JPS6210354Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is a lightweight composite hollow mold made of synthetic plastic material used in the production of ribbed concrete floors and ceilings, known as watsufuru or trough floors. Regarding.

BACKGROUND OF THE INVENTION Traditionally, molds used to manufacture ribbed concrete floors and ceilings, known as watsufuru or trough floors, have been made of wood or metal.

(Problems that the invention aims to solve) However, such conventional molds are not only heavy and difficult to move, but also have a fixed length, so one mold can be used to create any length. It was difficult to obtain things.

Therefore, an object of the present invention is to provide a composite mold that is lightweight, movable, and capable of forming floors and ceilings of arbitrary length.

(Means for Solving the Problems) The above object is to connect at least two end units used as essential units among the constituent units and each adjacent unit, and to connect the number of end units that is one less than the number of the units. In a composite type of synthetic plastic material used in the manufacture of ribbed concrete floors, each end unit has a generally rectangular, flat top and continuous connections to the opposite ends of the top. two side walls extending outwardly from the flat portion; and a rear wall portion continuously connected to the rear edge of the top portion and extending outwardly from the top portion; an opening in the front edge; a flange having a substantially rectangular cross section protruding inwardly from the front edge of the top and the front edge of the inclined side wall, which is also provided around the opening; and the side wall and the rear It has an overturning box-like structure consisting of a shelf extending outward from the bottom edge of the wall and formed around the end unit from three directions, and the supporting connection member includes a vertical support plate. The flanges projecting downwardly of adjacent units are enclosed in a groove provided along the top edge of the support plate, and the height of the support plate is somewhat higher than the inner height of the mold. Achieved by a composite mold made of synthetic plastic used for the manufacture of ribbed concrete floors, characterized in that it is low and the length of its base is the same as the length between the bases of the side walls. be done.

(Function) The composite mold according to the present invention is necessary for forming two end unit structures (hereinafter referred to as end units) forming a substantially square mold, or an elongated mold having a desired length. It consists of two end units with one or more intermediate units inserted between said two end units. The composite type of the present invention uses a connecting member to firmly join adjacent units to form a single structure. Each end unit that makes up the composite mold has an approximately inverted box shape, with an approximately rectangular and flat top and side walls that connect to both ends of the top and extend outward from there. and a rear wall portion connected to the rear edge of the top portion and extending outwardly from the rear wall portion. The top of the box-shaped box facing the front opening end is provided with a flange having a substantially rectangular cross section and projecting downward at right angles to the top, and the flange may optionally be extended to the side wall. You can also do it. The free lower edges of the side walls and the rear wall are formed with outwardly extending ledges which surround the mold as reinforcement and support for the mold.

Each optional intermediate unit is in the form of an inverted channel, with a rectangular, flat top having a width of the same dimensions as the top of the end unit, and a slope and length similar to that of the end unit and side walls. It is composed of a side wall portion having a diameter. Projecting from the free edge of the flat top are flanges of approximately rectangular cross section, these flanges being dimensioned to correspond to the flanges of the end units. A shelf corresponding to the shelf of the end unit is also formed at the lower edge of each side wall of the intermediate unit.

The vertical plate-shaped support connection member connects the adjacent downwardly extending flanges of the two units to a longitudinally extending member formed between two rows of staggered ears projecting upwardly and outwardly from the top edge of the vertical plate. It is used to connect two units by enclosing it in a groove, the height of this connecting member is somewhat lower than the internal height of the mold itself, and the length of the top of this connecting member is Although the length of the bottom is somewhat shorter than the length of the flange, the length of the bottom is somewhat longer than the length between the lower ends of both side walls of the mold, so that the end of the connecting member can be supported as a foot frame.

In a preferred embodiment of the composite mold according to the present invention, the above-mentioned connecting member has parallel upper and lower sides, the upper side is shorter and has a groove for receiving two adjacent flanges, and both ends of the lower side are connected to the adjacent mold units. It is composed of a trapezoidal member having upper and lower sides that engage with grooves formed in the adjacent shelf on the opening side.

(Example) The present invention will be described in more detail in light of the example of the accompanying drawings.

The end unit structure shown in FIGS. 1, 4 to 6 (hereinafter referred to as the end unit) has a rectangular flat top 1, two slanted side walls 2, 2', and one slanted back wall. The horizontal shelf part 4 is composed of a wall part 3 and a horizontal shelf part 4 that surrounds the mold from three sides.
It extends outward from the lower edges of 2' and 3. This shelf 4 is made relatively high so as to provide resistance to high moments, and is hollow with grooves 5 formed in its bottom surface to save material and reduce weight. A downwardly protruding flange 6 having a rectangular cross section is formed at the front end of the unit and the opening, and is used for connection with an adjacent mold unit. The front bottom corner of the flange 6 is tongue and grooved in the form of a rectangular recess 7 to aid in connection with adjacent units as previously described. Reinforcing ribs 8 are provided along the inside and side walls of the flat top 1 to reduce the weight of the unit without weakening its resistance to external pressure.

The channel-shaped unit provided in the middle shown in FIGS. 2 and 6 has a rectangular flat top 11 and two side walls 12, 12' extending downwardly from both ends of the top. The front and rear parts are open. The two shelves 14, 14' extend along the side walls 12, 12' and are provided with grooves in their bottom surfaces, similar to the shelves 4 of the end unit. The open end of this channel-shaped unit is surrounded by downwardly projecting flanges 16, 16' which correspond to the flange 6 of the end unit. The bottom corner of the flange 16 is tongue and grooved into a rectangular recess 17 similar to the recess 7 of the end unit. Furthermore, reinforcing ribs 18 are provided on the side walls and the top.

Adjacent mold units as shown in FIGS. 3 to 6 have multiple square and triangular perforations 22 to save material and reduce weight.
It is generally connected and supported by a connecting member of a trapezoidal body 21. The trapezoidal body 21 has a lower straight beam 23 and an upper straight beam 25.
It is installed in between and integrally with it. The lower beam 23 has a rectangular cross section and is provided with laterally projecting ears 24, 24' which engage recesses 7 and 17 in the end and intermediate units, respectively. On the other hand, a rectangular groove 26 extending in the longitudinal direction is provided on the upper surface of the upper beam 25, and the width of this groove is equal to the width of the fifth groove.
Either inserted into this groove 26 for connecting two end units as shown in the figure or for connecting several intermediate units with end units as shown in FIG. It is slightly wider than the sum of the widths of the two flanges 6 and 16. The groove 26 also has two rows of staggered ears 28 that protrude upward from the upper beam 25.
However, the ears 28 in each row are separated by a space 27 that is somewhat wider than the width of the ears in the opposing row.

Although a variety of materials may be used in the manufacture of units of the type described above, thermoplastic resins such as polypropylene, polyethylene, and high density polyethylene are preferred. Further, as a manufacturing method for these units, conventional methods such as injection molding, rotational molding, and structural form vacuum forming can be used.

As described above, the present invention includes at least two end units used as essential units among the constituent units, and a supporting connection member that connects each adjacent unit and is one less than the number of the units. In a composite mold made of synthetic plastic material used in the manufacture of ribbed concrete floors, each end unit has a generally rectangular, flat top and is connected continuously to both ends of the top to form the flat two side walls extending at an angle outward from the top; a rear wall continuously connected to the rear edge of the top and extending at an angle outward from the top; an opening, a flange of approximately rectangular cross section protruding inwardly from the front edge of the top and the front edge of the sloping side wall, which is also provided around the opening, and the bottom of the side wall and the rear wall; It is an inverted box-like structure consisting of a shelf extending outward from the edge and formed around the end unit from three directions, and the supporting connection member is formed of a vertical support plate, Both downwardly projecting flanges of adjacent units are enclosed in a groove provided along the top edge of the support plate, and the height of the support plate is somewhat lower than the inner height of the mold and the bottom thereof It is a composite type made of synthetic plastic used in the manufacture of ribbed concrete floors, characterized in that the length is the same as the length between the bottoms of the side walls, so it is extremely lightweight. and
Moreover, since the structure is simple, it is easy to assemble and move. Therefore, it can be transported to the required location and molded into the desired ceiling material or floor material. Another advantage is that by inserting and connecting the necessary number of intermediate units between the end units of the composite type, a ceiling material or floor material of any length can be formed.
Therefore, it is possible to solve the conventional problem of having to store the number of molds for a desired ceiling material depending on the shape or size of the floor material.

[Brief explanation of the drawing]

Fig. 1 is an isometric perspective view of the end unit constituting the composite mold of the present invention, Fig. 2 is an isometric perspective view of the intermediate unit constituting the composite mold of the present invention, and Fig. 3 is an etc. of the support joint member. 4 is a perspective view of the supporting member of FIG. 3 applied to the end unit of FIG. 1 before connection with an adjacent unit, and FIG. 5 is a square-shaped end unit composed of two end units. A sectional view of the mold, and FIG. 6 is a sectional view of a mold constructed by connecting a plurality of units. 1... Top of the end unit, 2, 2'... Side wall of the end unit, 3... Rear wall of the end unit, 4... Shelf of the end unit, 5... Shelf 4 Groove, 6... Flange of end unit, 8, 18...
... Reinforcement rib, 11 ... Top of intermediate unit, 1
2, 12'...Side wall portion of intermediate unit, 14, 1
4...Shelf portion of the intermediate unit, 16, 16...Flange of the intermediate unit, 21...Trapezoidal body of the connecting member, 22...Perforation of the connecting member, 23, 25...Beam, 28...Ear portion.

Claims (1)

[Claims for Utility Model Registration] At least two end units used as essential units among the constituent units, and support connecting members connecting each adjacent unit and having a number one less than the number of said units. in a composite mold of synthetic plastic material used in the manufacture of ribbed concrete floors, each end unit having a generally rectangular flat top;
two side walls that are continuously connected to both ends of the top and extend outwardly from the flat portion; and two sidewalls that are continuously connected to the rear edge of the top and slope outward from the top. a rear wall portion that is distracted by the opening of the front edge portion;
A flange having a substantially rectangular cross section protruding inward from the front edge of the top portion and the front edge of the sloping side wall portion, which is also provided around the open portion, and a flange having a substantially rectangular cross section protruding inward from the front edge of the top portion and the front edge of the inclined side wall portion; It has an overturning box-like structure consisting of a shelf that protrudes and extends from three directions and is formed around the end unit, and the support connection member is formed of a vertical support plate, and the support connection member is formed of a vertical support plate, and the end unit is Both flanges projecting downward are enclosed in a groove provided along the top edge of the support plate, the height of the support plate is somewhat lower than the inner height of the mold, and the length of the bottom thereof is The length is the same as the length between the bottoms of the side wall. A composite mold made of synthetic plastic used in the production of ribbed concrete floors.