JPH068002B2 - Method for manufacturing ALC corner plate having notch on inner surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a steam-curing lightweight aerated concrete corner plate (hereinafter referred to as an ALC corner plate) having an L-shaped cross section or a notch on the inner surface such that the inner corner is curved. Say)
The present invention relates to a method for simultaneously manufacturing a plurality of the above.

[Conventional technology]

As a conventional method for manufacturing an ALC corner plate having a notch on the inner surface, (1) a reinforcing bar is incorporated in a form having an L-shaped cross section for one piece, and ALC raw material slurry is injected and foamed in the reinforcing bar. Steam curing in autoclave, (2) JP-A-5
As shown in No. 1-34224, an L-shaped reinforcing bar is incorporated, a raw material slurry is injected, foaming is performed and then demolding is performed, thickness and width direction cutting is performed in a semi-plastic state, and autoclave curing is performed, followed by curing ALC. Either the corners of the plate are cut off by saw teeth to obtain a plate having an L-shaped cross section, or (3) JP-A-59-2270.
As shown in No. 8, there is a method in which the notch portion is cut at a semi-plastic state before autoclave curing, and the cut portion is removed after autoclave curing.

[Problems to be solved by the invention]

However, of the manufacturing methods described above, (1) is extremely inefficient because it is manufactured for one piece. (2) is easy up to autoclave curing, but cured ALC
Since it is necessary to cut one corner of the plate, the saw teeth are greatly worn out, and there are problems that two steps are required on the work surface, and cutting with an inner curved surface is difficult. Yes,
(2), (3) There was also a problem that a large amount of ALC scrap that was not a co-product was generated.

The present invention solves the above-mentioned problems of the prior art and provides a method capable of manufacturing an ALC corner plate regardless of the shape of the cutout portion on the inner surface.

[Means for solving problems]

In order to achieve this object, the present invention provides a method for manufacturing an ALC corner plate having a cutout on the inner surface, in which two cores having the same cross section as the cutout are formed on the bottom surface of the mold. Arrange at least one set along the lengthwise direction so that the vertical planes in the lengthwise direction face each other, and at least one set is arranged, and then the ALC raw material slurry is injected, and when it becomes a semi-cured state, the above-mentioned gap is set. It is configured such that it is cut into a rectangular columnar block that includes the vertical surface formed by, and is then cured by autoclave curing.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a cross-sectional view showing an embodiment of manufacturing an ALC corner plate by arranging a core in a mold and incorporating reinforcing reinforcing bars by the method of the present invention. In the figure, the cores 2 and 2'having the same rectangular cross section as the cutout portion of the product ALC corner plate are formed on the bottom surface of the mold 1 which is usually used for manufacturing ALC.
Are arranged along the longitudinal direction of the mold 1 so that the gaps 3 between the cores 2 and 2'are slightly opened, and the inner surface of the other ALC corner plate has the same cross section as the quarter cutout. The cores 4 and 4'are also arranged along the longitudinal direction of the mold 1, and the vertical surfaces of the cores 4 and 4'in the longitudinal direction are opposed to each other, and the gaps 5 thereof are slightly opened, and the reinforcing bars are reinforced. 6, 6'is supported by a supporting rod 8 which is inserted through a bridge 7 which crosses the mold 1, and then ALC raw material slurry is injected and foamed in the mold 1, and after a certain period of time, the raw material is semi-cured. When the state is reached, the support rod 8 is rotated by 90 ° as required to remove it together with the bridge 7, the formwork 1 is removed, and it is horizontally cut along the chain line A-A shown in FIG. B, B'-B ', C-C
After being cut vertically at the above position, the autoclave is cured and cured to obtain an ALC corner plate having a square notch or a curved notch on the inner surface.

The gap 3 between the cores 2 and 2'and the gap 5 between the cores 4 and 4'may be opened so that a piano wire for vertical cutting can smoothly pass therethrough.

[Effect]

As described in detail above, according to the present invention, it is extremely easy to prepare a core that matches the cross-sectional shape of the notch on the inner surface of the ALC corner plate and place it in the ALC manufacturing form. Since it is possible to manufacture an ALC corner plate having a notch on the inner surface, there is no problem of ALC scrap or abrasion of the cutting blade caused by cutting the cured ALC, and its practical effect is great. .

[Brief description of drawings]

FIG. 1 is a sectional view of an ALC mold showing an embodiment of the method of the present invention. 1 ... Formwork, 2, 2 ', 4, 4' ... Core, 3, 5 ... Gap,
6, 6 '... Reinforcing bars, 8 ... Support rods.

Claims (1)

[Claims] 1. A method of manufacturing an ALC corner plate having a cutout on the inner surface thereof, wherein two cores having the same cross section as the cutout are provided on the bottom surface of the mold along the longitudinal direction of the mold. , And at least one set is arranged with a slight gap so that the vertical planes in the longitudinal direction face each other, and then the ALC raw material slurry is injected, and when it becomes a semi-cured state, the vertical plane formed by the gap is A method for manufacturing an ALC corner plate having a notch on the inner surface, which is obtained by cutting into a rectangular columnar block including the cut surface and then curing by curing in an autoclave.