JPH0146291B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing panels used for various building materials, and in particular, to a method for manufacturing panels that are used for various building materials, and in particular, to produce a smooth and beautiful surface even when the manual plastering trowel finishing step is omitted. The present invention relates to a panel manufacturing method capable of efficiently manufacturing a panel having the following characteristics.

[Conventional technology]

During the manufacturing process for this type of architectural panel, finishing work using a plastering trowel was required to finish the panel surface. This is because hydraulic mixtures such as gypsum and cement immediately after pouring contain excess air bubbles and excess water, which do not cover rough or uneven surfaces until a certain period of time has elapsed. Naturally, in order to manufacture architectural panels with beautiful surfaces that are smooth and free of irregularities, a manual plastering and trowel finishing process was required.

[Problem that the invention seeks to solve]

However, the above-mentioned finishing process with a plastering trowel requires skilled techniques, and when manufacturing a large number of architectural panels, it ultimately requires a great deal of labor and time, making it extremely inefficient in terms of production efficiency. Depending on the level of skill involved, there was a good chance that the product would be inconsistent and defective architectural panels would be manufactured that did not necessarily have the required surface finish.

In the present invention, there is provided a method for manufacturing panels that omit finishing with a plastering trowel, which can automatically and efficiently produce architectural panels with a desired surface finish without requiring a surface finishing step with a plastering trowel. We aim to provide the following.

[Means for solving problems]

The above-mentioned problem arises when the base formwork has an upright wall that is located on the top surface of the base formwork and has a sloped part on the outer periphery, and has a wedge-shaped end that makes line contact with the bottom surface of the base formwork that is located on the upper stage. After pouring a hydraulic mixture such as gypsum and cement into the upright wall of the peripheral formwork, the surface is slightly higher than the upper edge of the upright wall, and a base mold is placed on this upper surface. In the process of gently placing the base formwork with peripheral formwork on the frame or top surface, excess mixture of hydraulic mixture such as plaster and cement and air bubbles are brought into line contact with the bottom surface of the base formwork and its surroundings. In addition to discharging through the gap between the standing walls of the formwork, when the base formwork or the base formwork having the peripheral formwork on its upper surface comes into contact with the upper edge of the standing wall of the peripheral formwork, plaster, cement, etc. Method for producing a panel without plastering trowel finishing, characterized in that the upper surface of the hydraulic mixture is brought into tight pressure contact with the lower surface of the base formwork located on the upper surface.The base formwork has an upright wall located on the upper surface of the base formwork. After pouring a hydraulic mixture such as gypsum and cement into the upright wall of the peripheral formwork, the surface is slightly higher than the upper edge of the upright wall, and the base formwork is placed on top of this. Alternatively, in the process of gently placing the base formwork with the peripheral formwork on the top surface, excess mixture of hydraulic mixture such as gypsum and cement and air bubbles are removed between the bottom surface of the base formwork and the upright wall of the peripheral formwork. When the base form or the base form having the peripheral form on its upper surface comes into contact with the upper edge of the upstanding wall of the peripheral form, the top surface of the hydraulic mixture such as gypsum and cement The problem is solved by a method of manufacturing a panel that eliminates plastering trowel finishing, which is characterized by making the panel come into tight pressure contact with the lower surface of the base formwork located on the upper surface.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. In the figure, reference numeral 1 denotes a base formwork, which is made of a flat plate with smooth surfaces on its upper and lower surfaces. A peripheral formwork 2 is located on the upper surface of the base formwork 1 and has an upright wall portion 2a. The end portion 2a' of the standing wall portion 2a has a wedge shape with an inclined portion on the outer periphery and is in line contact with the lower surface of the base form 1 located at the upper stage. 3 is a hydraulic mixture such as gypsum and cement that is poured into the upright wall 2a of the peripheral formwork 2 on the base formwork 1, and in the present invention, the surface is poured into the upright wall 2a. It is cast slightly higher than the top 2a'' of the standing wall 2a, and is cast slightly higher than the top 2a'' of the standing wall 2a. Next, on top of the processed mixture 3, another base form 1 or a base form 1 having a peripheral form 2 on the top is gently placed. In this process, a hydraulic mixture such as gypsum and cement 3
Excess mixture and air bubbles are discharged from the space 4 between the bottom surface of the base formwork 1 and the top part 2a' of the upright wall 2a of the peripheral formwork 2. In particular, in the present invention, the end part 2a' of the upright wall 2a is wedge-shaped. Since the top portion 2a'' is in line contact with the lower surface of the base formwork 1 located on the upper surface, the mixture and air bubbles are discharged extremely smoothly. When the base formwork 1 is completely placed on the base formwork 1, the hydraulic mixture such as gypsum and cement is in complete tight pressure contact with the lower surface of the base formwork 1 located on the upper surface thereof. If necessary, repeat this operation in multiple stages toward the upper stage, and after pouring and curing, remove the base formwork 1 and peripheral formwork 2 located above in order to achieve the desired result without the plastering trowel finishing process. It is possible to obtain one or more architectural panels.

[Actions and effects of the present invention]

According to the present invention, when the base formwork 1 is gently placed on the upper surface of the hydraulic mixture 3 of plaster and cement, etc.
Due to the pressure of However, at this time, combined with the pressure from above, the excess mixture and air bubbles come into line contact with the base formwork 1 and the peripheral formwork 2 without surface contact.
The excess mixture and air bubbles are discharged smoothly from the gap between the top 2a'' of the upright wall 2a of the peripheral formwork 2. As it is discharged, the upper surface of the hydraulic mixture 3 comes into complete tight pressure contact with the lower surface of the base formwork 1, and after curing, when the formwork is removed, a smooth surface similar to that achieved by plastering with a trowel will appear. Therefore, according to the present invention, the plastering trowel finishing process, which requires skill and is inefficient in terms of labor and time when manufacturing a large number of panels, can be omitted, resulting in extremely high manufacturing efficiency and It has now become possible to easily manufacture panels with suitable smooth surfaces.

Furthermore, according to the method of the present invention, by final restraint, rapid restraint curing using steam or the like can be performed immediately after pouring, and it has also become possible to further improve manufacturing efficiency.

[Brief explanation of drawings]

The drawings are schematic cross-sectional views showing the process of manufacturing a panel obtained by the method of manufacturing a panel in which plastering trowel finishing is omitted according to the present invention. 1... Formwork, 2... Peripheral formwork, 2a... Standing wall section, 2a'... End of standing wall section 2a, 2a''... Top of standing wall section 2a, 3... Plaster, cement, etc. A hydraulic mixture of 4... between the lower surface of the base formwork and the upper part of the upright wall of the peripheral formwork 2.

Claims (1)

[Scope of Claims] 1. A base formwork, an upstanding wall located on the upper surface of the base formwork and having an inclined portion on the outer periphery, and consisting of a wedge-shaped end portion that is in line contact with the lower surface of the base formwork located on the upper stage. A peripheral formwork comprising: a hydraulic mixture such as gypsum and cement is poured into the upright wall of the peripheral formwork, and then the surface is made slightly higher than the upper edge of the upright wall;
In the process of gently placing the base formwork or the base formwork having peripheral formwork on the top surface, excess air bubbles of a hydraulic mixture such as gypsum and cement are brought into line contact with the base formwork. In addition to discharging from the gap between the lower surface and the upright wall of the peripheral formwork, when the base formwork or the base formwork having the peripheral formwork on the upper surface comes into contact with the upper edge of the upright wall of the peripheral formwork, the plaster and A method for manufacturing a panel that eliminates plastering trowel finishing, characterized in that the upper surface of a hydraulic mixture such as cement is brought into tight pressure contact with the lower surface of a base formwork located on the upper surface. 2. After pouring a hydraulic mixture such as gypsum and cement into the upright wall of the peripheral formwork described in claim 1, the surface is made slightly higher than the upper edge of the upright wall, and then the upper surface is A method for producing a panel that eliminates plastering trowel finishing, characterized in that the work process of gently mounting a base formwork or a base formwork having a peripheral formwork on the upper surface is repeated in multiple stages facing upward.