JPS58201605A - Continuous manufacture of trough type glass fiber reinforced cement board - 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 continuously manufacturing trough-shaped glass fiber reinforced cement boards, which are used particularly for building materials such as interior and exterior wall materials.

Conventionally, this type of trough-shaped glass fiber reinforced cement board (GR
The production of C-plates was carried out using the Nosetchi method, in which GRC material was poured into a rough-shaped formwork.

However, the above-mentioned /match method requires a long time to work, has low productivity, and has the disadvantage that it is difficult to continuously manufacture high-quality products.

This invention solves the above-mentioned conventional drawbacks and provides a trough-type GR.
It is an object of the present invention to provide a continuous manufacturing method for trough-shaped GRC plates that can continuously manufacture C plates in a short period of time, increase productivity, and provide high-quality products.

The present invention will be described with reference to embodiments shown in the drawings. 1st
In the figure, A is a conveyor consisting of an endless bell) 1 mounted on a pair of front and rear pulleys 2.2, and an appropriate drive device f.
li (not shown) allows the vehicle to travel at a constant speed in the direction of the arrow. As shown in FIG. 4, the endless (ru) 1 has a recess 1II3°3' formed on both sides along the longitudinal direction of the surface, and rising portions on both sides of the belt outside the recessed groove 3.3'. 3m and 3m' are formed in the recessed groove 3.3', and a support plate 5.5' fixed to the fixed frame 4 has its surface covered with a belt, excluding the front end twill, as described later. 6 is an air blower provided on the rear end of the conveyor A for blowing air onto the belt 1 to clean it.

B is a sheet input device, 7 is a sheet made of paper, resin, glass cloth, cloth, etc., and this sheet is pulled out by a pull-out roller 8.
, 8' (on the root 1 and the support plate 5.5'. This is called the & layer.

C is a long glass Si fiber feeding device, 10 is a mesh made of long glass fibers with approximately 101,111 pitches, and this mesh ring is connected to a pull-out roller 11. II' is placed on top of the 8 layers. This is called the b layer.

D is a short glass fiber feeding device; 13 is a cart that reciprocates in the width direction of the conveyor A along a rail 14 provided above the conveyor A; a rolling cutter 16 is attached to this cart so as to be adjustable in the vertical direction; It is being Reference numeral 16 denotes a glass fiber roving, and this a-t puffer 16 is cut into short pieces by a cutter 15 and sprayed onto layer B as short fibers 16'. This is called the 0 layer.

E is a cement mortar charging device containing ultra-fast hardening cement, which sends ordinary cement mortar mixed in a mixer 21 to a pump 22, and the mortar charging device 22 adjusts the discharge amount to a desired amount with a variable speed motor 23 to feed the mortar. Dispense a fixed amount.

On the other hand, ultra-fast hardening cement and water are mixed in a tank 24 and sent to a metering pump 25, adjusted to an arbitrary discharge amount with a adjusting knob 26 fitted to the pump 25, and discharged in a stationary manner. A hardening accelerator (setter) for adjusting the hardening time of the ultra-fast hardening cement is mixed with water in a tank 27 and sent to a metering pump 28, and the pump 28 is adjusted to an arbitrary discharge rate with an adjustment knob 29 and discharged at a constant rate. The regular cement mortar, ultra-fast hardening cement, and setter that have been discharged in fixed amounts are mixed and stirred in a mixer 30 to produce mortar containing ultra-fast hardening cement.

This mortar 31 is carried by a cart 3 that reciprocates in the width direction of the hood 47^ along a rail 32 provided above the conveyor A.
3 is placed on top of the 0 layer. A mortar injection hose 34 is attached to the above-mentioned truck so as to be adjustable in the vertical direction. A thickness adjusting device 35 is provided immediately after the mortar injection point, whereby the thickness of the mortar 31 is kept constant to form the deposited layer d. The lower vibrating body 36 is located below the bell) 1 facing the adjustment device @95.
is provided, and the mortar 31 penetrates into the glass fiber B layer and O layer on the belt due to its vibration, and the B layer and O layer form the lower layer of the GRC.

When the mortar 31 placed on the conveyor A is poorly hardened and soft, the hardening state can be improved by increasing the amount of ultra-fast hardening cement discharged using the adjustment knob 26 of the pump 25. Further, when the curing start time is early, the curing time can be lengthened by increasing the discharge amount of the setter using the adjustment knob 29 of the piston 28. In this way, manufacturing can be carried out while freely adjusting the hardening state and hardening start time of the mortar 31 using the adjustment knobs 26 and 29 of the stationary pump.

On the other hand, ultra-fast hardening cement, setter and water are mixed in the tank 24 and sent to the metering pump 25.
is adjusted to an arbitrary discharge amount with the adjustment knob 26 to achieve a constant discharge, and is mixed and stirred with the normal cement mortar discharged in a constant quantity from the pump 22 in the mixer 30 to form an ultra-fast hardening cement mortar 31. The mortar 31 is charged onto the container (A1) using the charging bag #E, and is adjusted by the adjustment knob 26 of the metering pump 25 depending on the hardening state of the mortar 31 and the hardening time.

However, the best combination of ultra-fast hardening cement and setter in the tank 24 is determined through experiments, and the curing state and curing time are slightly adjusted using the adjustment knob 26. In this case, there is also a method of manufacturing without using the setter tank 27 and metering pump 2B.

In this way, each material of the ultra-fast hardening cement mortar is adjusted separately and mixed together before use, which eliminates wasted stock. Thickness can be easily adjusted by feeding in the direction.

F is a device similar to C, 38 is a mesh of approximately 101111 pitches made of glass length PR#, and the dough is placed on layer d by pull-out rollers 39, 39'. This is called a layer.

G is the same device as D, and 40 is a cart that reciprocates along the rail 41 in the width direction of the container 4A, similar to the carts 13 and 33. On this cart 40, a rolling cutter 42 is installed up and down, . It is installed so that it can be adjusted in any direction. 43 is a glass fiber glue roving, and this roving 43 is connected to the cutter 42.
The fibers are cut into short lengths and sprayed into six layers as short fibers 43'. This is called the f layer. The laminate stacked as described above is then moved to an upper vibrating body 46 provided on the upper side of the belt 1.
．． 46' vibration causes the mortar 31 to break down into the glass fibers J
Le, penetrates into the f layer, forms the upper layer ■ with this layer and the f layer, and adheres to the lower layer ■ so as to sandwich an intermediate layer made of a mixture of ordinary cement mortar and ultra-fast hardening cement. . Further, a lower vibrating body 4 is provided on the lower side of the belt 1 facing the upper vibrating body 46, 46', and vibrates so that the mortar 31 further penetrates into the lower and upper layers of glass fibers. It is designed to give. The upper surface of the upper layer (3) is further finished by a finishing plate 49 that is supported by a fixed beam 48 and can freely rotate and move up and down.
A flat laminate of the desired thickness as shown in FIG. 4 is formed.

Reference numeral H denotes a laminate forming device, and as shown in Fig. 2.3, this device is used to form a laminate on the front edge of the grooves 3 and 3' and the support plate 5.5 loosely fitted into the grooves 3 and 3'. It is comprised of taper IW11sI, 51' formed in a downward slope. During molding, the flat laminate that is guided by the rising parts 3m and 3m' over the bell) 1 and the support plate 5.5' is directed directly to the position where the tenoso parts 51 and 51' are formed. It is only necessary to advance the laminate so that its sides are aligned with the grooves 3.
While contacting the inner surface of 3', the concave groove 3 gradually forms due to its own weight.
, 3', and as shown in Figure 3.5, it bends slightly inward at point A as shown in the figure. This bend gradually becomes larger as it descends from the 8th section 151.51', and the 8th section 51.51'.
When it has finished descending, it is further bent outward through the bottom corners of the grooves 3, 3', and at point B, the whole is formed into an inverted trough shape as shown in the figure. During the above-mentioned forming, the laminate is finished by a finishing roller 52 disposed close to the root surface when the surface of the intermediate portion is located between the teeth 79 and 151. Finishing rollers ms and ss' are disposed within the side grooves 3 and 3' and close to the bottom surface of the groove, and the outer surfaces of both sides are further disposed close to the inner surface of the groove. Finishing roller 84.
54', the surface finishing is performed sequentially. This laminate is then introduced into the steam curing chamber I and cured.
The cured laminate is sent out onto the feed rollers 5 and 57' while separating from the belt 1, and is cut to a constant width by a longitudinal cutter 58 provided on the feed roller, and then cut to a constant length by a width direction cutter B9. A GRC plate of a fixed size can be obtained by cutting the belt 1 to a fixed size.
60, the deposits are removed, washed with washing water jetted from the water washing device r#61, and dried with dry air blown from the air blower 62.

FIG. 7 is an enlarged cross-sectional view of a general GRC board of a couple trough manufactured according to the present invention, and shows an upper layer 1 made of long and short glass fibers, an intermediate layer 1 made of a mixture of ordinary cement mortar and ultra-fast hardening cement, and glass It consists of three layers, including a lower layer I made of long and short fibers, of which the upper and lower layers 1. I forms a glass fiber reinforced layer in which the mixed mortar of intermediate layer 1 permeates through vibration.The content of glass fiber in ordinary cement is 1 from mechanical properties and formability.
A range of 10 to 10% by weight is preferred. Long glass fibers are woven,
It is a net-like material of approximately 101,111 pitches made of knitted fabric, and is tightly bonded with the mixed mortar layer 1 and short glass fibers to greatly increase the tensile strength and bending strength. The content of ultra-fast hardening cement in the mixed mortar layer is 5 to 50% compared to ordinary cement.
The weight range, preferably 10 to 40 weight range, is suitable from the viewpoint of fluidity and hardenability.In addition, the GRC board produced above has 7 flange parts at both ends cut off before the final product is completed, and the lower layer 1 is cut off before the final product is completed. It goes without saying that the sheet 7 placed underneath is covered with a 1iII111 layer. 8 to 10 show various types of GRC plates obtained by slightly changing the design of the molding apparatus H, and all of them show an inverted state immediately after manufacture.

FIG. 6 shows another embodiment of the support plate, this support plate 5!1.5
5' is a protrusion 56.56' which is approximately the same height as the rising portions 3m, 3m' of the belt 1 on the side of the rising portions 3m, 3m'. By using the support plates 155 and 55', the height of both side walls of the top type GRC plate can be formed to an arbitrary height.

In the above example, the laminate was composed of an upper layer I made of long and short glass fibers, an intermediate layer made of a mixture of ordinary cement mortar and ultra-fast hardening cement, and a lower layer made of long and short glass fibers. However, the present invention is not limited to this, and either the upper or lower layer may be omitted, and in the above embodiment, the finishing roller! 52, 53.53' and 5
Although the circumferential surface of 4.54' is formed as a flat surface, it is to be understood that the outer surface of the GRC board may be finished with an appropriate uneven pattern by forming the circumferential surface as an uneven surface. do not have.

The present invention is as described above, and includes a running endless belt in which grooves are formed on both sides along the longitudinal direction of the belt, and a running endless belt in which grooves are formed on both sides along the longitudinal direction of the belt, and a surface of the belt is formed in the grooves so that the surface thereof is substantially flush with the belt surface. a fixing member that is vaguely fitted and has a downwardly inclined tapered portion formed on the front end edge located at the front in the running direction of the belt; When the laminate formed by supplying the cement mixture passes through the Q and E parts of the fixing member, it is formed into an inverted trough shape by bending both sides downward, and then hardens. It is possible to continuously manufacture shaped glass fiber reinforced cement boards in a short period of time, increasing productivity.Also, for continuous manufacturing, it is possible to produce high quality products with no unevenness in the layer thickness of the material. It has excellent effects such as:

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing an embodiment of the present invention, Fig. 2 is a plan view showing a molding device, Fig. 3 is a sectional view taken along the line 1--■ in Fig. 5 (4) and (6) are action explanatory diagrams; FIG. 6 is a sectional view corresponding to FIG. 4 showing another embodiment of the support plate; and FIG. 7 is a sectional view of the present invention. FIGS. 8 to 10 are cross-sectional views of the top-shaped glass fiber reinforced cement board in an inverted state obtained by the method, and are cross-sectional views showing various modifications of FIG. 7. A... Conveyor (endless belt) B... Sheet feeding device C, F... Long glass fiber feeding device G... Short glass fiber feeding device E... Cement mortar feeding device ■... Molding equipment!・・・Choice room chant 5 Senmon 7 Zumon 8 Zumon 90 Mon 10th 11L Ri

Claims (1)

[Claims] 1. A running endless belt having concave grooves formed on both sides along the longitudinal direction of its surface, and a running endless belt that is loosely fitted into the concave grooves of the belt so that its surface is substantially flush with the four belt surface; (a fixing member having 9 downwardly inclined tapers formed on the front end edge located at the front in the running direction of the belt, and supplying long and short glass fibers and a mixture of ordinary cement mortar and ultra-fast hardening cement onto the belt; When the formed laminate is passed through the tapered part of the fixing member, both sides of the laminate are bent downward to form an inverted trough shape, and then the laminate is cured. Continuous manufacturing method of cement board.