JPS63173608A - Manufacture of light-weight aerated concrete panel - 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] [Industrial Application Field] The present invention is a lightweight cellular concrete panel manufacturing process in which lightweight cellular concrete is cut into lengths while it is in a semi-plastic state, and then stretched vertically. This invention relates to a method for manufacturing a lightweight aerated concrete panel to prevent defective products from being produced due to chipping of the lower corner of the length cut surface when cutting to thickness with a wire.

[Conventional technology]

Conventionally, when manufacturing lightweight aerated concrete panels, rc
In this method, reinforcing reinforcing bars are placed in a formwork with fixed dimensions, raw material slurry is injected, and after a predetermined period of time, when it becomes semi-plastic, this rectangular parallelepiped semi-plastic body is taken out of the formwork and the top surface is The semi-plastic body is cut to a predetermined height, transferred to a cutting device, and a cutting frame with a large number of wires stretched almost vertically is moved in the longitudinal direction of the semi-plastic body relative to the semi-plastic body to obtain a pre-determined thickness. Cut it right. Then, the cut semi-plastic body is steam-cured in an autoclave, and the plate material is finished as necessary and pressed into a product.

There are several types of devices that perform such cutting, but among these, there is one in which the semi-plastic body is placed on the lower cross member that makes up the lower side of the cutting frame as it passes under the semi-plastic body. There is a method in which a large number of cross beam members arranged along the width direction of the semi-plastic body are successively lowered to pass between the semi-plastic body and the cross beam members.

As a thickness cutting device to which the above method is applied: (a) The cross beam member supporting the semi-plastic body is the bottom plate of the formwork, and after foam molding, the whole formwork is placed on the cutting device, and then only the sides of the formwork are removed. The horizontal beam member immediately below the point where it is necessary to remove and cut to length is lowered, and a lengthwise cutting frame with a wire stretched approximately vertically is run from the width direction side of the semi-plastic body, and then lowered. A length cut is made by inserting the lower part of the cutting frame into the gap created between the cross beam member and the semi-plastic body, and after removing the cutting frame, the lowered cross beam member is restored. , and then performs thickness cutting using a thickness cutting frame.

(b) The semi-plastic body after foam molding is opened on the side of the form, the widthwise sides of the semi-plastic body are held between vertically arranged jaw members, and lifted from the bottom plate of the form by a transporting device. After the length cutting frame provided on the clamping and carrying device is moved in the air to perform long cuts, the semi-plastic bodies are arranged in large numbers along the width direction of the semi-plastic bodies on the carrying platform and can be lifted individually. The material is transferred onto the cross beam member and then cut using a thickness cutting frame.

There is.

[Problem that the invention seeks to solve]

However, in the device configured as described above, the bottom surface of the semi-plastic body is supported by a large number of cross beam members, and it is virtually impossible to maintain the correct coplanarity of these cross beam members. In the case of (a) above, since there is no support on the lower surface of the semi-plastic material when cutting, the semi-plastic material will sag slightly around the cut surface.
After the length cutting frame is removed, the impact applied to the semi-plastic body when the cross beam member is restored, the impact when the semi-plastic body is lowered onto the carrier in the case of (b), and (a) ( b
), when the thickness cutting frame passes through the length cutting section during thickness cutting, the cross beam member is lowered, and then after passing, the cross beam member rises and comes into contact with the bottom surface of the semi-plastic body. When the length cut section is subjected to an impact, cracks may occur at the corners of the length cut section, and since the VC product is cured in an autoclave as it is, there is a problem that this part of the VC product may be chipped, resulting in a defective product. .

[Means for solving problems]

The present invention provides a method for manufacturing lightweight aerated concrete panels to solve the above-mentioned problems. Thereafter, thickness cutting was performed without contacting the cross beam member immediately below the length cutting part, and autoclave curing was completed.

Embodiments of the present invention will be described below.

In the apparatus described in (a) above, the cross beam member on which the semi-plastic body is placed also serves as the bottom plate of the formwork, and the semi-plastic body is transported after being cut and cured in an autoclave using the formwork, which is removed at the time of cutting. Since the side part of the frame was cut together with the container combined with the bottom plate of the formwork, when the cross beam member immediately below the cut was lowered to pass the trap cutting frame during length cutting, if that cross beam member was removed, After that, transportation and autoclave curing are performed without a semi-plastic support immediately below the cut.

Next, in the apparatus described above, the semi-plastic body is lifted from the formwork by a clamping and conveying device, cut to length in the air, placed on a conveying platform lined with cross beam members, and sent to a thickness cutting device. The conventional method is shown in Fig. 3, in which the semi-plastic body 1 is cut to length at position 2, and cut to length at position 3 to remove the end face. This is a 4ki transport platform, and the semi-plastic material can be moved in the longitudinal direction by a large number of driving rollers 5. 6 are mounted on frames on both sides parallel to the running direction of the transport platform so as to straddle the frame. The upper surfaces of these cross beam members were on the same level, and the semi-plastic body 1 was placed thereon, so that the lower corner 7 of the cut 2 of the length cutting was easily chipped.

In the method of the present invention, as shown in FIG. By placing the liner 9 on the cross beam member 6'
After maintaining the semi-OT plastic body t at a slightly higher position, the half-OT plastic body t is transferred using a holding and transporting device. tfC, it is preferable that the cross beam member 10 directly under the longitudinal end face of the semi-plastic body 1 also not be in direct contact with the semi-plastic body 1. The carrier on which the semi-plastic material is placed in the vertical position shown in Fig. 1 is moved onto the cutting trolley 11 for thickness cutting as shown in Fig. 2, and the carrier is placed in a position corresponding to each cross beam member of the carrier. cutting cart 11
The push-up device 12 provided on the upper part
The semi-plastic body 1 is supported on the cross beam member by being pushed up except for the portion directly below and the end face cutting portion 3, and then by lowering the level of the drive roller 5, both sides of the conveyor are moved above the cutting cart. - The lower cross member of the cutting frame 14 which has been opened and the wire 13 is stretched in the longitudinal direction is moved between the lower surface of the semi-plastic body 1 and the cross beam member 15 on the compressed push-up device as the cutting frame moves relative to each other. This allows the cross beam member to be lowered so that it can pass through the space 16. After exiting the thickness cutting device, the semi-plastic material is placed on the cart as shown in FIG.

During this time, the cross beam member 6 directly below the longitudinal cut 2 is loaded into the autoclave and cured in the autoclave without always coming into contact with the semi-plastic body 1 and placed on the carrier in this state.

〔effect〕

As explained in detail above, according to the method of the present invention, after cutting a lightweight aerated concrete semi-plastic body to length, the area immediately below the cut end is kept from contacting the supporting cross beam member at all, and the material is cut to thickness and autoclaved. Since curing is performed, no impact is applied to the length-cut portion, which eliminates cracks and chips in this portion, which were a problem in the past, and greatly contributes to improving the quality of the product.

[Brief explanation of the drawing]

Figure 1 shows the state on the carrier when the method of the present invention is applied.
FIG. 2 is a schematic view showing the state in which the thickness cutting device is cutting the material, and FIG. 3 is a conceptual diagram showing the state on the carrier in the conventional method. 1... Semi-plastic body, 2... Length cutting cut, 4...
・Transportation platform, 6, 8. 10... Cross beam member, 9... Liner, 11... Cutting cart Patent applicant Sumitomo Metal Mining Co., Ltd. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A lightweight aerated concrete semi-plastic body is placed on a cutting bed with a number of vertically movable cross beam members, and a cutting frame with wires stretched in the vertical direction is moved relative to the semi-plastic body to cut the lower part of the cutting frame. In a method for manufacturing a lightweight aerated concrete panel by passing a cross member between a lowered cross beam member and a semi-plastic body to cut the thickness, and then curing in an autoclave, the cut in the semi-plastic body is cut to length. By removing the crossbeam directly below or holding the crossbeam at a lower position than other crossbeams, it is possible to perform thickness cutting and autoclave curing of the semi-plastic body directly below the cut without contacting the crossbeam. A manufacturing method for lightweight aerated concrete panels.