JPS61181612A - Method of molding fiber reinforced cement product and formwork device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming fiber-reinforced cement products and a formwork apparatus.

Conventionally, when forming eaves that protrude above windows and doors of buildings using glass fiber reinforced cement, as shown in the figure, a side frame with an inclined upper surface of the opening is placed on a bottom plate Ca with one leg. ) is removably attached to formwork C(I). Then, cement mortar is sprayed into the formwork (B) from the upper surface opening to form a thin precoat layer ■ on the inner surface of the formwork 0]), as shown in Figure 2, and the inside of the formwork 01). Spray cement mortar and glass fiber on top of the pre-coat layer ■ on the bottom plate (2) to form a cement mortar/L' tar layer mixed with galanu fibers at the bottom of the formwork c31). This glass fiber mixed cement mortar has air remaining inside as bubbles! f! j (to) is rolled while pressing a defoaming roller P with a circumferential groove on its upper surface to defoam. Next, formwork 61)
Defoamed glass fiber mixed cement mortar N at the bottom of the inside
As shown in Figure 1O, a core material (7) made of polystyrene foam is placed on top of 4 (7), and the side surface of the core material (to) placed in the center of the formwork 3υ and the side surface of the formwork are Cement 7ruta fi mixed with glass fiber between the pre-coated layer ■ on the inner surface of the side frame Q
/@'! : Fill the mold using a vibrator and spray the cement mortar and glass fiber onto the glass fiber mixed cement mortar (B) filled around the core material (7) and the core material (T). 31) Form a layer of glass fiber-mixed cement mortar on the top of the opening. This glass Hta-mixed cement 7/L/M108, in which the air for spraying remains as bubbles, is degassed by rolling while pressing a defoaming roller with a circumferential groove on its inclined upper surface (end). bubbles,
As shown in Figure 1, the sloped top surface (to) is leveled using a trowel (G), and the sloped top surface (to) is leveled by sliding the trowel (A).
When the moisture content increases, leave it to dry. When the moisture on the sloped top surface (G) decreases to a certain extent, use a trowel to level the sloped top surface (T) again.
Repeat the leveling process alternately to finish the sloping top surface flat. After curing for 7 days, from the bottom plate (2) of the formwork to the side frame (
) is removed and demolded as shown in Figure 12 to obtain an eave of 0υ1 gaffs fiber-reinforced cement product.

In addition, if the upper Galanu fiber-containing cement mortar/L/N4C38 in the formwork c3η was not sufficiently defoamed, the pores of air bubbles remaining in the cement mortar layer (6) would ) may open.

In such a case, fill the opened air bubble holes with cement paste to close the holes, and after the cement paste has solidified, smooth the sloping top surface of the eaves using a sand vapor.

However, in this conventional method, the top surface of the glass fiber mixed cement mortar layer in the formwork is leveled manually using a trowel, which requires a lot of time and effort. Poor efficiency. Moreover, it is extremely difficult to finish the surface (2) into a flat surface with high flatness.

In addition, glass fiber mixed cement mortar IVWI in the formwork
Since the upper surface (2) of J@ is finished by hand using a trowel ■, a fiber-reinforced cement product with an uneven or curved surface on the upper surface of the opening of formwork C (η) is manufactured. This is extremely troubling.

The purpose of the present invention is to completely improve the conventional method which has the above-mentioned drawbacks, and to develop a molding method that can efficiently produce fiber-reinforced cement products in which the surface that becomes the upper surface of the formwork has the desired shape. It is to provide.

Another object of the present invention is to provide a molding device that can easily carry out the molding method of the present invention.

The inventor believes that the drawbacks of the conventional method are due to the manual finishing of the product surface, which is the upper surface of the opening of the mold, and that the drawbacks of the conventional method can be overcome by turning that product surface into the molding surface. With a M-eye, spray separately on the top side of the formwork opening and other areas to defoam.

The idea was to overlap and combine the parts of the painting.

That is, one aspect of the present invention is to spray cement mortar and fibers into a formwork in which a side frame is attached to a bottom plate to defoam it. Cement mortar and fibers are sprayed into the frame placed on the cover plate to defoam them, the frame on the cover plate is extracted from the fiber-containing cement mortar, and the cover plate is placed on top of the fiber-mixed cement. Turn it over with the mortar, overlap the fiber-mixed cement mortar that was placed on the lid plate on top of the fiber-mixed cement mortar in the formwork, and cover the top opening of the cover plate form.

The cover plate is tightened to the formwork, and the top opening of the formwork is closed with the cover plate, while the overlapping fiber-containing cement mortar in the formwork is compressed to remove the combined fiber-containing cement mortar in the formwork. The excess amount is flowed out from the mortar outlet provided at the top of the side frame of the formwork, and then.

This is a method for molding a fiber-reinforced cement product, which is characterized by finishing the part where excess mortar flows out of the fiber-reinforced cement product after it has been demolded and molded.

In this forming method, the cover plate placed over the top opening of the formwork is tightened to the formwork, and the superimposed fiber-mixed cement in the formwork is compressed, so the top side of the opening of the formwork The resulting product surface becomes the molding surface. Therefore, there is no need to manually finish the surface of the product using a trowel. Ota. Since the above-mentioned product surface is formed into a surface that conforms to that of the lid plate, it is easy to form a desired surface such as a highly flat surface, an uneven surface, or a curved surface.

In addition, the overlapping fiber-mixed cement mortar in the formwork is compressed with a lid plate placed over the top opening of the formwork.

Since the surplus is allowed to flow out from the n frame, there are almost no air bubbles remaining in the fiber-mixed cement mortar in the form frame, and a dense product without air bubbles can be obtained.

As a result, it is possible to efficiently manufacture a fiber-reinforced cement product in which the surface on the upper side of the opening of the formwork is the desired surface.

O.5 The present invention is such that the side frame is removably attached on the bottom plate, the side part of the cover plate is pivoted on one side of the side frame, and the cover plate is rotated on the side frame to allow the cover plate to be rotated on the side frame. The upper opening of the frame can be closed, and the cover plate can be rotated to the side of the side frame to be placed horizontally, and a frame is placed on the side of the side frame to be placed on the horizontally arranged cover plate. This formwork device for fiber-reinforced cement products is characterized in that a lid plate placed over the upper opening of the side frame can be tightened to the side frame, and a mortar outlet is provided at the upper part of the side frame.

This formwork device rotates the lid plate to the side of the side frame, sprays cement mortar and fibers into the side frame on the bottom plate, and degasses it. Place a frame on the fc cover plate, spray cement mortar and fiber into the frame to degas it, remove the frame on the cover plate from the fiber-containing cement mortar, and place it on the cover plate. The fiber-mixed cement mortar placed on the lid plate is placed on top of the fiber-mixed cement mortar in the side frame, and the fiber-mixed cement mortar placed on the lid plate is placed on top of the side frame. Cover the top opening, tighten the lid plate to the side frame, and close the top opening of the side frame with the lid plate. At the same time, press the overlapped fiber-containing cement mortar in the side frame, and tighten the lid plate to the side frame. The surplus of the combined fiber-mixed cement mortar is flowed out from the mortar outlet at the top of the side frame, and then.

The side frame can be removed from the bottom plate and demolded.

That is, one can implement the molding method of the present invention.

In particular, when the lid plate is rotated to the side of the side frame, it is placed horizontally, so it is easy to place the frame on the lid plate and spray cement mortar and fibers into the frame to defoam. It is. Also,
When the cover plate is rotated from the side position of the side frame onto the side frame, it is turned over and covers the top opening of the side frame, so the cover plate and the fiber-containing cement mortar placed on it are turned over. , the fiber-mixed cement mortar placed on the lid plate was superimposed on the fiber-mixed cement mortar in the side frame,
It is easy to cover the top opening of the side frame with the cover plate.

After all, the molding method of the present invention can be carried out easily.

Next, one embodiment of the present invention will be described.

In this example, a canopy of a glass fiber reinforced cement product is formed. As shown in Figures 1 and 2, the formwork device used in this molding method has legs (2) of equal length fixed to the μ corners of a rectangular bottom plate (1), and the bottom plate is placed horizontally. (1
) on top of μ side plates (41, (5), (61 (6
) placed in a rectangular frame shape, and a flange (7) protruding outward from the lower side of each side plate (4), (51, (6), (6)) of the side frame. Each bolt (
8) to the periphery of the bottom plate (1), and 7 in the side frame (3).
One side plate (4) is made shorter than the side plate (5) facing it, and the other two side plates (6).

(6) from the edge of the tall side plate (5) (III) to the edge of the short side plate (4),
A safety flange (9) protruding outward from the upper side of each side plate (4), (5), C6), (6) is arranged in the same inclined plane, and is placed on the bottom plate (1).

A side frame (3) with an inclined upper surface of the opening is removably attached.

One plate surface of the rectangular flat cover plate QG is formed into a molding plane αp with high flatness, and the reinforcing frame (6) is fixed to the other plate surface, and one side of the vMMoO2 reinforcing frame α3 fixed side plate surface is formed. Hands/'flEo3 are fixed to protrude from both ends of the board surface, and mounting members a4 are fixed to both ends of the other side, respectively, protruding from the side of the board surface. Upper pivot OQ of lower flange (7) of lower side plate (4)
is attached parallel to the 7 langes (7), and the protruding ends of both numbered members Q4) and (14) of the cover plate are rotatably attached to the pivot QF9, and the side of the 2M plate 00 is attached to the side frame (3). It is pivoted to the short side plate (4) inside.

As shown in Fig. 1, when the cover plate (10) is rotated to the side of the side frame (3), the one-car mounting member aa, α◆ will be attached to the short side plate (4) in the side frame (3). abuts against the lower flange (7),
It is arranged horizontally with the molding plane αD being the upper surface. Maku,
As shown in Figure 2, when the lid plate is rotated onto the side frame (3), the forming plane (11) becomes the lower surface and overlaps the upper fringes (9) around the four circumferences of the side frame (3). Then, the upper opening of the side frame (3) is closed.

As shown in Fig. 1, the frame a placed on the cover plate Q□ placed horizontally on the side of the side frame (3) is formed into a rectangular shape that is one size smaller than the cover plate 00, and has an inner dimension. is made slightly smaller than the top opening of the side frame (3).

As shown in FIG. 1, the upper flange (9) of the four circumferences of the side frame (3) is provided with a large number of wire holes aη.
When the cover plate 00, which has bolt insertion holes OQ penetrated around the mounting plate αQ at the position where it overlaps with the plate αQ, is placed over the top opening of the side frame (3), as shown in Fig. 2. , the bolt α9 is inserted into the bolt insertion hole (end) of the cover plate and screwed into the wire hole aη of the side frame to tighten the cover plate 00 to the side frame (3).

The short side plate (4) and tall side plate (5) in the side frame (3)
) - As shown in Fig. 1, the upper 7 flange (9) is formed with a plurality of grooves 4 that cross the flange (9) to form the M/L/J outlet 4? It is set up.

When carrying out the molding method of this example using the formwork apparatus of this example, as shown in FIG. and place it horizontally, then attach the bottom plate (1)
Spray cement mortar into the upper side frame (3) to form a thin precoat layer, and spray cement mortar sharp fibers onto the precoat layer on the bottom plate (1) to form the side frame (3). Glass fiber mixed cement mortar layer Q at the bottom of the inside
A force is formed, and the glass fiber-containing cement mortar layer (c), in which the air for blowing remains as bubbles, is degassed by rolling it while pressing a defoaming roller with a circumferential groove on the top surface of the cement mortar layer (c). , as shown in Figure μ.

A core material made of Styrofoam/L' (
A) is placed and the core material (A) placed in the center of the side frame (3)
Cement mortar mixed with glass fiber is put between the side surface of (a) and the pre-coated layer on the inner surface of the side frame (3) and filled using a vibrator, and the glass fiber mixed in is filled around the core material (c). cement mole) Jfi/(c) and core material (
b) Cement 7 μ and glass # on the sloping top surface! A thin glass R fiber-mixed cement mortar layer (to) is formed at a position lower than the top surface of the opening of the side frame (3) by spraying fibers.

This gaff mixed cement 7/L/layer n, in which the air for spraying remains as bubbles, is defoamed by rolling it while pressing a circumferentially grooved defoaming roller on its slanted upper surface.

On the other hand, as shown in Fig. 3, a frame (11) is placed on the forming plane αυ of the cover plate, which has electricity distributed horizontally to the side of the side frame (3), and cement is placed inside the frame (3). First, spray mortar to form a thin pre-coat layer. Next, spray cement mortar and glass fiber to form a glass fiber mixed cement mortar layer (c) as shown in the figure. This glass fiber-mixed cement mortar layer (e) remaining inside as air bubbles is degassed by rolling while pressing a degassing roller with a circumferential groove on the upper surface of the layer, and the frame a on the cover plate OQ is degassed.
* is extracted from the defoamed glass fiber-mixed cement mortar layer (through), and the glass fiber-mixed cement mortar layer C4 remains on the lid plate flG, as shown in FIG.

Next, the cover plate 0Q is rotated and turned over on the side frame (3) together with the glass fiber-mixed cement mortar layer placed thereon, as shown in FIG. Place the glass fiber mixed cement mortar layer (to) placed on the plate (IG) on the glass fiber mixed cement mortar layer e24 in the frame (3), and place the cover plate QG on the side frame (3).
), screw it into each bolt insertion hole (to) on the cover plate and each wire hole aη on the side frame, and tighten the cover plate OQ to the side frame (3). While closing the top opening of the side frame (3) with 00, press the overlapping nine glass fiber-containing cement mortar layers (to) in the side frame (3) to combine them, and The excess amount of cement mortar mixed with glass fibers is allowed to flow out from each mortar outlet (e) at the top of the side frame.

After curing for 7 days, remove each bolt (8) that tightened the side frame (3) to the floor plate (1), and remove the side frame (3) from the bottom plate (1).
The mold is removed and a glass fiber reinforced cement product 7) is obtained as shown in FIG. For this step 1), finish only the areas where extra mortar flows out using a grinder or sand vapor.

The eaves obtained by the molding method of this example are as follows.

The inclined upper surface becomes a highly flat molding plane due to the molding plane aυ of the lid plate.

Note that if the molded surface of the 2M plate is made into an uneven or curved surface, an eaves can be obtained in which the sloped upper surface is an uneven or curved surface that matches the molded surface of the lid plate.

In the above examples, glass fibers were used to mold glass fiber reinforced cement products, but Riki-Zen fibers or Steel/L' fibers were used to mold carbon fiber reinforced cement products or steel fiber reinforced cement products. Good too.

Furthermore, although the eaves were molded, fiber-reinforced cement products other than the eaves may be molded.

Furthermore, although the opening upper surface of the side frame is inclined, it does not have to be inclined. Ota. Although a core material was used, it does not have to be used.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a formwork apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view of the same formwork apparatus with a lid plate placed over a side frame. 3rd t! 21 to 7 are vertical sectional views schematically showing each step of the molding method according to the embodiment of the present invention. Fig. g to Fig. 72 are vertical sectional views schematically showing each step of the conventional method. 1: Bottom plate 3: Side frame 8: Bolt 1o: Lid Plate 14: Mounting member 15: Pivot 16: Frame 17: 4 Hole 18: Bolt insertion hole 19: Bolt 20: Mortar outflow part 24 Glass fiber mixed cell 25
: Galanu #-Fiber-mixed cement mortar layer Ment mortar layer 26: Eaves, Galanu fiber-reinforced cement product 7'8 Figure f'12

Claims (2)

[Claims] (1) Defoaming by spraying cement mortar and fibers into the formwork with side frames attached to the bottom plate, and defoaming by spraying cement mortar and fibers into the frame placed on the lid plate. , remove the frame on the cover plate from the fiber-mixed cement mortar therein, turn the cover plate over together with the fiber-mixed cement mortar placed on it, and remove the fiber-mixed cement mortar placed on the cover plate from the formwork. The lid plate is placed over the fiber-mixed cement mortar in the formwork, the lid plate is placed over the top opening of the formwork, the lid plate is tightened to the formwork, and the top opening of the formwork is closed with the lid plate. The stacked fiber-containing cement mortar is compressed, and the excess of the combined fiber-containing cement mortar in the formwork flows out from the mortar outlet provided at the top of the side frame of the formwork, and then the mold is demolded and molded. A method for forming a fiber-reinforced cement product, characterized by finishing a portion of the fiber-reinforced cement product where excess mortar has flowed out. (2) Attach the side frame removably on the bottom plate, pivot the side of the cover plate on one side of the side frame, and rotate the cover plate onto the side frame to open the top surface of the side frame. At the same time, the lid plate can be rotated to the side of the side frame and placed horizontally, and a frame is provided on the side of the side frame to be placed on the horizontally arranged lid plate. A formwork device for fiber-reinforced cement products, characterized in that a lid plate placed over an opening on the top surface can be tightened to a side frame, and a mortar outlet is provided at the top of the side frame.