JPH03321Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to the structure of a formwork used for molding large U-shaped groove blocks.

Conventional technology The mounting structure of the end plate in the conventional formwork for molding U-shaped groove blocks is to move the end plate in parallel to open and close it, or to pivot the bottom of the end plate to the base and rotate it around a horizontal axis. It has a structure that opens and closes. In the former, the molded product is pulled up to a height above the gable and demolded, while in the latter, the gable is opened 20 to 30 degrees and then the molded product is pulled up to a height above the fallen gable to be demolded.

Problems that the invention aims to solve When applying this conventional gable mounting structure to large formworks, the lifting height of the molded product during demolding becomes large, which increases the height of the building ceiling. There is a problem in that it becomes impossible to remove the mold, and there is also a problem in that it is difficult to remove concrete slag that has accumulated between the base and the end plate, the side plate and the base, etc. Of course, if it is the latter structure in which the bottom of the end plate is pivoted to the base to open and close,
If you open the end plate until it becomes horizontal and move the demolded block sideways, you can demold with a small lifting height and it is easy to clean, but it is difficult to open and close by rotating the large end plate up and down. Therefore, there is a problem in that a great deal of effort is required to open and close the end plate, and there is also a risk of an accident occurring due to the end plate falling down.

The present invention solves the above problems and has a structure that allows for easy cleaning of the formwork, easy and safe opening/closing of the formwork, and the ability to demold even large blocks with a small lifting height. The purpose is to provide a framework.

Means for Solving the Problems To explain using the reference numerals attached to the drawings, the U-shaped groove block molding form 1 of the present invention includes an inner frame 3 protruding from a base 2, and the inner frame 3. It has a side plate 5 which is disposed so as to be movable in parallel in a direction toward and away from the opposite side walls. And wife board 8
The end sides 7, 5 of the two side plates 5, 5 are vertically divided into two, and each of the side plates 8a, 8b is provided so as to be movable in parallel.
7, respectively, and are provided so as to be able to open double doors.

Function: The end board 8 is vertically divided into two parts, and each of the end boards 8a and 8b is pivotally attached to the end side 7 of the side board 5 provided so as to be movable in parallel, so that the end board 8a and 8b can be opened in a double-door pattern. Therefore, even if the end plates 8a and 8b are heavy, they can be opened and closed smoothly.
It's safe. Furthermore, it becomes possible to open the end plates 8a and 8b to an angle of 90 degrees or more, and by raising the molded product 21 slightly and moving it laterally toward the opened end plate, the molded product 21 can be demolded with a small lifting height. This makes it easy to remove concrete slag that accumulates between the end board and the base, between the end board and the side board, and between the base and the side board.

Embodiment FIGS. 1 and 2 show a first embodiment of the present invention. In the figure, 1 shown overall is the formwork;
2 is a convex base of the formwork; 3 is an inner frame protruding from the base; 4 is a rail fixed to the base 1;
5 is a side plate movably placed on the rail by wheels 6; 7 is an end edge of the side plate; 8a and 8b are end plates that are vertically divided into two parts on the end piece 7 and pivoted so as to be able to open double doors; 9 is a side plate that is movably mounted on the rail; The contact surface between the end plates 8a and 8b, 10 is an opening provided in the end plate, and 11, shown only in FIG.
Fasteners 13, 14, and 15 are provided to protrude from the opening 10 when the frame is closed;
6 and 17 are brackets fixed to the frame girders 14 and 15; 18 is a positioning pin fixed to the lower side of the end plates 8a and 8b; 19 to position the end plates 8a, 8b during closing. 20 is the wife board 8
a, 8b, a space formed by the side plate 5, the base 2 and the inner frame 3, and 21 is a U-shaped groove block formed in the space. The contact surfaces 9 of the end plates 8a and 8b are tapered surfaces to avoid mutual interference between the end plates when the formwork is opened and closed.

FIG. 3 shows an example of a fastener 11 used in the formwork 1 according to the present invention. Fastener 11
The fulcrum pin 24 of the rotating link 23 is connected to the frame girder 1.
The end plates 8a, 8b are fastened to the inner frame 3 by the toggle link mechanism by fitting into the notches of the brackets 16, 17 of 4 and 15, and inserting the operating rod 26 into the space 25 of the rotation link 23 and rotating it. It is something.

Next, the opening operation of the formwork 1 will be described based on FIGS. 1 to 3.

To release the formwork 1 in the fastened state shown in FIG. 1, insert the operating rod 26 into the space 25 of the fastener 11 and rotate it to the right in FIG. Remove the fulcrum pin 24 from the notches of the brackets 16 and 17. Next, the fastener 11
through the openings 10 of the end boards 8a, 8b.
Open the end plates 8a and 8b while separating them from b. Furthermore, the coupling tool (not shown) that connects the side plates 5, 5 to each other is released, and the side plates 5, 5 are moved in parallel while being guided by the rails 4 on the base 2.
(Figure 2). Then, the formed U-shaped groove block 21 is pulled up using a chain block or the like.
Remove the mold by moving it in the longitudinal direction (front left side in Figure 2). As shown in Figure 2, the end plates 8a and 8b are 90
Since it can be opened to a double door opening of more than 10 degrees, it can be removed from the mold by simply pulling up the U-shaped groove block 21 slightly, and the opening operation of the end plate is also smooth and safe. The formwork is fastened in the reverse order to the above.

FIG. 4 shows a second embodiment of the formwork according to the present invention. In this figure, the end plate and side plate on the near side are omitted, and the same members as in the first embodiment are the same. A code is attached. Hereinafter, points different from the first embodiment will be explained.

The formwork 1 of the second embodiment is capable of changing the width (width of the groove) of the U-shaped groove block 21 to be molded, and is divided into two parts on the base 2, at least one of which is slidably mounted. Attach the underframes 28a and 28b,
The inner frames 3a and 3b, which are divided into two, are fixed to the underframe 28, and an auxiliary plate 29 having a width corresponding to the increase in the width of the block to be molded is provided on the back side of the inner frames 3a, 3b and the auxiliary plate 29. Bracket 30,
A bolt 32 is inserted between 31 and fastened. Further, an auxiliary end plate 33 having a width corresponding to the increase in the width of the block to be molded is fixed to the end plate 8a above the contact surface 9 of the end plate 8a. The opening and closing operation of the formwork is no different from that of the first embodiment. According to this embodiment, U-shaped groove blocks with different widths can be easily formed by changing the auxiliary plate 29 and the auxiliary end plate 33.

Effects of the invention As described above, by adopting the formwork structure according to the invention, cleaning work is easy, opening and closing work is easy and safe, and molded products can be demolded with a small lift. , a mold for forming a large U-shaped groove block can be obtained. In addition, since each end plate divided into two vertically is pivoted to the edge of the side plate that moves in parallel, compared to the case where the end plate is pivoted to the inner frame, the opening space of the end plate is sufficiently secured, and the width is narrower. It can be easily manufactured using a formwork.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, with FIG. 1 being a front view and FIG. 2 being a perspective view of the main parts. FIG. 3 is a perspective view showing an example of the fastener, and FIG. 4 is a perspective view of the main parts of the second embodiment, with the end plate and side plate on the near side omitted. In the figure, 1: Formwork, 2: Base, 3: Inner frame, 5: Side plate, 7: Edge of side plate, 8a, 8b: End plate, 11:
Fastener, 21: U-shaped groove block.

Claims (1)

[Scope of utility model registration request] An inner frame protruding from a base, a side plate provided so as to be movable in parallel to the side wall of the inner frame, and a end plate split into two vertically and pivotally attached to the end of the side plate so as to be able to open double doors. A formwork for forming U-shaped groove blocks.