JPH068003B2 - 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 ALC corner plate) having an L-shaped cross section or a notch on the inner surface such that the inner corner is curved. That is) a plurality of simultaneous production.

[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 is cut at a stage of a semi-plastic state before curing in the autoclave, and after the curing in the autoclave, the cut portion is removed.

[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 notch on the inner surface, in which a plurality of cores having the same cross section as the notch are formed on the bottom surface of the form. Arrange at given intervals along the direction, then AL
Injecting C raw material slurry, and when it is in a semi-hardened state, it is cut into a rectangular columnar block including one vertical surface of the core as a cutting surface and then cured by autoclave to be hardened. Is.

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, cores 2 and 2'having the same rectangular cross section as the notch of the product ALC corner plate are formed on the bottom surface of the mold 1 which is usually used for manufacturing ALC along the longitudinal direction of the mold 1. And the cores for the corner plates, which are arranged at intervals according to the dimensions of one side of the corner plates, and whose cross-sectional shape of the cutout is a quarter circle.
3'is similarly arranged, and the reinforcing bars 4, 4 ', 5, 5'are supported by a supporting rod 7 inserted into a bridge 6 which traverses the mold 1, and then the ALC raw material slurry is placed in the mold 1. When a raw material becomes semi-cured after a certain period of time has elapsed since the material is injected and foamed, the support rod 7 is rotated 90 ° as necessary to bridge 6
And the mold 1 is removed, and the chain line A to A shown in FIG.
It is cut horizontally at A, and is cut vertically so as to include the vertical surface of one of the cores 2 and 2'arranged in the form at the positions of chain lines B to B, and at the positions of chain lines C to C. After cutting vertically so as to include the vertical planes of 3 and 3 ', the autoclave is cured and hardened, and if the cores 2 and 3 are removed, an ALC corner plate with a rectangular notch or a curved notch on the inner surface is obtained. Obtainable.

It is preferable to cut the semi-plastic material B to B or C to C as close to the vertical surface of the core as possible so as not to hinder passage of a piano wire for cutting.

[Effect]

As described in detail above, according to the present invention, it is extremely easy to form a core that matches the cross-sectional shape of the notch on the inner surface of the ALC corner plate, and arrange the core in the ALC manufacturing mold to make the inner surface extremely easy. Since it is possible to manufacture an ALC corner plate with a notch, there is no problem of ALC scrap or cutting blade wear caused by cutting the cured ALC.
Its practical effect is enormous.

[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 ', 3,3' ... Core, 4,4 ', 5
5 '... Reinforcing bar, 7 ... Support rod

Claims (1)

[Claims] 1. A method of manufacturing an ALC corner plate having a cutout on an inner surface thereof, wherein a plurality of cores having the same cross section as the cutout are provided on a bottom surface of the mold along a longitudinal direction of the mold. Place at intervals, then inject the ALC raw material slurry,
When it is in a semi-cured state, it is characterized by cutting into a rectangular columnar block such that one of the vertical surfaces of the core is included in the cutting surface and then curing by curing in an autoclave to have a cutout portion on the inner surface. ALC corner plate manufacturing method.