JPS59174308A - Manufacture of cement product - 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 The present inventor first poured and solidified a cement mixture into an inner frame that was loaded into an outer frame and had a drawing board laid on the bottom, and then removed the cement mixture and poured it into a cement mixture. devised a method to manufacture the product.

This invention relates to a cement product manufacturing method characterized by the demolding process of such a manufacturing method, and is proposed for the purpose of speeding up and optimizing the manufacturing of cement products. In the method of manufacturing a cement product by pouring and solidifying a cement mixture into an inner frame in which a face plate is laid at the bottom and then removing the mold, the inner frame with the cement mixture solidified is loaded. After placing the outer frame on the table of the demolding device, the elevator lifts up the face plate, and the first stopper of the demolding device prevents only the outer frame from rising, and the inner frame is removed. After releasing the frame from restraint and continuing to push the face plate up by the elevator after the release, the second stopper part of the demolding device prevents only the rise of the inner frame, and the face plate is separated from the inner frame. , is a cement product manufacturing method characterized by removing the face plate from the concrete product and demolding it.

The following will explain based on the drawings.

In the figure, (1) is a demolding device.

The demolding device (1) is provided with a table (3) on which the outer frame (2) is placed. That table (3) has 4
Four through holes (4) and a four-periphery frame (5) for positioning the outer frame (2) to be placed are formed.

In the figure, (6) is an elevator that pushes up the face plate (7) from below.

This elevator (6) is operated by the first air cylinder (8).
The book lifting rods (9) are configured to move up and down, and these four lifting rods (9) are connected to the four through holes (4) of the table (3) and the first bottom of the outer frame (2). The opening part (10) and the inner frame (one second bottom opening part (12) are penetrated through the face plate (12) respectively.
7) and push up the face plate (7).

In the figure, (13) is the first stopper part that prevents only the outer frame (2) from rising when the face plate (7) is pushed up by the elevator (6), and (14) is the elevator (6) after this is blocked. This is a second stopper portion that only prevents the inner frame (11) from rising while the face plate (7) continues to be pushed up.

These first stopper part (13) and second stopper part (1
Opens and closes using the second air cylinder 15).
They are each formed in a part of the opening/closing tool (16) of the demolding device (1).

The opening/closing tool (16) is opened as shown by the dotted line in Figure 2 when placing the outer frame (2) on the table (3), and closed as shown in the solid line in Figure 2 when demolding. Manipulate the state.

Here, some additional information will be given regarding the formwork (17) mentioned above.

Even in the case where the cement product (18) has to be demolded in a state where its strength is not perfect, the formwork (17) described above can be used during the demolding process to ensure that the bottom surface (19), the bottom surface of the cement product (18), and the Second, chipping of the corners (20) of the finished surface can be prevented.

The outer frame (2) of this formwork (17) has an inner circumferential side surface tapered outward toward the upper opening, and is made of a hard material so as not to be distorted. .

In contrast, the inner frame (1) is made of a flexible material such as a composite material of soft plastic and wood, and has vertical cuts at the four corners. The inner frame (11) is restrained by being loaded into the outer frame (2) and is prevented from expanding.

Moreover, the face plate (7) of the formwork (17) is formed so as to be laid over the entire bottom of the inner frame (11). Further, it is made of a hard material so as not to be distorted, and its surface is provided with an uneven portion (21) for adding an uneven pattern to the bottom surface (19) of the cement product (18).

Further, the first bottom open portion (1o) #'i of the outer frame (2) is formed to be substantially entirely open except for the four peripheries of the bottom of the outer frame (2). However, the second bottom opening part (12) of the inner frame (11)
corresponds to the arrangement of the four lifting rods (9) of the elevator (6),
In addition, the hole is formed by four holes that are slightly larger than the diameter thereof.

Next, a demolding process using the demolding apparatus and the like according to the embodiment described above will be explained based on FIG. 1.

(2) The opening/closing tool (16) is expanded and opened by the operation of the second air cylinder (15), and the formwork (17) to be demolded is placed on the table (3).

At this time, the frame (17) is positioned and placed on the four-periphery frame (5).

For this positioning, the following outer frame (
2) Appropriate contact of the inner frame (11) with the first stopper part (13) and the second stopper part (14) is performed, respectively.

■ Close the opening/closing tool (16) by operating the second air cylinder (15).

At this time, the first stopper part (16) of the opening/closing tool (16) is located directly above the opening edge at both ends of the outer frame (2) as shown in Figure 1 (■), and the second stopper part (14) is located inside the opening. The frame (11) is located directly above the opening edges at both ends.

The gap between the opening edges at both ends of the outer frame (2) and the first stopper part (13) in FIG.

■ The first air cylinder (8) in the elevator (6) is activated to raise the elevator rod (9) and push the face plate (7) up from ■ to the state shown in Figure 1.

At this time, first, the opening edges at both ends of the outer frame (2) come into contact with the first stopper part (13) of the opening/closing tool (16) as shown in FIG. 1, and the rise of the outer frame (2) is prevented. The inner frame (11), the face plate (7), and the cement product (18) are further raised in a state where they are polymerized. The inner frame (11) is released from the restraints of the outer frame (2) and expands slightly.

Next, as the inner frame (11) rises, the opening edges at both ends of the inner frame (11) come into contact with the second stopper part (14) as shown in FIG. and cement products (18).

As shown in Figure 1 ■, the face plate (7) and the cement product (18)
) both leave the inner frame (11).

■ The demolding work is completed by removing the face plate (7) from the cement product (18) by appropriate means.

However, when the demolding process according to this embodiment is performed when the cement mixture is in a solidified state where its strength has not been fully developed, there is a risk that the bottom corner (20) of the cement product (18) may be chipped. There is an advantage that there is no

In other words, according to this process, the bottom surface and the outer peripheral side surface of the cement product (18) do not separate from the formwork at the same time;
This is because the separation from the inner frame (11) and the face plate (7) takes place at different times, and therefore the removal of the cement product (18) against the adhesion force to them also takes place at different times. It is.

As described above, according to the manufacturing method for cement products according to the present invention, the demolding process involves pushing up the face plate with an elevator,
The first stopper part of the demolding device only prevents the outer frame from rising, the accompanying release of the inner frame from the outer frame, and the first stop of the demolding device while the elevator continues to push up the face plate after the release. This process is quickly carried out through a series of mechanical processes in which only the rise of the inner frame is prevented by the second stopper, and the accompanying separation of the face plate from the inner frame. It can be said that this manufacturing method is suitable for mass production of cement products because it can be simplified and speeded up.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional view for explaining the demolding process of the cement product manufacturing method according to the present invention, and FIG. 2 is a front view showing an apparatus used in an embodiment of the cement product manufacturing method according to the present invention. 3 is a side view of the device shown in FIG. 2, and FIG. 4 is a plan view of the device shown in FIG. Main symbols in the figure... (S: demolding device, (2): outer frame,
(3): Table, (6): Elevator, (7) Two-sided plate, (
11) : Inner frame, (13) : First stopper part, (14
): Second stopper S, <18): Concrete product. Figure 1 ■ ■ ■ 9 So 9 Figure 3 6

Claims (1)

[Scope of Claims] A method for manufacturing a cement product by pouring a cement mixture into an outer frame and solidifying the mixture while the outer frame is loaded and a face plate is laid at the bottom, and then demolding the mixture, After placing the outer frame loaded with the inner frame in which the cement 4 composite material has been solidified on the table of the demolding device, the elevator lifts up the face plate, and the first stopper of the demolding device lifts the outer frame. Frees the inner frame from the restraints of the outer frame by preventing only the rise of the outer frame,
While the face plate continues to be pushed up by the elevator after the release, the second stopper part of the demolding device prevents only the rise of the inner frame, and the face plate is separated from the inner frame, and then the face plate is removed from the concrete product. A cement product manufacturing method characterized by demolding by