JPS589724B2 - Method and device for forming reinforced cement thin plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for forming a reinforced cement thin plate, and more particularly to a method and apparatus for forming a reinforced cement thin plate using short fibers such as glass fibers as a reinforcing material.

Conventionally, to form reinforced cement thin plates, mortar and reinforcing fibers cut into short fibers were sprayed into a picture-shaped formwork using separate sprayers, and after the spraying, they were leveled with rollers and the above process was repeated. The conventional method was to stack the layers until they reached a predetermined thickness.

However, in the above method, each sheet is molded one by one, which results in a lack of work efficiency and makes it impossible to produce large quantities.In addition, the mortar and reinforcing fibers are mixed unevenly, resulting in uneven strength. It had problems such as:

Therefore, the present invention was made to solve the drawbacks and inconveniences of the conventional method as described above. A thin plate forming part is formed between the flat plates by joining and tightening them in a shape,
On the other hand, short fibers of reinforcing fibers are sprayed onto the mortar flowing out from the outlet of the hopper onto the guide plate, and vibration is applied to create a uniformly mixed fiber mortar. This is a method for forming a reinforced cement thin plate by pouring it in small quantities into the molding section by moving the cement, and hardening it. A plurality of forming molds made by attaching flat plates to the side surfaces of a thin frame body formed in the shape of a sun and having engagement protrusions on both sides of the upper end are vertically suspended. , a frame supporting a hopper is mounted so as to be movable, an adjustment plate is attached to the outlet of the hopper to adjust the opening degree of the outlet, and a vibrating guide plate is placed below the outlet and tilted downward on the frame. The main idea is that the fiber spraying device is installed on a pedestal with the fiber spraying device facing the guide plate.

In the molding method according to the present invention, the mortar from the hopper flows out to a guide plate that guides it into the mold, and reinforcing fibers cut into short fibers are sprayed onto the mortar, and the guide plate is vibrated to keep the reinforcing fibers mixed. A thin plate is formed by making the hopper uniform and reciprocating the hopper and guide plate together, and pouring it little by little into a set of molds made up of a thin frame with a sun-shaped cross section and a mold attached to one side of the frame. It is.

In the method of the present invention, the amount of mortar flowing out from the hopper onto the guide plate is controlled by operating the adjustment plate attached to the outlet of the hopper to adjust the opening degree of the outlet. The blending ratio with the reinforcing fibers sprayed into the mortar can be optimized, and since the reinforcing fibers are mixed in after coming out of the hopper, the reinforcing fibers are mixed into the mortar in the hopper in advance and flowed out from the outlet. Problems such as poor mortar flow that occur when using this method can definitely be resolved.

Hereinafter, one embodiment of the molding apparatus according to the present invention will be described based on the drawings, and reference numerals 1 and 1' refer to guides 1 and 1' installed parallel to the upper ends of the columns 3 set up on the base 2 at a predetermined interval. H-shaped chains or the like are used as the guide rails 1, 1'.

On the left and right guide rails 1 and 1', a set mold A', which is made by joining and tightening a plurality of molds A composed of a thin frame body 4 and a flat plate attached to the side surfaces in a parallel manner, is vertically suspended. A pedestal 6 is movably mounted, and is equipped with a hopper 7, a guide plate 8, and a fiber sprayer 9.

The mold A is a thin plate having a thickness corresponding to the thickness of the thin plate to be molded (for example, 10 ln to 12 mm) and formed into a sun-shaped cross section, and engaging protrusions 4' are provided on both sides of the upper end in the outer horizontal direction. a thin frame body 4 formed protruding from the thin frame body 4;
It consists of a thin plate (approximately 6 mm) flat plate 5 fixedly attached to one side of the plate, and the area to which the plate 5 is attached is about 3/4 of the way from the lower end to the upper end.

In addition, on the upper sides of the thin frame 4, through holes 11 are provided through which bolts 10' of bolts and nuts 10 for joining and tightening a plurality of molds A in parallel are inserted. In constructing A', the thin frames 4 and flat plates 5 in the mold A are joined so as to be alternately positioned, thereby creating a molded part corresponding to the thickness of the thin frame 4 between the flat plates 5. a is formed.

In addition, if the thin plate to be obtained requires holes for attaching bolts, nuts, screws, etc., holes are made in the flat plate 5, rods such as bolts are inserted, mortar is poured in, and the holes are allowed to harden. If so, it is possible to form a thin plate with holes.

Furthermore, when tightening a plurality of molds A, it goes without saying that in addition to tightening the upper part with the bolts and nuts 10, the lower part and sides should also be tightened to prevent mortar from leaking outside.

The pedestal 6 uses shaped steel and a flat plate to connect the left and right guide rails 1, 1.
A roller 11 is attached to the inside of the left and right side plates 6' to rotate in contact with the guide rails 1, 1', and the pedestal 6 runs along the guide rails 1, 1'. I'm starting to get it.

The mounting form of the roller 11 is the guide rail 1 shown in the figure.
, 1', as well as a form in which the so-called rails that are in contact with both the upper and lower surfaces of the guide rails 1, 1' are clamped by rollers from above and below, etc., may be used.
Further, the power source for driving the frame 6 may be not only manual but also electrically powered using a motor or the like.

A hopper 7 is mounted and held on the pedestal 6 with its outlet 7' facing downward, and an adjustment plate 12 is attached to the outlet 7' to adjust the opening amount of the outlet 7'. , hopper
7, the amount of mortar b flowing out can be adjusted as appropriate.

A guide plate 8 is installed below the hopper 7 in a downwardly inclined manner, with its upper end located directly below the outlet 7' of the hopper 7, and its lower end located above the upper opening of the aggregate mold A'.

Further, on the upper surface of the guide plate 8, protrusions 13 are formed to protrude in parallel at appropriate intervals in a direction perpendicular to the direction in which the mortar flows down, and such guide plate 8 is moved in the same direction as the direction in which the mortar flows down by an appropriate vibration device. It is designed to vibrate back and forth.

Reference numeral 9 is a fiber spraying machine, and a reinforcing fiber 1 such as glass fiber cut into short fibers is applied to the mortar b that has flowed onto the guide plate 8.
4 is sprayed.

Therefore, the mortar b on which the reinforcing fibers 14 have been sprayed flows out from the outlet of the hopper 7 onto the guide plate 8 and flows downward along the slope of the guide plate 8, but the guide plate 8 vibrates in the front and rear directions. At the same time, since the protrusions 13 are provided on the guide plate 8, the reinforcing fibers 14 are kneaded into the mortar b so that they are uniformly mixed therein and poured into the forming part a of the aggregate mold A'.

The mortar, in which the reinforcing fibers 14 and the mortar b are evenly mixed on the guide plate 8, is poured into the molding part a little by little by the reciprocating movement of the pedestal 6, and this operation is repeated several times to reach a predetermined height. The mortar is poured.

After pouring a predetermined amount of mortar b into the molding part a of the mold 8 as described above, it is left to harden at room temperature. After hardening, the bolts, nuts 10 and other fasteners are removed and the respective molds are finished. By separating into type A, a desired thin plate can be obtained.

As described in detail above, the molding method of the present invention consists of a plurality of molds each having a flat plate attached to one side of a thin frame having a cross-sectional shape of square square, joined and tightened in parallel, and a thin plate formed between the flat plates. On the other hand, short fibers of reinforcing fibers are sprayed onto the mortar flowing out from the outlet of the hopper onto the guide plate.
The fiber-filled mortar is made into a uniformly mixed state by applying vibrations, and the fiber-filled mortar is poured little by little into the molded area by reciprocating the hopper and guide plate, and is hardened. It is possible to provide a method that can efficiently form a reinforced cement thin plate with uniform strength and uniform fiber blending.

The molding device has a mold suspended and supported on the left and right guide rails, and a frame equipped with a hopper, a guide plate, and a fiber sprayer is movably mounted on the guide rails. Therefore, the reinforcing fibers can be uniformly blended with the mortar and poured into the mold, and the mold can be molded very efficiently by pouring the mortar while moving the frame.

Moreover, since an adjustment plate is attached to the outlet of the hopper to variably adjust the opening amount, it is possible to variably adjust the blending ratio with reinforcing fibers to the optimum state, making it possible to form a stable reinforced cement thin plate. It is something.

[Brief explanation of the drawing]

The drawings show an embodiment of the apparatus according to the molding method of the present invention,
FIG. 1 is a side view with a portion cut away. FIG. 2 is a front view of the same, with a part cut away. FIG. 3 is a perspective view of the mold. In the figure, A: Molding mold, A': Gathering mold, 1.1': Guide rail, 4: Thin frame, 5: Flat plate, 6: Frame, 7: Hopper, 8: Guide plate, 9: Fiber sprayer , 12: Adjustment plate, a
: Molded part, b: Mortar. -20-

Claims (1)

[Scope of Claims] 1. A plurality of molds each having a flat plate attached to one side of a thin frame having a cross-sectional shape are joined and tightened in parallel to form a thin plate molded portion between the flat plates. On the other hand, short reinforcing fibers are sprayed onto the mortar flowing out from the outlet of the hopper onto the guide plate, and vibration is applied to create a uniformly mixed fiber-filled mortar. A method for forming a reinforced cement thin plate, characterized in that the reinforced cement thin plate is formed by reciprocating the cement and pouring it into the molding section in small quantities and hardening the cement thin plate. 2. A flat plate is attached to one side of a thin frame having an L-shape and engaging protrusions on both sides of the upper end, spanning the left and right guide rails installed in parallel at a predetermined interval. A collective mold made by joining and tightening a plurality of molds in parallel is suspended vertically, and a frame supporting a hopper is mounted so as to be movable, and the opening degree of the outlet is adjusted at the outlet of the hopper. A reinforced cement characterized in that a vibrating guide plate is installed below the outlet in a downwardly sloping manner on a pedestal, and a fiber spray device is attached to the pedestal so as to face the guide plate. Thin plate forming equipment.