JPH0228021Y2 - - Google Patents

Description

[Detailed description of the invention] The present inventor first developed a formwork for cement products that is composed of an outer frame, an inner frame loaded into the outer frame, and a face plate laid on the bottom of the inner frame. devised.

This invention relates to a demolding device for cement products used for demolding this type of formwork for cement products, and its purpose is to speed up and optimize demolding.

Hereinafter, an optimal embodiment of the demolding device for cement products according to this invention will be described based on the drawings.

1 in the figure is a table on which a formwork 2 for cement products is placed. This table 1 is provided with four through holes 3. Further, a four-periphery frame 4 is formed for positioning the cement product form 2 to be placed.

In the figure, reference numeral 5 denotes an elevator that lifts up the face plate 6 of the formwork 2 for cement products placed on the table 1 from below.

This elevator 5 is operated by the first air cylinder 7.
A book lifting rod 8 is configured to move up and down,
Those four lifting rods 8 are connected to the four through holes 3 of the table 1, the first bottom opening 10 of the outer frame 9, and the inner frame 11.
They pass through the second bottom openings 12 of the base plate 6 and come into contact with the face plate 6, thereby pushing up the face plate 6.

In the figure, reference numeral 13 indicates a first stopper portion that only prevents the outer frame 9 from rising when the face plate 6 is pushed up by the elevator 5, and 14 indicates a first stopper portion that only prevents the inner frame 11 from rising while the face plate 6 continues to be pushed up by the elevator 5. This is a second stopper portion for blocking the movement.

The first stopper part 13 and the second stopper part 14 are each formed in a part of an opening/closing tool 16 that is opened and closed by a second air cylinder 15.

The opening/closing tool 16 is opened as shown by the dotted line in Figure 1 when the cement product form 2 is placed on the table 1, and closed as shown in the solid line in Figure 1 when removing the mold. .

Here, some supplementary information will be given regarding the formwork 2 for cement products used in the above example.

This formwork 2 for cement products is cement product 17
Even if the cement product 17 has to be removed from the mold in a state where its strength is not perfect, chipping of the bottom surface 18 of the cement product 17, that is, the corner portion 19 of the finished surface can be prevented.

The outer frame 9 of the cement product form 2 has an inner circumferential side surface formed into a tapered surface that expands outward toward the upper opening, and is made of a hard material so as not to be distorted.

On the other hand, the inner frame 11 is made of a flexible material such as a composite of soflan and wood, and has vertical cuts at the four corners. The inner frame 11 is restrained by being loaded into the outer frame 9, and its expansion is prevented.

In addition, the face plate 6 of the formwork 2 for cement products is the inner frame 1
It is formed so as to be laid over the entire bottom surface of 1. Further, it is made of a hard material so as not to be distorted, and an uneven portion 20 is provided on the surface of the cement product 17 for forming an uneven pattern on the bottom surface 18 of the cement product 17.

Further, the first bottom open portion 10 of the outer frame 9 is formed to be substantially entirely open except for the four peripheries of the bottom portion of the outer frame 9. However, the second bottom opening 12 of the inner frame 11 corresponds to the arrangement of the four lifting rods 8 of the elevator 5, and
It is formed by four holes that are slightly larger than the diameter of the hole.

Next, demolding by the demolding device for cement products according to the embodiment will be explained based on FIG. 4.

The opening/closing tool 16 is opened by operating the second air cylinder 15, and the cement product mold 2 to be demolded is placed on the table 1.

At this time, the cement product form 2 is positioned and placed using the four-periphery frame 4.

With this positioning, the formwork 2 for cement products can be moved to the first stopper part 1 of the outer frame 9 and inner frame 11 as shown below.
3. Appropriate contact with the second stopper portion 14 is performed.

The opening/closing tool 16 is closed by the operation of the second air cylinder 15.

At this time, the first stopper part 13 of the opening/closing tool 16 is located directly above the opening edge at both ends of the outer frame 9, as shown in FIG.
1 and located directly above the opening edges of both ends.

Incidentally, the gap between the opening edges at both ends of the outer frame 9 and the first stopper part 13 in FIG. 4 is designed to take into account height errors in a large number of forms 2 for cement products.

The operation of the first air cylinder 7 in the elevator 5 raises the elevator rod 8 and pushes the face plate 6 up to the state shown in FIGS.

At this time, first, as shown in FIG.
3, the rise of the outer frame 9 is prevented, and the inner frame 11
It further rises with only the face plate 6 and the cement product 17 polymerized. The inner frame 11 is released from the restraint of the outer frame 9 and expands slightly.

Next, as the inner frame 11 rises, the opening edges at both ends of the inner frame 11 move to the second stopper portion 1 as shown in FIG.
4 and prevents the inner frame 11 from rising, and the face plate 6
and cement products only 17 will increase. As shown in FIG. 4, both the face plate 6 and the cement product 17 are separated from the inner frame 11.

The demolding operation is completed by removing the face plate 6 from the cement product 17 by an appropriate means.

Incidentally, 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 particular advantage that there is no risk of the bottom corner portion 19 of the cement product 17 being chipped. There is.

In other words, according to this process, cement product 1
The bottom surface and the outer circumferential side surface of 7 do not separate from the formwork at the same time, but separate from the inner frame 11 and face plate 6 at different times, and therefore resist the adhesion force of the cement product 17 to them. This is because their departures also take place at different times.

According to the demolding device for cement products according to the invention configured as described above, the face plate 6 of the formwork 2 for cement products placed on the table 1 is lifted up by the elevator 5, and at that time, first, Only the rise of the face plate 6 is prevented by the first stopper part 13, and the inner frame 11 is released from the restraint of the outer frame 9. Then, only the rise of the inner frame 11 is prevented by the second stopper part 14, and the face plate 6 and the cement are prevented from rising. The product 17 is separated from the inner frame 11.

Therefore, the cement product can be demolded by simply removing the face plate 6 from the cement product 17 by an appropriate means, which speeds up and streamlines demolding from this type of formwork for cement products. can be achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the demolding device for cement products according to this invention, and FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. 4 is for explaining the demolding process. FIG. Main symbols in the diagram: 1: table, 2: formwork for cement products, 5: elevator, 6: face plate, 9: outer frame,
11: Inner frame, 13: First stopper part, 14: Second
Stopper section, 17: Cement products.

Claims (1)

[Scope of claims for utility model registration] Outer frame 9 and inner frame 11 loaded into this outer frame 9
and a face plate 6 laid on the bottom of this inner frame 11.
7, which comprises a table 1 on which the cement product form 2 is placed; an elevator 5 that lifts up the face plate 6 of the cement product form 2 placed on the table 1; A first stopper portion 13 that only prevents the outer frame 9 from rising when the face plate 6 is pushed up by the elevator 5.
and a second stopper part 14 that only prevents the inner frame 11 from rising while the face plate 6 continues to be pushed up by the elevator 5 after being blocked.