JP4251687B2 - Method for producing lightweight cellular concrete panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a lightweight cellular concrete panel.
[0002]
[Prior art]
Generally, when a lightweight cellular concrete panel is pasted at a construction site, it is necessary to cut the panel in accordance with an opening such as a window. In general, the panel is cut after the cutting position is marked on the panel in advance in accordance with the opening. The inking work at the site is not only very time-consuming, but also has problems such as dimensional errors, which require considerable skill. In other words, the inking operation not only makes workability at the construction site very bad, but also has the disadvantage that it causes a panel loss due to an inking size error.
[0003]
In order to solve these problems, Japanese Utility Model Laid-Open No. 61-137712 proposes a building panel having dimension lines printed on the panel surface in advance. However, the attachment of dimension lines by printing often causes the dimension lines to disappear or become unclear due to rubbing or rain on the panel surface, especially in lightweight cellular concrete panels, because the panel surface is rough. Not only is it difficult to make the printing clear, but the rough surface of the panel falls off in a powder form, so that the printing tends to become unclear immediately.
[0004]
On the other hand, there is an increasing demand for lightweight cellular concrete panels with excellent design properties. As means for forming patterns on lightweight cellular concrete panels, Japanese Patent Publication No. 3-27368, Japanese Patent Publication No. 5-34121, A method for pressing a decorative mold having a pattern against a semi-cured panel is proposed in Japanese Patent Application Laid-Open No. 9-110550. When printing dimension lines on the back side of lightweight cellular concrete panels having this decorative pattern, not only the above-mentioned problems, but also two processes, a decorative pattern applying process and a dimension line printing process, are required, which significantly increases product productivity. There are also problems to reduce.
[0005]
[Problems to be solved by the invention]
The present invention provides a lightweight cellular concrete panel that solves the above-mentioned problems. That is, the subject of this invention is providing the method of manufacturing them, without impairing the productivity of the non-decoration | decoration with which the clear and the cutting | disconnection mark which does not lose | disappear, and the uneven | corrugated decorative pattern lightweight cellular concrete are not impaired remarkably.
[0006]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventors have found that a lightweight cellular concrete panel provided with a concave cut mark can achieve the above-mentioned problems of the present invention, and to complete the present invention. It came. That is, the present invention
1. Lightweight bubble characterized by forming a concave and convex decorative pattern on one side and a cutting mark on the other side simultaneously by pressing a semi-cured panel between the concave and convex decorative pattern forming surface and the cut mark forming surface of the mold It is a manufacturing method of a concrete panel .
[0007]
The present invention is described in detail below.
The concave cutting mark in the present invention indicates the cutting position of the panel, and since it is provided on the panel itself, it is clear and does not disappear or become unclear even if the panel is rubbed. Since the shape is concave, there is an advantage that cutting can be easily performed without escaping the blade during cutting. Here, the width, length, and depth of the cutting mark are not particularly limited, but the width is the same as the width of the blade, and the longer the length, the easier the cutting and the depth is required. If it is deeper than this, it may cause a significant decrease in panel strength. Therefore, up to about 1/3 of the maximum panel thickness is appropriate. However, in actual cutting operations, it is a little regardless of the panel thickness. In the present invention, the cutting mark is 1-5 mm in width, 1-10 mm in depth, and the length is a vertical line or horizontal line, regardless of the panel length, width, or thickness. It is preferable that at least one is provided with the full length of a panel and full width, More preferably, it is 1-3 mm in width and 2-5 mm in depth. Moreover, since the dimension module uses the metric system or the scale penetration method according to the structure of a building, what is necessary is just to provide the space | interval which provides a cutting mark as needed. In recent years, the standardization of buildings has progressed, and there are cases where the cutting points are determined in advance, and these may be provided at arbitrary points as necessary.
[0008]
In the present invention, the method of attaching the cutting mark may be a method of processing the panel after autoclave curing with a blade or the like, or a method of pressing a pressing die portion having a cutting mark forming surface on a semi-cured panel. The method of pressing the part not only eliminates the problem of the coarseness of the panel surface being crushed and falling off, but also eliminates the need for processing after autoclave curing, improving productivity by shortening the process and reducing product costs by reducing equipment. In addition to the advantages such as reduction, it is possible to simultaneously press a pressing mold part having an uneven decorative pattern forming surface on one side of the semi-cured panel and a pressing mold part having a cut mark forming surface on the other side, Since it has the advantage of being able to efficiently produce high-value-added panels with uneven decorative patterns and cutting marks, it can be used after autoclave curing. Than a method of processing a Le, a method of pressing the pressing mold portion having a cutting mark forming surface in a semi-cured panel is more preferable.
[0009]
A typical example of a formwork apparatus for producing a lightweight cellular concrete panel according to the present invention is shown in FIG. The formwork apparatus of the present invention includes a side frame portion 8 that supports the side surface of the semi-cured panel 1 from the periphery, one pressing mold portion 6 having an uneven decorative pattern forming surface, and the other pressing having a cut mark forming surface. The mold part 7 is arranged to face the top plate 9 and the bottom plate 10. Here, the top plate 9 may not only hit the side frame portion 8 as shown in FIG. 1, but may enter between the side frame portions 8 similarly to the pressing die portion 7 having the cut mark forming surface. The side frame portion 8 is for supporting the semi-cured panel 1 in order to prevent the semi-cured panel 1 from being damaged, and the pressing mold portions 6 and 7 having an uneven decorative pattern forming surface and a cut mark forming surface. Can press the semi-cured panel 1 at the same time to form an uneven decorative pattern 3 on one side and a concave cut mark 4 on the other side. Here, both of the pressing mold parts 6 and 7 may be arranged on the top plate 9 and the bottom plate 10, or may be integrated with or separated from the top plate 9 and the bottom plate 10. Absent.
[0010]
Further, in the present invention, the pressing mold parts 6 and 7 having the concave / convex decorative pattern forming surface and the cut mark forming surface are pressed on the semi-cured panel 1 so that the concave / convex decorative pattern 3 is provided on one side and the concave cut mark 4 is provided on the other side. In the provided lightweight cellular concrete panel, the heavy portion 2 is formed from the concave portion of the uneven decorative pattern 3 and the bottom of the cutting mark 4 to the middle of the panel. The heavy portion 2 has a reinforcing effect of suppressing a reduction in the strength of the panel because the bubbles are crushed and the density is partially increased and the strength is higher than the bubble portion. Moreover, it is preferable that the reinforcement 5 is embed | buried in the lightweight cellular concrete panel in this invention.
[0011]
The semi-cured panel according to the present invention is a lightweight cellular concrete panel having plasticity prior to autoclave curing. The semi-cured panel may be manufactured by an existing method. For example, a raw material slurry obtained by mixing gypsum, crushed debris, foaming agent, etc. with silica, cement, quick lime, water as the main raw material, After pouring into a formwork with reinforcing bars or wire netting and curing it to a hardness suitable for cutting, it is removed from the formwork to form a semi-cured mortar block, which is used as a tensioned piano wire, etc. Manufactured by cutting with wire. Further, the length, width and thickness of the semi-cured panel are not particularly limited, but the hardness has a compressive strength of 0.6 to 5.0 kg / cm ² in the strength test measurement method based on JIS A5416. Those are preferred.
[0012]
The press mold in the present invention is not particularly limited in material, shape, size, etc., as long as it has a strength capable of transferring an uneven decorative pattern to a semi-cured panel. For example, rubber, resin, Metal or the like can be used. The pressing molds that can be used more preferably in the present invention are urethane resin, epoxy resin, steel, stainless steel, aluminum and the like. Moreover, it is preferable to apply a release agent to the pressing die as a means for preventing chipping during demolding after pressing.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to examples.
A lightweight cellular concrete panel provided with an uneven decorative pattern on one side of the panel and a concave cut mark on the other side was obtained by the following procedure.
First, 53 parts by weight of silica, 7.5 parts by weight of quicklime, 37 parts by weight of cement, 2.5 parts by weight of dry gypsum, and 68 parts by weight of water and 0.06 parts by weight of aluminum powder are mixed with 100 parts by weight of these solid contents. The injected mortar slurry is poured into an injection mold provided with a reinforcing wire mesh in advance, and then the semi-cured lightweight foam mortar block is cured and cut with a tensioned piano wire, length 2000 mm, width A semi-cured panel having a thickness of 610 mm and a thickness of 50 mm was obtained. Next, this semi-cured panel is placed on a pressing mold made of urethane resin having a brick pattern arranged on the bottom plate in the mold apparatus, and further a cutting mark having a width of 3 mm, a length of 610 mm, and a depth of 3 mm. A pressing mold made of urethane resin having an interval of 500 mm is arranged on the panel, and the side surface of the semi-cured panel is supported by the side frame, and the pressing mold and the side frame are demolded by pressing 10 mm, and the autoclave Cured. The mortar hardness at the time of pressing was 1.5 kg / cm ^{2 when} measured by a method based on JIS A5416.
[0014]
It was confirmed that the lightweight cellular concrete panel obtained in this example showed no defects such as cracks and chips, the uneven decorative pattern and the cut mark were clearly transferred, and the cutting work could be easily performed.
[0015]
【The invention's effect】
The present invention is a completely new technique as described in detail above, and has the following remarkable effects.
1. The cutting mark according to the present invention is clear because it is provided on the panel itself, and does not disappear or become unclear even if the panel is rubbed.
2. Since the shape of the cutting mark is concave, the blade can be easily cut without escaping during cutting.
3. Not only can the inking and panel cutting work at the construction site be greatly saved, but also panel loss due to dimensional errors can be reduced.
4). Furthermore, by pressing the semi-cured panel simultaneously with a pressing mold having an uneven decorative pattern forming surface and a cut mark forming surface, it is possible to form an uneven decorative pattern on one side and a cut mark on the other side. Combined with the advantage of efficient production of high panels.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a formwork apparatus for manufacturing a lightweight cellular concrete panel according to the present invention (a semi-cured panel is also shown).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Semi-hardened panel 2 Heavy part 3 Uneven decorative pattern 4 Cutting mark 5 Reinforcement 6 Pressing part 7 which has an uneven decorative pattern formation surface The other pressing mold part 8 which has a cutting mark formation surface Side frame part 9 Top plate 10 Bottom plate

Claims (1)

Lightweight bubble characterized by forming a concave and convex decorative pattern on one side and a cutting mark on the other side simultaneously by pressing a semi-cured panel between the concave and convex decorative pattern forming surface and the cut mark forming surface of the mold A method for producing a concrete panel.

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