the Related Art Conventionally, air conditioning equipment of a building has a number of outdoor units installed on the roof of the building, and pipes are connected between the indoor units installed in the building and the outdoor units. For this reason, a hut-like building (so-called pigeon hut) 1 is provided on the roof of the building, as shown in FIG. 1 of Patent Document 1, and the piping is passed through the side wall of the building 1. It is arranged between the indoor unit and the outdoor unit. Also, when installing a machine on the roof of a building, a substructure for installing the machine is also provided.

  Pigeon huts and substructures for installing machines (hereinafter referred to collectively as "substructures") are installed outdoors and are provided with rainwater measures to enhance durability. Specifically, in order to prevent rainwater from entering from the rising portion of the substructure to the inside, a drainage portion projecting horizontally from the substructure main body is formed at the height direction intermediate portion of the substructure. . The drain portion has a drain groove formed on the lower surface thereof, which can completely prevent water from flowing down to the rising portion of the substructure. Furthermore, by making the entering corner portion and the outgoing corner portion of the drainage portion obtuse, it is possible to suppress the occurrence of cracks and prevent rainwater from entering the drainage portion.

  When constructing a substructure having the above configuration, a formwork made of wood is provided at the installation location, and a hydraulic composition such as concrete is poured into a space surrounded by the formwork, The mold was removed after the hydraulic composition was cured.

JP-A-10-318482

  By the way, in the construction of a substructure, the work of manufacturing a wooden formwork on site requires experience and labor. In particular, when a pattern such as a drain groove is formed on the surface of the substructure, the forming work of the mold has been more complicated. In addition, since the removed formwork is difficult to reuse and is thrown away, it has been a problem from the viewpoint of environmental protection.

Therefore, an object of the present invention is to provide a molding mold capable of easily constructing a cured product of a hydraulic composition having a pattern formed on the surface.

  In order to achieve the above object, a molding form as one embodiment of the present invention is for molding a hydraulic composition, and a pattern to be transferred to a surface of a cured body of the hydraulic composition is formed. It has a transfer member.

  The transfer member may be formed of a fiber-reinforced plastic containing a reinforcing fiber and a synthetic resin.

Further, the molding form includes a weir plate and a step portion that forms a step in the weir plate, and the transfer member is disposed on the step portion, and the transfer member is, with respect to the step portion, It may be configured to be detachably fixed from the step portion.
The molding form may include a reinforcing portion for reinforcing the dam plate, and the dam plate and the reinforcing portion may be integrally formed of a fiber-reinforced plastic containing a reinforcing fiber and a synthetic resin. .

  Further, the weir plate includes a molding portion that contacts the hydraulic composition, and connection portions that are formed on the left and right sides of the molding portion and abut on adjacent molding forms, and are formed on the left and right sides of the molding portion. At least one of the connection portions may be formed to have a tapered surface inclined with respect to the molding portion.

  According to the above aspect, since the molding mold of the present invention has the transfer member on which the pattern to be transferred to the surface of the cured product of the hydraulic composition is formed, the transfer member is set on the molding mold. It is possible to easily mold a cured body having a pattern formed on the surface.

The front side perspective view showing the embodiment of the mold for molding of the present invention. Rear perspective view of the molding frame of FIG. The perspective view which shows the substructure formed using the molding die of this invention. FIG. 2 is a perspective view showing a state in which a transfer member is mounted on the molding frame of the present invention. A partially enlarged view of the AA cross section of FIG. The figure which shows another aspect of the drainage groove part of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a mold for forming a substructure for machine installation will be described as an example. FIG. 1 is a front perspective view of the molding die of the present embodiment, and FIG. 2 is a rear perspective view of the molding die of the present embodiment.

  As shown in the drawing, the molding form of the present embodiment includes a form body 1 and a transfer member 11. The formwork body 1 includes a weir plate 2 and a reinforcing part 3 for reinforcing the weir plate 2. The weir plate 2 and the reinforcing portion 3 are integrally formed of a fiber reinforced plastic (hereinafter, referred to as FRP) containing a reinforcing fiber and a synthetic resin. In order to form the weir plate 2 and the reinforcing portion 3 integrally, for example, an FRP composition containing a reinforcing fiber and a synthetic resin is introduced into a molding die of the mold body 1 and press-molded. And the reinforcement part 3 can be integrally molded.

  The formwork main body 1 integrally forms the dam plate 2 and the reinforcing portion 3 by FRP. Thus, the form body 1 has high strength while being lighter in weight than the wooden form. Therefore, the assembling work of the molding frame on site is facilitated, and the labor can be reduced. In addition, it is possible to suppress breakage of the mold when peeling the mold from the cured product of the hydraulic composition such as concrete or mortar, thereby enabling the mold to be reused. .

  When molding FRP, it is preferable that the FRP composition has fluidity sufficient to reach every corner of the mold during molding. Therefore, the reinforcing fibers preferably include short fibers. Here, the short fibers preferably have an average fiber length of 3 mm to 15 mm.

  Glass fibers can be used as the reinforcing fibers, and synthetic resin fibers can also be used. In particular, carbon fiber reinforced plastics using carbon fibers (hereinafter referred to as CFRP) have an advantage that they are superior in strength to other fibers, for example, FRP using glass fibers. And unsaturated polyester resins and epoxy resins, but are not limited thereto.

  The reinforcing portion 3 is formed on the surface of the weir plate 2 opposite to the surface in contact with the hydraulic composition. The reinforcing portion 3 is composed of reinforcing ribs formed in a vertical and horizontal lattice. Thereby, the mold body 1 has sufficient strength while being lightweight.

  The weir plate 2 includes a molded part 4 that is in contact with the hydraulic composition, and connection parts 5 and 5 that are formed on both left and right sides of the molded part 4 and that abut on the adjacent form body 1. A stepped portion 6 is formed in the molded portion 4. The connecting portion 5 has a tapered surface inclined with respect to the molded portion 4. In the present embodiment, the angle formed between the molded portion 4 and the tapered surface of the connection portion 5 is formed to be 135 ° when the form body 1 is viewed in plan.

  FIG. 3 is a perspective view showing the substructure 7. As shown in FIGS. 1 and 3, the substructure 7 has a substantially rectangular shape in plan view, and can be formed as a so-called protruded corner portion by projecting four corners by using the form body 1. If the mold bodies 1 are formed so as to be at an angle of 45 ° when viewed from the top, they can also be formed as a substructure 7 having a corner.

  Thereby, when the adjacent mold bodies 1, 1 are connected by the connecting part 5, the angle formed by the adjacent molding parts 4, 4 becomes 90 ° when the mold body 1 is viewed in plan. As described above, by adopting an aspect in which the connecting portion 5 has a tapered surface inclined with respect to the forming portion 4, when connecting the mold bodies 1, 1 provided with the stepped portions 6 to each other, the adjacent forming portions 5 are formed. There is no gap between the mold and the mold, and the connection can be performed smoothly.

  The mold body 1 can be connected to a molding mold having no stepped portion 6. In this case, the connecting portion 5 of the mold body 1 is formed as a surface orthogonal to the molding portion 4 and the orthogonal surfaces are brought into contact with each other and connected, that is, at least two mold bodies in the X direction of FIG. It can also be suitably implemented in a mode in which 1, 1 are connected in parallel. Further, it is also possible to connect the connecting portion 5 by bringing the connecting portion 5 into contact with a molding portion of a molding form having no step portion 6.

  As a method of connecting the connection parts 5, 5, any known connection method can be used without any limitation. In the present embodiment, a plurality of bolt holes (not shown) are formed in the connection portion 5, and the connection portions 5, 5 are connected to each other using bolts and nuts as fastening means (not shown).

  In order to construct the substructure 7 for installing a machine using the formwork body 1 having the above-described configuration, as shown in FIG. To connect the adjacent connecting portions 5 to each other. The substructure 7 can be constructed by injecting the hydraulic composition into the space surrounded by the mold body 1, and after the hydraulic composition has hardened, removing the molding mold.

  The crosspiece S is made of a wooden timber, and the both ends of the crosspiece S and the connecting portion 5 of the formwork body 1 are further connected so that the inner surface of the crosspiece S and the surface of the forming portion 4 of the formwork body 1 are flush with each other. It is formed to be flush. That is, both ends of the crosspiece S are inclined at 135 ° in a C shape in plan view. A frame is formed by connecting both ends of the crosspiece S to each other. As shown in FIG. 1 and FIG. 2, the width of the bottom surface of the mold body 1 (the length in the radial direction from the center of the space surrounded by the four mold bodies 1) is wide at two places on both right and left ends. The wide portions are fixed portions 1a, 1a. The fixing parts 1a, 1a are fixed on the crosspiece S by screws or the like. As described above, the crosspiece S has both a function as a part of the form body 1 and a function as a spacer.

  Here, the function as the spacer means that, when the cured body obtained by curing the hydraulic composition is released from the mold, as described later, a gap (space) for pushing down the mold body 1 downward. Refers to the function to secure. The spacer also has a function of firstly setting the crosspiece S at a predetermined position and then fixing the formwork body 1 to an upper portion thereof when the formwork body 1 is installed.

  As shown in FIG. 3, the substructure 7 has a shape in which a lower rectangular parallelepiped portion 8 and an upper rectangular parallelepiped portion 9 are integrally formed, and the upper rectangular parallelepiped portion 9 has a larger diameter than the lower rectangular parallelepiped portion 8. It is formed. As a result, the horizontal rim of the upper rectangular parallelepiped portion 9 projects in the horizontal direction more than the lower rectangular parallelepiped portion 8, and the lower surface of the extended portion serves as the drain portion 10.

  The molding form has a transfer member 11. The transfer member 11 has a pattern to be transferred to the surface of the cured body of the hydraulic composition, and is arranged on the step 6 of the dam plate 1. Specifically, the transfer member 11 includes a substrate portion 11a and a transfer portion 11b in which a transfer pattern is formed three-dimensionally on the substrate portion 11a. The board portion 11a is formed in a thin plate shape, and the step portion 6 is formed with a fitting groove 6a into which the board portion 11a can be fitted.

  In the transfer member 11, the transfer portion 11b protrudes from the surface of the step portion 6 to form a ridge in a state where the substrate portion 11a is fitted in the fitting groove 6a. The transfer member 11 is detachably fixed to the step portion 6. In the present embodiment, the space between the transfer portion 11b and the substrate portion 11a is made hollow, but solid molding can be performed without distinction between the substrate portion 11a and the transfer portion 11b.

  Further, the surface of the step portion 6 may be a smooth surface, and the transfer member 11 may be fixed thereon. In this case, the substrate portion 11a may be formed in the same shape as the step portion 6 in plan view, and the transfer member may be provided so that the entire surface of the step portion 6 is covered by the substrate portion 11a.

  In the molded part 4, an inclined part 4a is formed at the corner formed by the step part 6. As shown in FIG. 5, the inclined portion 4 a is provided for forming the chamfered portion 12 at the corner of the draining portion 10. The transfer section 11b is provided for forming a drain groove 13 that blocks water from flowing down from the drain section 10 to the lower rectangular parallelepiped section 8. As the transfer member 11 in the present embodiment, a synthetic resin such as polypropylene or silicone can be used. Further, the transfer member 11 can be made of FRP.

  Further, as another form of the drain groove 13, as shown in FIG. 6, a groove with a step 13a can be used. With such a groove having a step 13a, it is possible to more reliably prevent water from flowing down from the drainer 10 to the lower rectangular parallelepiped portion 8. In order to make the shape of the drain groove 13 a stepped groove, the shape of the transfer portion 11b of the transfer member 11 may be a stepped convex shape.

  As described above, according to the present invention, it is possible to greatly reduce the labor required for forming a pattern on a molding mold on site. Further, since the transfer member 11 is detachably fixed to the mold body 1, when the mold body 1 is removed from the cured body of the hydraulic composition, the transfer member 11 and the mold body 1 are separated from each other. The transfer member 11 can be separated, the damage of the transfer member 11 can be suppressed, and the transfer member 11 can be reused.

  The transfer member 11 is fixed to each of the steps 6 of the four mold bodies 1, and the drain groove 13 is formed over the entire circumference of the substructure 7. Accordingly, it is possible to prevent rainwater from being transmitted to the rising portion of the substructure 7 where rainwater easily enters. In addition, the chamfered portion 12 suppresses the occurrence of breakage and cracks at the portion by obtuse the corners of the draining portion 10 and prevents rainwater from entering from the cracks to the inside of the substructure. Deterioration of the structure 7 can be suppressed.

  In order to detachably fix the transfer member 11 to the step portion 6, for example, an adhesive can be applied to the back surface of the transfer member 11. Accordingly, when the hydraulic composition is filled in the molding frame, the state in which the transfer member 11 is placed on the step portion 6 can be maintained. On the other hand, when removing the formwork main body 1 from the substructure 7, the crosspieces S and the crosspiece S and the formwork main body 1 are separated from each other, and the crosspiece S is moved to the center of the substructure 7. And pull it out of the way. Thereafter, the grip body 1 is detached from the substructure 7 by grasping the handle portion 1b provided continuously to the reinforcing portion 3 of the mold body 1 and pushing down the mold body 1.

  The method for detachably fixing the transfer member 11 to the step portion 6 is not limited to a method using an adhesive, but may be a known method. For example, a screw hole is formed on the back surface of the transfer member 11, a through hole is provided in a step portion 6 corresponding to the screw hole, and a screw is screwed into the screw hole from the back surface side of the step portion 6. Can be fixed to the step portion 6. In this case, after the hydraulic composition is cured, the transfer member 11 can be easily removed from the mold body 1 by removing the screw from the screw hole.

  In the above-described embodiment, the aspect in which the substructure 7 is molded using four molding molds having the same shape has been described. However, the scope of the present invention is not limited thereto, and does not depart from the gist of the invention. Various changes can be made within the scope of the present invention. For example, the length of the form body 1 in the width direction X is the same for all four, but the length of the pair of form bodies 1 facing each other is the same, and the length of the adjacent form bodies 1 is You may make it different.

  Further, it is not always necessary to form the step portion 6 in the mold body 1, and the transfer member may be fixed to the molding portion 4. When the forming mold is small, the reinforcing ribs may be formed in a frame shape on the outer peripheral edge of the weir plate instead of the grid-like reinforcing ribs.

  Further, in the above embodiment, the mold and the transfer member are made of FRP, but both or one of them may be made of wood. Furthermore, in the above-described embodiment, the crosspiece has been described as being distinguished from the forming mold. However, the present invention is not limited to this, and it is also possible to view the crosspiece as the lower mold and the mold body as the upper mold. In particular, in the above embodiment, the crosspiece is made of wood, but it may be made of FRP, and this enables the molding frame including the crosspiece to be reused.

  In the above embodiment, the case where short fibers are used as the reinforcing fibers used in the FRP has been described. However, in addition to the short fibers, a woven fabric or a nonwoven fabric can also be used as a base material. In this case, the reinforcing portion 3 may be made of only short fibers as the reinforcing fibers, and the dam plate 2 may be made of a combination of short fibers and a woven or nonwoven fabric as the reinforcing fibers. Thereby, the strength of the weir plate 2 can be further increased, and the form body 1 can be reduced in weight. Furthermore, it is also possible to use only a woven or nonwoven fabric as the reinforcing fiber.

  The components disclosed in the present embodiment and the above-described modification can be combined with each other, and a new technical feature can be formed by combining the components.

DESCRIPTION OF SYMBOLS 1 Form body 2 Dam board 3 Reinforcement part 4 Molding part 5 Connection part 6 Step part 7 Substructure 8 Lower rectangular parallelepiped part 9 Upper rectangular parallelepiped part 10 Drain part 11 Transfer member 12 Chamfer part 13 Drain groove X Width direction

Claims (5)

What is claimed is: 1. A molding mold for molding a hydraulic composition, comprising a transfer member on which a pattern to be transferred onto the surface of a cured product of the hydraulic composition is formed. The mold according to claim 1, wherein the transfer member is formed of a fiber-reinforced plastic containing a reinforcing fiber and a synthetic resin. The molding frame includes a weir plate, and a step portion that forms a step in the weir plate, and the transfer member is disposed on the step portion, and the transfer member is provided with the step portion with respect to the step portion. The molding formwork according to claim 1, wherein the molding formwork is fixed so as to be detachable from the portion. The molding form includes a reinforcing portion for reinforcing the dam plate, and the dam plate and the reinforcing portion are integrally formed of a fiber-reinforced plastic containing a reinforcing fiber and a synthetic resin. Forming mold. The weir plate includes a molding portion in contact with the hydraulic composition, and connection portions formed on left and right sides of the molding portion and abutting on adjacent molding forms, and formed on both left and right sides of the molding portion. The molding die according to any one of claims 1 to 4, wherein at least one of the connection portions has a tapered surface inclined with respect to the molding portion.

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