JP2022163786A - Instant demolding flask - Google Patents

Abstract

To provide an instant demolding flask capable of producing a concrete block free from the falling of connecting fittings when large-sized concrete blocks are connected.SOLUTION: In an instant demolding flask 10, connecting fittings 30 forming a U shape by connecting plates 32A drilled with through holes 33 and two anchor parts 35 raised from the connecting plates 32A are buried in a state where a first opening face 33A of the through holes 33 is exposed in the circumferential center part of the body part formed by concrete C to produce a concrete block 100 formed with recessed parts 110 in a prescribed range at the side of a second face 33b of the through holes 33. The flask comprises: a lower die 12 having a mounting face 12A and a side circumferential face 12B standing on the mounting face 12A; a projecting part 20 erected on the mounting face 12a and formed to have an outer wide dimension more than the same dimension as the inner width dimensions of each anchor part 35; and each plate body 22 erected on the mounting face 12A and performing positioning in the height direction of each anchor part 35.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a quick release formwork, and more particularly to a quick release formwork suitable for use in manufacturing concrete blocks with embedded connectors.

Concrete blocks, so-called covering blocks, are used for slope protection work such as retaining walls. As disclosed in Patent Document 1 (Utility Model Registration No. 3210025), some of such concrete blocks have connectors attached to corners when viewed from above. In the concrete block disclosed in Patent Document 1, when connecting the connecting devices adjacent to each other at each corner, a connecting means separate from the concrete block is used, so that the concrete blocks are closely attached to each other. It is difficult to lay it in a state where it is That is, there is a problem that although concrete blocks can be connected to each other, a plurality of concrete blocks cannot be integrated.

Therefore, as disclosed in Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-201700), by arranging a connector on the contact surface of the concrete block adjacent to each other for the concrete block in Patent Document 1, It was thought that the above problems had been solved by making it possible to integrate adjacent concrete blocks.

Utility Model Registration No. 3210025 Japanese Patent Application Laid-Open No. 2002-201700

In recent years, with the decrease in the number of workers in the construction industry and the aging of workers, there has been a remarkable movement to improve construction efficiency by increasing the size of concrete blocks for covering. When the concrete blocks are enlarged in this way, the fastening force of the fasteners attached to the connecting fittings also increases. Therefore, if the adhesion length between the connecting metal fittings and the concrete is insufficient, there is a problem that the connecting metal fittings fall off from the concrete blocks when connecting large concrete blocks. Furthermore, as in the configuration disclosed in Patent Document 2, when a concrete block is manufactured in a state in which the connector is simply placed on a part of the concrete formwork (the convex portion for forming the concave portion), When the formwork is filled with concrete, the mounting position of the connector is displaced. As a result, the connector is inclined with respect to the outer surface of the concrete block, and there is also a problem that the concrete blocks cannot be connected to each other.

Therefore, in the present invention, even when connecting large concrete blocks, it is possible to manufacture a concrete block that can be reliably connected to each other without the connecting fittings falling off. The purpose is to provide immediate stripping formwork.

That is, according to the present invention, a connector having a U-shape in a plan view formed by a connecting plate having a through hole and at least two anchor portions standing from the connecting plate is formed on the outer peripheral surface of a main body made of concrete. At least one surface of the through hole is embedded in a circumferentially central portion in such a manner that the first opening surface of the through hole is exposed, and a recess is formed in a required range on the side of the second opening surface of the through hole. a frame body having a concrete placement surface and side peripheral surfaces standing along the outer circumference of the placement surface; a convex portion erected and formed to have an outer width dimension equal to or greater than the inner width dimension of the anchor portion within a range that can be clamped by the inner wall surface of the anchor portion; and a positioning member for positioning the portion in the height direction.

Further, the connector having a U-shape in plan view by a connecting plate having a through hole and at least two anchor portions standing from the connecting plate is formed of concrete on at least the outer peripheral surface of the main body. A concrete block embedded in a circumferential central portion of one surface with the first opening surface of the through hole exposed, and a recess formed in a required range on the side of the second opening surface of the through hole. wherein the concrete mounting surface, a required position on the top surface of the mounting surface, and a retracted position outside the required position on the top surface. and an upper mold that moves into and out of contact with the lower mold. and a positioning member for positioning the anchor portion in the height direction. It is also possible to adopt a configuration that

As a result, even when large-sized concrete blocks are connected to each other, it is possible to obtain concrete blocks that can be reliably connected to each other without the connecting fittings falling off.

Moreover, it is preferable that the positioning member is a plate.

This makes it possible to improve the appearance of the covering block after demolding.

According to the structure of the quick release formwork of the present invention, even when connecting large concrete blocks, the connecting metal fittings do not fall off, and the concrete blocks can be reliably connected to each other. You can get blocks.

It is a perspective view which shows the whole structure of the immediate removal formwork in 1st Embodiment. FIG. 2 is a plan view of a frame in FIG. 1; It is a top view which shows the state which mounted|wore the frame with the connection tool. FIG. 3 is a perspective view showing an example of a concrete block manufacturing process using the immediate demolding formwork in the first embodiment. FIG. 3 is a perspective view of a concrete block manufactured with the instant stripping formwork in this embodiment. It is a perspective view which shows the whole structure of the immediate removal formwork in 2nd Embodiment. FIG. 10 is a perspective view showing an example of a concrete block manufacturing process using the immediate demolding formwork in the second embodiment. FIG. 8 is a perspective view showing a continuation of FIG. 7;

A specific configuration of the immediate stripping formwork 10 according to the present invention will be described below based on an embodiment.

(First embodiment)
As shown in FIGS. 1 and 2, the immediate demolding formwork 10 in this embodiment is paired with a lower mold 12 as a frame body for accommodating concrete C supplied from a concrete supply unit (not shown). An eggplant upper mold 14 is provided.

The lower mold 12 as a frame has a placement surface 12A on which the concrete C is placed and a side peripheral surface 12B that rises along the outer peripheral edge of the placement surface 12A. forming Although the placement surface 12A in this embodiment has a square shape in plan view, it is not limited to this shape. On a pair of outer peripheral edges (outer peripheral edges in the lateral direction here) of the outer peripheral edges of the mounting surface 12A, convex portions 20 are erected at positions spaced apart from the outer peripheral edges in the central portion in the circumferential direction. . Further, two plates 22 serving as positioning members are erected in an inner region of the mounting surface 12A further than the convex portion 20. As shown in FIG. The projecting portion 20 is for forming a recessed portion 110 at a required position of a concrete block 100 (main body portion formed of concrete C), which will be described later.

As shown in FIG. 3 , a connector 30 can be attached to the protrusion 20 . The connector 30 has a sheet metal portion 32 and an anchor portion 35 . The sheet metal portion 32 has a connecting plate 32A which is formed on a flat surface and has a through hole 33 and a bent portion 32B formed by bending both ends of the connecting plate 32A and bending the connecting plate 32A. formed in the shape of A deformed reinforcing bar 34 is attached to the outer surface of the bent portion 32B. In this embodiment, the bent portion 32B and the deformed reinforcing bar 34 constitute the anchor portion 35 . The anchor part 35 is embedded inside the concrete block 100 and serves as a retainer for the connector 30 when the concrete blocks 100 are connected to each other.

The outer width dimension of the convex portion 20 is formed to be equal to or larger than the inner width dimension of the bent portion 32B of the sheet metal portion 32 . The upper limit of the outer width is that the anchor portions 35 can be separated from each other so that the sheet metal portion 32 can be attached to the convex portion 20 in an elastically deformed state, and the convex portion 20 can be attached to the convex portion 20 when the immediate removal formwork 10 is demolded. is a range in which it is possible to connect the connector 30 from In addition, one or a plurality of projecting portions (not shown) may be provided on the outer surface of the convex portion 20 that contacts the bent portion 32B so that the contact with the bent portion 32B is a point contact. By providing such a projecting portion, it is possible to enhance the detachability of the connector 30 from the projecting portion 20 at the time of demolding.

The anchor portions 35 extend in the direction perpendicular to the drilling surface of the through hole 33 of the sheet metal portion 32, and the separation distance between the anchor portions 35 gradually widens as the anchor portions 35 move away from the drilling surface. The state is advantageous in that the anchor effect can be enhanced. Therefore, the planar shape of the projection 20 can also be formed into a trapezoidal shape in which the width dimension inside the lower die 12 is wider than the width dimension on the side peripheral surface 12B side of the lower die 12 . The connector 30 attached to the convex portion 20 in this manner exposes the first opening surface 33A of the through hole 33 to the outer peripheral surface of the concrete block 100 (body portion) described later.

A plate 22 as a positioning member for positioning the deformed reinforcing bar 34 in the height direction of the concrete block 100 is for supporting the deformed reinforcing bar 34 of the connector 30 attached to the convex portion 20 . They are erected on the mounting surface 12A at intersecting plane positions. The height of the plate 22 can hold the lower surface of the deformed reinforcing bar 34 extending from the connector 30 attached to the projection 20, and the deformed reinforcing bar 34 is buried inside the concrete block 100 after demolding. state can be made. Further, a holding recess (not shown) can be provided in at least one place on the upper surface of the plate 22 . By arranging such a holding concave portion, it is possible to prevent the connector 30 attached to the convex portion 20 from falling off when the concrete C is put into the lower mold 12, and the deformed reinforcing bar 34 can be attached to the concrete block 100. can be embedded in a suitable internal location of the

Further, a rotation mechanism connecting portion 40 is attached to one of the lateral side peripheral surfaces 12B of the lower die 12 in this embodiment. Prior to demolding the immediate demolding formwork 10, the rotating mechanism connecting portion 40 is connected to a rotating mechanism (not shown) to turn the instant demolding formwork 10 upside down after filling with concrete. In the present embodiment, the rotation mechanism connecting portion 40 is composed of two parallel cylinders attached to the outer peripheral surface of the lower mold 12 on the short side, but it is not limited to this form. Further, the arrangement of the rotation mechanism connecting portion 40 can be omitted.

A handle portion 50 is attached to each corner portion of the lower mold 12 . A contact/separation movement mechanism (not shown) used when pulling up the lower mold 12 at the time of demolding is connected to the handle portion 50 . In this embodiment, the handle portions 50 are arranged at all the corners of the lower mold 12, but the handle portions 50 are arranged at the corners located on one diagonal line when the lower mold 12 is viewed from above. It is also possible to adopt the form provided. Also, the arrangement of the handle portion 50 can be omitted.

Next, a method for manufacturing a concrete block 100 using the immediate demolding formwork 10 in this embodiment will be described with reference to FIG. As shown in FIG. 4A, the lower mold 12 is set at a position where concrete C is supplied from a concrete supply unit (not shown). In this embodiment, the lower mold 12 is set at a predetermined position by pushing the lower mold 12 horizontally from the standby position by a pusher (not shown). Next, as shown in FIG. 4B, the connector 30 is attached to the projection 20 of the lower mold 12 . The attachment of the connector 30 to the projection 20 can be performed manually or by a manipulator or the like (not shown). Next, as shown in FIG. 4C, concrete C is supplied to the lower mold 12 from a concrete supply unit (not shown). Concrete C supplied to the lower mold 12 fills the lower mold 12 directly or by vibrating the lower mold 12 with a vibrator (not shown).

Next, as shown in FIG. 4D, the upper die 14 covers the opening surface (upper surface) of the lower die 12 by a contact/separation mechanism (not shown). Next, as shown in FIG. 4(E), a rotation mechanism (not shown) is connected to the rotation mechanism connecting portion 40, and the lower mold 12 and the upper mold 14 are rotated in an integrated state so that they are turned upside down. . Next, as shown in FIG. 4F, a lifting mechanism (not shown) is connected to the handle portion 50 of the lower mold 12 to lift the lower mold 12 away from the upper mold 14 . The concrete block 100 thus formed is discharged from the top of the upper mold 14 to a predetermined discharge position by a discharge mechanism (not shown). The upper die 14 from which the concrete block 100 has been ejected is delivered to a predetermined standby position by a manipulator (not shown). By repeatedly executing the above processes, continuous concrete blocks 100 are manufactured using the immediate demolding formwork 10 according to the present embodiment.

The concrete block 100 formed in this way has a rectangular parallelepiped shape as shown in FIG. A recess 110 is formed in the inner area portion of the tool 30 . The narrow holes formed at the positions of the plate bodies 22 can be filled with the filling concrete 120 as required. More specifically, only the connecting plate 32A in which the through hole 33 of the connecting tool 30 is drilled is exposed from the concrete block 100, and the first opening surface 33A (connecting surface) of the through hole 33 is the outer peripheral surface of the concrete block 100. They are flush with each other. A recess 110 is formed in a required range of the through hole 33 on the side of the second opening surface 33B. Although the main surface of the concrete block 100 of the present embodiment (the surface on which the recessed portion 110 is formed) is not patterned, the surface of the upper die 14 that abuts the concrete is appropriately uneven. Thus, the main plane of the concrete block 100 can be patterned.

(Second embodiment)
Next, the immediate demolding formwork 10 in the second embodiment will be described with reference to FIG. In addition, in this embodiment, the same reference numerals as in the first embodiment are used for configurations similar to those in the first embodiment, and detailed description thereof is omitted here. In the instant stripping formwork 10 in this embodiment, the mounting surface 12A and the side peripheral surface 12B of the lower mold 12 are formed separately, and the upper mold 14 has the projections 20 and the positioning members. It differs from the configuration of the immediate demolding formwork 10 in the first embodiment in that a plate 22 is provided.

The side peripheral surface 12B is erected at a portion inside the outer peripheral edge of the mounting surface 12A, and is moved to a position where the side peripheral surface 12B is erected by a side peripheral surface moving mechanism (not shown) (required position on the top surface of the mounting surface 12A). ) and the retracted position of the side peripheral surface 12B, which is located further outward than this. Further, in the instant stripping formwork 10 in this embodiment, the planar dimensions of the upper mold 14 are smaller than the planar dimensions of the lower mold 12 . The upper mold 14 is moved between the upper position of the lower mold 12 and the inner space of the lower mold 12 along the inner wall surface of the side peripheral surface 12B from the opening formed in the lower mold 12 by a contact/separation mechanism (not shown). is movable. Further, on the surface of the upper mold 14 on the side of the lower mold 12, a plate 22 as a positioning member for positioning the height position of the convex portion 20 for holding the connector 30 and the deformed reinforcing bar 34 is arranged. is set. The specific shapes of the convex portion 20 and the plate 22 can be the same as in the first embodiment.

Next, a method for manufacturing a concrete block 100 using the immediate demolding formwork 10 in this embodiment will be described with reference to FIGS. 7 and 8. FIG. As shown in FIG. 7A, the lower die 12 is formed by erecting the side peripheral surface 12B at a required position on the mounting surface 12A. Next, as shown in FIG. 7B, concrete C is supplied to the lower mold 12 from a concrete supply unit (not shown). Next, as shown in FIG. 7(C), the upper mold 14 with the connector 30 attached to the projection 20 is moved into the lower mold 12 from the opening surface of the lower mold 12, and vibration is applied to the lower mold 12. While compressing the concrete C, the connector 30 is positioned at the required height position of the lower mold 12. - 特許庁Next, as shown in FIG. 8A, the upper mold 14 is separated from the lower mold 12. Then, as shown in FIG. The connector 30 attached to the convex portion 20 of the upper mold 14 is separated from the convex portion 20 when the vibration is applied, and is buried in the concrete C of the lower mold 12 .

Next, as shown in FIG. 8B, the side peripheral surface 12B of the lower mold 12 is retracted to the standby position, and the concrete block 100 on the mounting surface 12A is sent out to a predetermined ejection position by a pusher (not shown). After the concrete block 100 is ejected from the mounting surface 12A, the side peripheral surface 12B is returned to the required position on the mounting surface 12A, and the process of returning to the state shown in FIG. 7A is performed. Concrete block 100 can be manufactured continuously.

Although the instant stripping formwork 10 according to the present invention has been described in detail above, the technical scope of the present invention is not limited to the above embodiments. For example, in the above embodiment, the concrete block 100 has a rectangular shape in plan view, but is not limited to this planar shape. It can also be formed in a triangular shape in plan view, a pentagonal shape in plan view, or a polygonal shape larger than that. That is, it is sufficient that the immediate demolding formwork 10 has three or more side peripheral surfaces 12B.

Further, in the above embodiment, the form in which the anchor portion 35 is configured by the bent portion 32B of the connector 30 and the deformed reinforcing bar 34 is exemplified. A form in which the anchor portion 35 is made up of only the reinforcing bar 34 can also be adopted. Moreover, it is also possible to adopt a form in which another shaft member is attached to the bent portion 32B as a part of the anchor portion 35 instead of the deformed reinforcing bar 34. As shown in FIG. Alternatively, the anchor portion 35 can be configured by only a portion of the bent portion 32B.

In addition, in the above-described embodiment, the form in which the connector 30 is embedded only in the lateral direction outer peripheral surface of the concrete block 100 having a rectangular shape in plan view is exemplified, but the connector 30 is embedded in the entire outer peripheral surface. A form can also be adopted.

In addition, in the second embodiment, the side peripheral surface 12B moves horizontally between the required position on the upper surface of the mounting surface 12A and the retracted position, but the configuration is limited to this. is not. An insertion hole through which the side peripheral surface 12B can advance and retreat is formed at a required plane position of the mounting surface 12A, and the side peripheral surface 12B projects from the lower side of the insertion hole or the middle position of the insertion hole to the upper surface of the mounting surface 12A. A form can also be adopted.

Furthermore, it is also possible to employ a form in which modifications described in the specification and other known configurations are appropriately combined with the configuration of the present embodiment described above.

REFERENCE SIGNS LIST 10 Immediate demolding formwork 12 Lower mold 12A Placement surface 12B Side peripheral surface 14 Upper mold 20 Convex portion 22 Plate body (positioning member)
30 connecting tool 32 sheet metal part 32A connecting plate 32B bending part 33 through hole 33A first opening surface (connecting surface)
33B Second opening face 34 Deformed reinforcing bar 35 Anchor part 40 Rotation mechanism connection part 50 Handle part 100 Concrete block 110 Recess 120 Filling concrete C Concrete

Claims (3)

At least one of the outer peripheral surfaces of the main body is made of concrete, and a connector having a U-shape in a plan view is formed by a connecting plate having a through hole and at least two anchor portions standing from the connecting plate. Manufacture a concrete block in which a recess is formed in a required range on the side of the second opening surface of the through hole, and the first opening surface of the through hole is embedded in the central portion in the circumferential direction of An immediate stripping formwork for
a frame having a concrete mounting surface and side peripheral surfaces standing along the outer periphery of the concrete mounting surface;
a convex portion erected on the mounting surface and formed to have an outer width equal to or greater than the inner width of the anchor within a range that can be clamped by the inner wall surface of the anchor;
a positioning member erected on the mounting surface for positioning the anchor portion in a height direction;
Immediate stripping formwork characterized by having. At least one of the outer peripheral surfaces of the main body is made of concrete, and a connector having a U-shape in a plan view is formed by a connecting plate having a through hole and at least two anchor portions standing from the connecting plate. Manufacture a concrete block in which a recess is formed in a required range on the side of the second opening surface of the through hole, and the first opening surface of the through hole is embedded in the central portion in the circumferential direction of An immediate stripping formwork for
a lower mold having at least three side peripheral surfaces that move in and out between the concrete mounting surface, a required position on the upper surface of the mounting surface, and a retracted position that is a position outside the required position on the upper surface; an upper mold that moves in contact with and separates from the lower mold,
The upper die is provided with a protruding portion erected on the surface on the side of the lower die and formed to have an outer width dimension equal to or greater than the inner width dimension of the anchor portion within a range where it can be clamped by the inner wall surface of the anchor portion. and a positioning member for positioning the anchor portion in the height direction. 3. The immediate stripping formwork according to claim 1, wherein said positioning member is a plate.

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