JPH0618681B2 - Formwork structure in centrifugal molding machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mold structure for a centrifugal molding machine.

(B) Conventional technology Conventionally, as centrifugal molding machines disclosed in Japanese Utility Model Publication No. 53-36392 and Japanese Utility Model Publication No. 51-117854, an annular base and a board are held at a fixed interval and face each other. , A formwork consisting of a large number of inner and outer frames is interposed between them, and these are rotated to supply kneading concrete between the inner and outer frames, and between the inner and outer frames. In the above, the concrete is solidified to form a concrete block of a required shape, and the formwork is generally vertical and long, and one block or pipe-shaped product is one mold. It was configured to produce in a frame.

(C) Problems to be solved by the invention Therefore, the product after the demolding work to take out the concrete block from the lower part of the cylindrical body composed of the inner frame and the outer frame, that is, the part where the base is removed is one product. Since only one product was produced from the mold, and the product itself was along the longitudinal direction of the cylinder, there was a limit to the type of product shape.

(D) Means for Solving Problems In the present invention, a cylindrical body composed of a cylindrical inner frame and an outer frame is interposed between a base and a board, and a rotating mechanism is provided. It is attached to the rotating shaft of, and between the outer frame and the inner frame,
A large number of molds that are long in the radial direction are annularly arranged side by side and intervened, and the molds are positioned in the V-shaped space formed between the side walls of each mold and at the time of demolding the molds. A frame supporting mechanism for relaxing the side wall of the mold is provided, and further, a partition plate of a required number of stages is provided inside the mold, and while the cylinder is being rotated, the kneading concrete is introduced from the inside of the cylinder between the inner and outer frames. The present invention provides a mold structure for a centrifugal molding machine, which is capable of molding a large number of concrete blocks at the same time.

(E) Operation In the present invention, when the cylindrical body is rotated while continuously supplying the kneading concrete from the inner peripheral surface of the inner frame of the cylindrical body composed of the inner frame and the outer frame, the concrete is And flow into the elongated formwork between the outer frame and the outer frame,
A concrete block conforming to the form is molded, and at the time of demolding, a predetermined concrete block is taken out from the outer peripheral surface of the outer frame or from the upper and lower sides after the cylinder is stood vertically.

At that time, since the side wall of the mold can be relaxed by operating the frame support mechanism arranged in the space between the molds, the mold can be easily released from the mold.

(F) Effects According to the present invention, since a required number of concrete products can be produced from one vertical mold between the inner and outer frames, a large number of products can be produced at the same time, and moreover, the molds separated by the partition plate can be produced. If a core is provided in the frame, a bottomed tubular product can be obtained. Alternatively, it is possible to produce a rod-shaped concrete product and a bottomed tubular product at the same time, which greatly improves the production efficiency.

Further, the side wall of the mold can be relaxed by operating the frame support mechanism, which facilitates demolding.

(G) Example To explain the example of the present invention in detail with reference to the drawings, (A) is a centrifugal molding machine, the rotating shaft (2) of the rotating mechanism (1) is a cylindrical body (3).
Is mounted to rotate the cylindrical body (3).

The cylindrical body (3) is interposed between the base (4) and the board (5), and is composed of a cylindrical inner frame (6) and an outer frame (7). , The inner frame (6) is formed with an opening (8),
(6) Kneaded concrete (M) that has flowed into the interior has the same opening
It flows into the inner frame (6) from (8).

An outer frame (7) is provided in a state of being surrounded outside the inner frame (6) at a constant interval, and a formwork is provided between the inner frame (6) and the outer frame (7).
(9) is interposed, and the opening (8) coincides with the concrete inlet of the form (9) to allow the concrete to flow into the form (9) through the opening (8).

The formwork (9) is formed in a longitudinal shape in the radial direction, is arranged in parallel in a large number between the inner frame (6) and the outer frame (7), and is formed in a rectangular shape. Mold a concrete block according to the shape of 9).

A V-shaped space is formed between the outer walls of each of the multiple molds (9), and a spacer (11) is interposed in the space to allow operation from the outside of the outer frame (7). Forming the support mechanism (10) and operating the same frame support mechanism (10) to remove the mold
The side wall of (9) is loosened to facilitate demolding.

The outer frame (7) is configured to be an outer wall of the formwork (9), and the concrete block (N) formed by the formwork (9).
Can be removed from the outer side of the mold (9), that is, the outer peripheral surface of the outer frame (7).

Further, the core (12) is housed in the form (9) to form an insertion hole (N) -1 for the concrete block (N).

However, it is also possible to construct the formwork so that it is a bar-shaped concrete product without the core (12). .

Further, the formwork (9) is provided with a partition plate (13) in several stages so that a large number of concrete products can be produced, and moreover, the formwork (9) blocked by the partition plate (13) , A core (12) is provided for each block, or a core (1)
Form block for rod-shaped concrete products without 2).

As shown in FIGS. 7 and 8, the mold block made of the partition plate (13) has the shape of the core (12) so that it can be a bottomed tubular concrete product. ing.

The formwork (9) has a rectangular shape, but the shape is not limited to a rectangular shape and may be any shape.

[Brief description of drawings]

 FIG. 1 is an overall side view of the structure of the present invention. FIG. 2 is a partially cutaway front view of the main part. FIG. 3 is a partial perspective view of the main part. Partial perspective view FIG. 5 is the same explanatory view. FIG. 6 is a cross-sectional view of a concrete product manufactured by the structure of the present invention. FIG. 7 and FIG. Centrifugal molding machine (3): Cylindrical body (6): Inner frame (7): Outer frame (9): Formwork (12): Core

Claims (1)

[Claims] 1. A cylindrical body (3) composed of a cylindrical inner frame (6) and an outer frame (7) is interposed between a base (4) and a board (5). At the same time, it is attached to the rotary shaft (2) of the rotating mechanism (1), and moreover, between the inner and outer frames (6) and (7), a large number of radially elongated molds (9) are arranged in an annular shape. The molds (9) are provided in the V-shaped space formed between the side walls of each mold (9).
And a frame support mechanism (10) that relaxes the side wall of the mold (9) during demolding, and a partition plate (13) with a required number of stages inside the mold (9). While rotating the cylindrical body (3), kneading concrete is introduced from the inside of the cylindrical body (3) between the inner and outer frames (6) and (7) to enable molding of a large number of concrete blocks at the same time. Formwork structure in centrifugal molding machine.