JPS5811532Y2 - Formwork for concrete blocks - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a formwork for concrete blocks, particularly a formwork for concrete blocks for forming U-shaped grooves.

Generally, when forming U-shaped grooves for roads, etc., metal molds are usually used.

When forming U-shaped grooves, after filling the formwork with concrete, the mold cannot be removed unless it is cured for a certain period of time.For this reason, in order to manufacture a large number of U-shaped grooves in a short period of time, a large number of formworks are required. It becomes necessary.

However, although metal formwork is superior in terms of strength, durability, and precision, it requires a lot of work to create due to the nature of the material, and the material cost is also high, so the manufacturing cost is high and it cannot be produced in large quantities. It is economically difficult to use.

Therefore, conventionally, in order to efficiently use a small amount of mold, a method has been adopted in which the mold is cured under high temperature conditions and the curing time is shortened to shorten the usage cycle of the mold.

However, even in such a case, it is not easy to mass-produce it because fuel and equipment costs must be invested to create high-temperature conditions.

Therefore, the manufacturing cost of the U-shaped groove manufactured using such a formwork has inevitably increased.

Therefore, the main purpose of this invention is to reduce the cost of formwork, thereby making it possible to use a large amount of formwork, thereby achieving mass production and cost reduction of concrete blocks. A mesh-shaped concrete filling space is formed between a bottom mold having a chevron-shaped cross section and integrally provided with end templates at both ends, and the bottom molds pivoted to be openable and closable on both sides of the bottom mold. A side template is formed of a hard elastic synthetic resin, and the upper edge joints of the both end face templates and both side templates are each provided with a joining piece, and the adjoining joining pieces are respectively connected by a connector. The concrete block formwork is configured to be fixed, and has an appropriate number of reinforcing ribs integrally provided on the outer surfaces of the both side templates.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a formwork main body, and the formwork main body 1 forms a concrete filling space 2 in the shape of a U-shaped groove concrete block facing downward.

The concrete filling space 2 includes a bottom mold 3 having a chevron-shaped cross section, each molded from a hard elastic synthetic resin, end face mold plates 4.4 integrally molded on both end surfaces of the bottom mold 3, and a bottom mold 4.4 formed on both sides of the bottom mold 3. It is formed by both side templates 5, 5 which are pivotally supported on the edges so as to be openable and closable.

A bearing bracket 6 is integrally formed on the lower side of the bottom mold 3, and a pivot bracket 6 is integrally formed on the bottom edge of the side mold 5. 7 are pivotally supported via pins 8, so that both side mold plates 5.5 can be opened and closed with respect to the bottom mold 3, respectively.

Joining pieces 9 a and 9 b are formed at the joints between the upper edges of the end face templates 4 and the upper edges of the both side templates 5 and 5, respectively, and the joining pieces 9 a and 9 b are in contact with each other. 9b are connected and fixed by connecting tools 10, respectively.

Reference numeral 11 denotes reinforcing ribs integrally formed on the outer surfaces of the end template 4 and the side template 5.

The bottom mold 3, end mold plate 4, and side mold plate 5 mentioned above are made of hard elastic synthetic resin materials such as polycarbonate, as well as acrylic,
polyester, polyethylene, nylon, styrene,
It is made of synthetic resin material such as ABS and polypropylene.

Further, one or both of the side templates 5, 5 may be made transparent, and furthermore, only a portion of the side template 5 may be made transparent.

The formwork for concrete blocks according to the present invention is constructed as described above, and when manufacturing a U-shaped groove, the upper edge of both side templates 5, 5 is attached to the upper edge of both end templates 4, 4. are brought into contact with each other, and the joining pieces 9a and 9b that are joined to each other are connected and fixed by a connecting tool 10, respectively.

In this state, the concrete filling space 2 having a mountain-shaped cross section is filled with concrete, and the mold plates 5 and 5 on both sides of the curing solution are opened to remove the U-shaped groove.

As is clear from the above description, when forming a U-shaped groove, the concrete block formwork of the present invention pivots both side formworks to the bottom mold so that they can be opened and closed, and also supports the end face formwork and the side formwork. Since the joint piece is formed on the upper edge of the plate, and the joint pieces in contact with each other are connected and fixed by a connecting tool, both side templates can be fixed to the bottom mold with a simple operation, and the U-shaped groove can be fixed. It is possible to form a concrete filling space for the purpose of use, which greatly simplifies the formation and demolding of formwork, and since each template is made of elastic synthetic resin, it is more suitable for mass production than metal templates. , it is possible to reduce manufacturing costs.

Therefore, it is possible to supply U-shaped grooves in large quantities at low cost without requiring heating equipment or the like for manufacturing U-shaped grooves.

Furthermore, the bottom mold is formed into a dynamically stable mountain shape, and reinforcing ribs are formed on the outer surfaces of the end mold plate and side mold plate, so there is no dimensional error and high precision U
It is possible to provide a groove.

[Brief explanation of drawings]

Figure 1 is a perspective view of the formwork according to the present invention, and Figure 2 is the same I
-I line sectional view. 1...Form body, 2...Concrete filling space, 3...Bottom mold, 4...End template, 5... Side template, 9a, 9b...
Joint piece, 10... Connector, 11... Reinforcement rib.

Claims (1)

[Scope of utility model registration request] A side surface forming a mesh-shaped concrete filling space between a bottom mold having a chevron-shaped cross section and integrally equipped with end templates at both ends, and the bottom mold pivoted to be openable and closable on both sides of the bottom mold. The templates are made of hard elastic synthetic resin, and the upper edge joints of the both end templates and both side templates are each provided with a joining piece, and the adjacent joining pieces are connected and fixed by respective connectors. A formwork for a concrete block, characterized in that an appropriate number of reinforcing ribs are integrally provided on the outer surface of the both side templates.