JPH08158366A - Method and apparatus for forming concrete block having trapezoidal surface - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a method and an apparatus for easily manufacturing an accessory block used for an end portion when a concrete block is piled up. [Structure] Formwork 2 of the bottom-out concrete block molding machine
When concrete is supplied inside to form a concrete block having a trapezoidal surface 7, a core 5 in contact with the slope is inserted into a portion forming a trapezoidal slope, and then the material is supplied and the projection is fitted into the slope. A method of forming a concrete block having a trapezoidal surface, in which the block 1 is formed by pressing from above with a pressing die having the above and simultaneously vibrating the form frame by the vibrating body 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for molding a concrete block having a trapezoidal surface by a lower concrete block molding method.

[0002]

2. Description of the Related Art A trapezoidal concrete block has an inclined side part in a part of its shape.
When concrete is supplied from the upper side, the filling amount of the concrete material in the inclined side becomes large, and it is impossible to form it to an average density. The solution is to place the mold so that the top part is on the bottom and the bottom part is on the top when molding, feed from the bottom part, apply vibration and pressure, mold, and then invert the mold to receive. The method of hanging on a board was performed. However, in this method, a molding machine dedicated to the accessory is required in addition to a normal product, and there is a problem that the equipment cost for manufacturing increases.

[0003]

DISCLOSURE OF THE INVENTION In the present invention, when a concrete block having a trapezoidal surface is molded by a bottom-drawing block machine, concrete is filled so that the inclined side portion and the upper surface of the horizontal portion of the trapezoid have a uniform density. The present invention aims to provide a method and apparatus for molding a concrete block that can be pressed.

[0004]

The constitution of the present invention for solving the above-mentioned problems is a trapezoidal concrete block molding method and apparatus as set forth in the following claims. That is, when concrete is supplied into the formwork of a bottom-out concrete block molding machine to form a concrete block having a trapezoidal surface, after inserting a core in contact with the sloped portion into the portion forming the trapezoidal sloped surface. A method for forming a concrete block having a trapezoidal surface, which comprises supplying a material and pressurizing it from above with a pressing die having a protrusion fitted into a slope portion, and at the same time vibrating the form to form a block. As a device for that,
It is characterized by having a mold forming the outer shape of a concrete block, a core forming a trapezoidal slope, a die having a projection for pressing the slope in the mold from above, and a vibrating device for vibrating the entire molding frame. , Using a bottom-drawing molding device of a concrete block having a trapezoidal surface.

Referring to the drawings, a concrete block having a trapezoidal surface to be molded according to the present invention can be represented by the plan view of FIG. 4, the elevation view of FIG. 5 and the side view of FIG. It is something. That is, it is an accessory block arranged at the end of a row when a concrete block having a rectangular surface is piled up in a valley, and has a shape in which the surface 7 having the inclined portion 11 and the buttocks 13 are joined by the body portion 14. ing. There is a cutout 12 on the lower surface of the body 14, and the block can be easily hung by inserting the support protrusion of the hanging metal fitting into the cutout 12. To mold this block, for example, it is preferable to mold it with a mold shown in FIGS. The examples shown in these figures are for molding two blocks at once. 1 is a plan view of the mold, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG. As shown in the plan view of FIG. 1, the block 1 in which the surface 7 and the surface 7-2 are opposed to each other
And a block 1-2 are molded at the same time.

A core 5 for preventing concrete from flowing into the slope is disposed inside the formwork 2 arranged inside the formwork forming frame 2-2, and further a formwork forming liner 8 and a tail end. A liner 9 and a mating liner 10 are placed to form voids of material for the block 1. This formwork configuration frame 2-
A vibrating body 3 having a vibrating pendulum 4 is attached to 2. Above the mold 2 is provided a pressing die 6-2 having a pressing protrusion 6 for pressing the slope.

In order to mold a concrete block with this apparatus, first, concrete is supplied from above into the holes formed in the mold 2. Next, the pressing die 6-2 is lowered, the pressing die projection 6 is inserted into the mold frame 2 to form an inclined portion, and then the concrete is pressed from above by the pressing die 6-2. Simultaneously with this pressurization, the entire formwork is vibrated by the vibrating body 3 to form concrete in the formwork. After the molded concrete block is pulled out from the formwork, it is cured at a predetermined place. By this method, a concrete block having a trapezoidal surface can be molded by an apparatus for molding a normal block.

[0008]

As described above, according to the present invention, a concrete block having a trapezoidal surface can be easily manufactured without using a dedicated device.

[Brief description of drawings]

FIG. 1 is a plan view of a mold of an apparatus for manufacturing a concrete block having a trapezoidal surface according to the present invention,

2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a plan view of a trapezoidal concrete block manufactured by the manufacturing method of the present invention,

5 is an elevation view of the concrete block of FIG. 4,

FIG. 6 is a side view of the concrete block shown in FIG.

[Explanation of symbols]

 1 Concrete block having a trapezoidal surface 1-2 Same as above 2 Formwork 2-2 Formwork configuration frame 3 Vibrating body 4 Vibration pendulum 5 Core 6 Stamping protrusion 6-2 Stamping 7 surface 8 Formwork forming liner 9 Butt liner 10 Joint end liner 11 Inclined part 12 Missing part 13 Resting edge 14 Body

Claims (2)

[Claims] 1. When a concrete block having a trapezoidal surface is formed by feeding concrete into a formwork of a bottom-drawing concrete block molding machine, a core which is in contact with the sloped surface of the trapezoidal surface is formed. A method of forming a concrete block having a trapezoidal surface, characterized in that the block is formed by feeding the material after placing it, and pressurizing it from above with a pressing die having a projection that fits into a slope portion, and at the same time vibrating the form frame. 2. A mold for forming the outer shape of a concrete block, a core for forming a trapezoidal slope, a mold having a projection for pressing the slope in the mold from above, and a vibration device for vibrating the entire molding frame. An under-molding device for a concrete block having a trapezoidal surface.