JPS6111769B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is a lightweight aerated concrete slab (hereinafter referred to as
It is abbreviated as ALC version. ) using a horizontal cutting method.

Conventional ALC plates use setting frames and setting rods to suspend multiple reinforcing bar baskets vertically at intervals within the formwork, and the siliceous and calcareous materials are mainly contained within the formwork. After injecting the raw material with metal aluminum powder added to the slurry, let it stand for an appropriate period of time.
When the plate reaches a semi-hardened state, it is removed from the mold and generally cut vertically using piano wire or the like to form a plurality of plates, which are then cured in an autoclave.

By the way, when performing uniform foam molding within a normal formwork, the height after cutting is approximately 600 mm due to gas release, etc.
mm, the maximum plate width is limited to 600 mm in plate manufacturing using the conventional vertical cutting method.

Therefore, when this inventor researched a horizontal cutting method to increase the width of the plate, he found that the upper plate was bent and collapsed due to the gap between the upper and lower plates that occurred with horizontal cutting, and that when the upper and lower plates were stacked after cutting, steam It has been found that poor curing can sometimes result in uneven curing. It has also been found that the former can be solved by improving the composition of the raw materials, and the latter can be solved by improving the composition of the raw materials, as well as by forming air-conducting holes that circulate the steam well and distributing it uniformly.

The present invention is characterized by a method for manufacturing an ALC plate using a horizontal cutting method using a setting rod for horizontally suspending a reinforcing bar cage and forming air guide holes in a uniformly distributed state.

The present invention will be explained below with reference to the drawings. The method according to the present invention will be carried out according to the following steps (a) to (d). That is, (a) A plurality of setting rods 1 are suspended at the upper part thereof at equal intervals and rotated by 90 degrees, and the setting rods 2 are suspended by a crane or the like, and the setting rods 1 are set at equal intervals using a jig (not shown). The set rod 1 is passed through the reinforcing bar cage holding spacers 7 that correspond vertically in the width direction of a plurality of reinforcing bar cages 6, which are held horizontally and the whole is lifted from the bottom plate 5 of the formwork 4. After the frame 2 is installed between the upper parts of the left and right side plates 8 on the bottom plate 5, the set rod 1 is rotated 90 degrees and the locking parts 9 provided on both sides thereof at equal intervals in the longitudinal direction corresponding to the left and right sides are set as described above. Hang it on spacer 7. After repeating this operation at intervals in the longitudinal direction of the reinforcing bar cage 6, the jig is removed and the mold is set using the setting rods 1 suspended and uniformly distributed within the formwork 4 through the plurality of setting frames 2. The reinforcing bar cage 6 is suspended horizontally by moving it back and forth within the frame 4 (Figs. 1 to 3).
(see figure).

However, if the above work is performed on an assembly table (not shown), the side plates 8 are attached and the reinforcing bar cage 6 is lifted.
Of course, the reinforcement arrangement may be completed at the same time as the side plate 8 is installed on the predetermined bottom plate 5.

(b) After pouring the raw material into the formwork 4, let it stand for an appropriate period of time (see Figure 4), and when it reaches a semi-hardened state, rotate the setting rod 1 by 90° in the opposite direction to the above, and turn it slightly. Then, the setting rod 1 and the reinforcing bar cage 6 are disengaged from each other.

Next, by lifting the left and right side plates 8 between the left and right side plates 8, the foamed molded body 10 is moved to the rostol 11 and placed in the hydraulic cylinder 1.
After the cutter bed 13 is aligned and placed on the set cutter bed 13, the side plate 8 is lifted up and set on the set rod 1.
is extracted from the foam molded body 10 (see FIGS. 5 and 6).

However, the foamed molded product 10 can be transported by using the set rod 1 instead of being lifted by holding the left and right side plates 8.
It may also be lifted by utilizing the engagement between the reinforcing bar cage 6 and the reinforcing bar cage 6. In this case, the engagement will be released on the cutter bed 13.

(c) The foamed molded body 10 is vertically cut across by the piano wire 14 in the bed width direction between the reinforcing bar baskets 6, 6 buried in front and back in the longitudinal direction and at the ends in the longitudinal direction (Figs. 7 and 8). ), then cut vertically at the widthwise end using piano wires 15 in the up and down direction, and cut with piano wires 16 in the bed width direction with reference to the lower surface of the foamed molded product 10, that is, the upper surface of the cutter bed that it is in contact with. The plate 17 in which the reinforcing bar cage 6 is embedded is cut out from the foam molded body 10 by horizontally and vertically cutting it (see FIGS. 9 and 10).

Note that the separated both sides of the foam molded product 10,
Both ends and the upper part are collected as scrap and reused.

(d) Raise the rostol 11 by extending the hydraulic cylinder 12, cut the edge of the overlapping plate 17 from the upper surface of the cutter bed 13, and remove the rostol 1.
1, the rostol 11 was stacked in multiple stages and placed on a trolley, placed in an autoclave, and subjected to high-temperature and high-pressure steam curing (hereinafter referred to as autoclave curing) using the removal mark of the set rod 1 as an air guide hole. Immediately after curing, mortar is filled inside the air guide holes and the surface of each plate is finished.

In order to fully cure the ALC plate manufactured in this manner in good condition, the shaft of the setting rod 1 is made several times thicker than the reinforcing bar diameter of the reinforcing bar cage 6, and the inside of the rostol 11 is In this case, the supporting bottom of the rostol 11 is designed to have a wide space to secure space around the plate group, and to maintain the support surface of the plate group smoothly even if it is deformed due to the influence of heat during curing. It has a slatted shape using T-shaped steel (see Figure 5). Making the shaft of the setting rod 1 thicker not only makes filling the mortar in the finishing process reliable and easy, but also reduces the deflection of the setting rod 1 in relation to the setting rod 2 and, ultimately, the rebar cage 6 in the formwork 4. This reduces vibration. In addition, in order to stabilize the reinforcing bar cage 6, not only the axis of the setting bar 1 is made thicker, but also one part of the entire setting bar 1 for suspending the reinforcing bar cage 6 is moved in the direction of the locking part 9. This is done by shifting the In addition, in order to adjust the height of the reinforcing bar cage 6 in the formwork when arranging reinforcement in the formwork 4, a set rod 1 can be inserted between a pair of left and right frames 18 that can be fixed to the upper part of the side plate 8. The adjustment mechanism 20 is finely adjusted using a setting frame 2 that spans the support girder 19 and is provided with an appropriate adjustment mechanism 20 that can move the support girder end up and down between the pedestal 17 and the support girder end. By doing so, the height of the reinforcing bar cage 6 within the formwork is adjusted.

According to this invention, it is possible to accurately and reliably suspend a plurality of reinforcing bar cages horizontally within the formwork at intervals using the set rods that are uniformly distributed in a suspended state within the formwork. By removing the set rod, the air guide holes can be formed in the foamed molded body in a uniformly distributed state, and by horizontally cutting the semi-hardened foamed molded body with piano wire using the bottom surface as a reference, the reinforcing bar cage can be buried accurately. It is possible to reliably cut out the printed plate without damaging the air-conducting holes, and when curing the polymerized plate in an autoclave,
Since the structure allows the steam to circulate well through the air guide holes, the horizontal cutting method of ALC plates can be carried out efficiently and with high quality. We can also manufacture ALC versions with a wider width.

[Brief explanation of drawings]

Figures 1 and 2 are a side view and a front view showing a cross section of the reinforcing bar cage support structure within the formwork, and Figure 3 is the relationship between the reinforcing bar cage holding spacer and the setting rod in Figures 1 and 2. Fig. 4 is a side view showing the manufacturing situation of the foamed molded product in cross section, Fig. 5A,
B is a front view and a right side view showing how the roaster is set on the cutter bed, FIGS. 6 to 10 are a front view and a right side view showing the process of cutting out the printing plate, and each of FIGS. A and B is a right side view and a rear view. 1... Set rod, 2... Set frame, 4... Formwork, 5... Bottom plate, 6... Reinforced cage, 7... Spacer, 8... Side plate, 9... Locking part, 10... Foaming Molded body, 11... Losttle, 12... Hydraulic cylinder, 13... Cutter bed, 14, 15, 16
... Piano wire, 17 ... Printed body, 18 ... Mount, 1
9...Support girder, 20...Adjustment mechanism.

Claims (1)

[Claims] 1 (a) A process of suspending a plurality of reinforcing bar cages horizontally at intervals within the formwork using set rods that are suspended and uniformly distributed within the formwork. (b) The step of horizontally cutting the semi-hardened foamed molded product manufactured in the formwork and from which the set rod has been removed using a piano wire using the lower surface as a reference to cut out the plate in which the reinforcing bar cage is embedded. (c) A process in which the polymerized printing plate is subjected to autoclave curing using the removal mark of the setting rod as an air guide hole. Characterized by including the steps (a) to (c) above.
Manufacturing method of ALC plate.