JPH0866798A - Compacting machine of granular material - Google Patents

Abstract

PURPOSE: To automatically produce a composite molded goods using more than two kinds of powder materials, to improve the producing efficiency and to less control the dispersion between the products. CONSTITUTION: This is a compacting machine of a granular material composed of a powder material supplying part 20 to supply a prescribed amount of the granular material into a hollow part 101 of a movable die 10 having the hollow part 101 in order to compact the granular material to a prescribed shape and a compacting part 30 to compact the granular material supplied into the hollow part 101 of the movable die 10. The powder material supplying part 20 is installed movably under a hopper 21, it has a cutting part 221 of a shape of essentially congruent with the plane shape of the hollow part 101 of the movable die 10 or some smaller than the congruence, and it is composed of a thickness plate 22 whose bottom plate 222 is installed movably on the lower part of the cutting part 221 and a means for moving hopper 22 and/or the thickness plate 22.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to molding of granular materials such as sand, rubber chips, sugar, rice flour and wheat flour, and a mixture of these granular materials with a liquid, which is pressed into a predetermined shape to form a molded article. Regarding the machine. The molding machine of the present invention is preferably used for molding a rubber chip pavement material including a rubber chip and a urethane binder or a pavement material in which gravel or sand is mixed with a urethane binder into a plate-shaped pavement block. In addition, the molding machine of the present invention is also preferably used for manufacturing concrete block pavement materials. Further, it is also suitably used for producing various kinds of Japanese confectionery such as falling geese and biscuits.

[0002]

2. Description of the Related Art A rubber chip pavement material obtained by mixing a urethane binder and a pigment into a rubber chip crushed from waste tires or the like to have a particle size of about 1 to 5 mm is put into a mold and hardened, so that the pavement is porous and has an appropriate elasticity. Get mats and paving blocks. Such pavement mats and interlocking pavement blocks are extremely easy to construct, and the obtained pavement surface has appropriate elasticity and is excellent in walking feeling. For this reason, it has come to be widely used for paving roads such as golf course paths.

The above-mentioned pavement mat and pavement block have hitherto been manufactured by a method of manually pouring rubber chip pavement material into a mold one by one and press-molding this with a press.

[0004]

In recent years, demand for pavement mats and pavement blocks molded from rubber chip pavement materials has increased significantly. Nevertheless, these pavement mats and pavement blocks have so far been manufactured by a method of manually molding them one by one, so that the demand cannot keep up with the supply. There is also a problem that variation between lots tends to be large. Further, in recent years, as the demand for pavement mats and the like has become higher, pavement mats and pavement blocks using rubber chip pavement materials in which the average particle size of the rubber chips differ between the upper surface and the lower surface have begun to be manufactured. Further, by using a normal rubber chip pavement material on the upper surface of the pavement mat and using a pavement material mixed with gravel and a urethane binder on the lower surface, pavement mats having improved stability after pavement have begun to be manufactured. However, if such pavement mats and the like are manually molded one by one, it is not practical because the efficiency is inferior and the variation among products becomes too large.

The present invention provides a molding machine capable of automatically manufacturing a complicated molded product using two or more kinds of granular materials such as a paving mat and a paving block using different paving materials for the upper surface and the lower surface. The purpose is to do.

[0006]

Means for Solving the Problems The present invention provides (1) a movable mold having a cavity for molding a granular material into a predetermined shape, and (2) a cavity for the movable mold. A granular material molding machine comprising a granular material supply unit for supplying a predetermined amount of granular material, and (3) a pressing unit for pressing the granular material supplied to the cavity of the movable mold, The granular material supply unit is provided movably under the (a) hopper and (b) hopper, and has a shape substantially congruent with or slightly smaller than the planar shape of the movable mold cavity. And a bottom plate movably provided at the bottom of the cutout portion, and (c) a hopper and / or a means for moving the thickness plate. Regarding

Further, the above-mentioned granular material supply section and pressing section are provided in two.
The molding machine having the above is also included in the molding machine of the present invention.

[0008]

FIG. 1 shows the operating state of the molding machine of the present invention. The hopper 21 contains granular material such as rubber chip pavement material. When the thick plate 22 moves under the hopper 21, the cutout portion 221 is supplied with the granular material from the hopper 21, and the cutout portion 221 is filled with the granular material. The thickness plate 22 continues to move and moves to the upper part of the mold 10,
The cutout portion 221 stops at the position overlapping the cavity 101 of the mold 10. After the thickness plate 22 stops at the upper part of the mold 10, the bottom plate 222 moves, and the cutout portion 22 of the thickness plate 22 is moved.
The bottom of No. 1 is open, and the granular material in the cutout 221 is the mold 1
It drops into the cavity 101 of 0. Then, the pressing portion 30
Is lowered onto the cavity 101 of the mold 10 and the cavity 10
The granules in 1 are pressed and solidified. If necessary, the mold 10 is heated in this state to cure the granules, and then the compacted granules are taken out.

[0009]

EXAMPLES The present invention will be described below in more detail based on the illustrated examples, but the present invention is not limited to these examples. FIG. 1 shows the operating state of the molding machine of the present invention as described above. In FIG. 2, the mold 10 is a turntable 1.
An example of a molding machine mounted on the No. 1 is shown. FIG. 3 shows an example of a molding machine having two or more granular material supply parts 20 and pressing parts 30. In the figure, 10 is a mold, and 101 is a cavity provided in the mold 10. Reference numeral 20 is a granular material supply unit, 21 is a hopper, and 22 is a thick plate. Reference numeral 221 denotes a cutout portion provided on the thick plate 22, and 222 denotes a bottom plate. Reference numeral 30 is a pressing portion, 32 is a push plate, and 321 is an elevating means for elevating the push plate 32.

The mold 10 of the molding machine of the present invention, the granular material supply unit 2
0 and the pressing portion 30 have a planar size of 20
This will be described in detail below, taking as an example the case of making a molded product of about 40 cm.

The mold 10 is a mold for pressing a granular material into a predetermined shape such as a pavement mat, and subjecting it to a curing reaction or the like as required to form a molded article, which corresponds to these shapes. A cavity 101 is provided. The depth d of the cavity 101 can be appropriately changed depending on the shape of the molded product.
Usually, the range of 5 to 100 mm is preferable. Depth d is 5mm
If it is less than the range, it may be difficult to uniformly fill the granular material, while if the depth d exceeds 100 mm, the bottom of the granular material may not be sufficiently pressed. A particularly preferable range of the depth d is 10 to 50 mm.

There is no particular limitation on the material of the mold 10, but it is preferable that the particulate matter is not easily fixed. Specifically, metals such as aluminum, brass, and carbon steel are preferable, but various types of wood are also used. Also, polyethylene, polypropylene,
Synthetic resins such as ethylene / propylene copolymers, nylon and phenol resins are also preferably used. In particular, those obtained by reinforcing these synthetic resins with glass fiber or carbon fiber are preferable. As a moving means of the die 10, for example, as shown in FIG. 2, the die 10 can be moved by providing the die 10 on the turntable 11 and rotating the turntable 11.

The granular material supply unit 20 comprises a hopper 21, a thick plate 22, and means (not shown) for moving the hopper and / or the thick plate. Hopper 2
As shown in FIG.
This screw 211 is provided with two or more
The particles are evenly leveled by rotating the. When two or more screws 211 are provided, the adjacent screws may have the same spiral direction or opposite spiral directions. It is preferable that the adjacent screws rotate in opposite directions when they are in the same direction, and that the adjacent screws rotate in the same direction when they are in the opposite direction. It is preferable in order to evenly disperse the granular material therein. An opening 212 is provided on the bottom surface of the hopper 21. The granular material in the hopper is discharged from the opening 212 to the thick plate 22.
Is supplied to the cutout portion 221. The shape of the opening 212 is not particularly limited, but the width of the thickness plate 22 in the direction perpendicular to the moving direction needs to be larger than the width of the cutout portion 221 of the thickness plate 22.

Next, the thick plate 22 will be described. The thick plate 22 is attached to the hopper 21 or a pedestal (not shown) of the molding machine so that the upper surface of the thick plate 22 can move horizontally while being in contact with the bottom surface of the hopper 21. Then, when the cutout portion 221 provided on the thick plate 22 comes to a position overlapping the cavity portion 101 of the mold 10, the cutout portion 221 is stopped. As a mode in which the thick plate 22 is movably attached, for example, rails are attached to the hopper 21 or the frame of the molding machine, while wheels or rollers are attached to the thick plate 22 so that the wheels and the like travel on the rails. There is something to do. In addition, two rollers are attached to the hopper 21 and the frame of the molding machine.
You may make it attach more than one piece and move the thickness board 22 between them.

The thick plate 22 has a cutout portion 221 cut out into a shape that is substantially congruent or slightly smaller than the planar shape of the cavity 101 of the mold 10. Cutout 22
If 1 is too small, it becomes difficult to fill the granular material up to the end of the mold 10, and there is a problem that the granular material is not sufficiently pressed at the end of the mold 10. Therefore, “slightly smaller than congruence” means smaller than congruence and not so small that such a problem occurs. If the cutout portion is slightly smaller, the amount of solid particles scattered around the turntable 11 is significantly reduced, and the effect of preventing the device from being soiled is also produced. Such an effect remarkably appears when the end portion of the cutout portion 221 is smaller than the end surface of the mold 10 by 5 mm or more. However, if it is too small, the end portion of the die 10 is not sufficiently pressed. Therefore, the end portion of the cutout portion 221 is preferably smaller than the end surface of the die 10 by 25 mm or more. In particular, it is preferably not smaller than 20 mm.

A bottom plate 222 is attached to the lower surface of the thickness plate 22 so as to be horizontally movable while being in surface contact with the thickness plate 22. When the thick plate 22 is below the hopper 21, the thick plate 22 is located at a position where it closes the lower surface of the cutout portion 221, and together with the cutout portion 221, forms a space into which particulate matter enters. In this state, the thick plate 22 is attached to the hopper 21.
When it passes under, the granular material is supplied to the space formed by the cutout portion 221 and the bottom plate 222. Then, after the thickness plate 22 moves to a position where the cutout portion 221 and the cavity portion 101 of the mold 10 overlap, the bottom plate 222 moves horizontally, the lower surface of the cutout portion 221 opens, and the internal particulate matter is removed from the mold 10. It falls into the cavity 101.

The thickness t of the thick plate 22 is a factor that determines the supply amount of the granular material, and can be appropriately designed depending on the compression rate when changing from the granular material to a molded product. Therefore, as described above, when the cutout portion 221 of the thick plate 22 is smaller than the planar shape of the cavity portion 101 of the mold 10, the supply amount of the particulate matter is smaller than that in the case of congruence, and thus the thickness t is increased. It is necessary to supplement the supply amount by doing so.

The pressing portion 30 comprises a push plate 32 and an elevating means 321 for raising and lowering the push plate 32. The elevating means 321 lowers the push plate 32 so that the cavity 101 of the mold 10 is closed. The granules filled in are compacted. The planar shape of the push plate 32 is substantially the same as the planar shape of the cutout portion 221 of the thick plate 22, and is a shape that can pass through the cutout portion 221. When the cutout portion 221 is slightly smaller than the mold 10, the planar shape of the push plate 32 is also smaller than the mold 10. Even with such a slightly small push plate 32, the granular material can be spread out at the time of pressing and can be filled up to the end of the cavity 101 of the mold 10. In addition,
If necessary, the pressing plate 30 may be heated by a heater so that the granular material is heated and hardened at the same time as the pressing and hardening. An air cylinder or the like is preferably used as the elevating means 321.

By the way, when the bottom plate 222 is moved horizontally in order to drop the particles from the cutout portion 221 of the thick plate 22 into the cavity 101 of the mold 10, the particles are removed from the bottom plate 22.
Due to the friction with 2, it is easy to move together with the bottom plate 222, so that the bottom plate 222 is easily supplied into the cavity 101 in a state of being biased. If the granular material is pressed and solidified in such a state, the internal density of the molded product becomes uneven. Therefore, before the bottom plate 222 is horizontally moved to open the lower surface of the cutout portion 221, the granular material is lightly lightened by the pressing portion 30 in advance. It is preferable to press the particles so that the granular material does not move together with the bottom plate 222. Further, in this case, as shown in the side view of FIG. 4A and the bottom view of FIG.
If the toothed protrusions 322 of the geta are formed on the bottom surface of the base plate 222, the protrusions 322 extending in the direction perpendicular to the moving direction of the bottom plate 222, the movement of the particulate matter can be effectively prevented. The height h of the protrusion 322 can be adjusted according to the depth d of the cavity 101 of the mold 10,
Usually, it is 4 to 9 mm.

In the present invention, as shown in FIG. 3, a plurality of molds 10 are provided on the turntable 11 and the turntables are rotated to perform sequential molding, which is a point of production efficiency. Further, as shown in the figure, when the granular material supply 20 and the pressing portion 30 are two or more, the production efficiency is further improved.

[0021]

As described above, according to the present invention,
It is possible to automatically manufacture a complicated molded product using two or more kinds of granular materials, improve the production efficiency, and suppress the variation between products to be small. The present invention can also be used for molding a single type of granular material, or a molded product made of a granular material mixed with a liquid, as well as paving mats and paving blocks, as well as various Japanese sweets such as duck. It can also be suitably used for the production of biscuits, biscuits and the like.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an operating state of a molding machine according to the present invention.

FIG. 2 is an explanatory view showing an example of a molding machine in which a mold is placed on a turntable.

FIG. 3 is an explanatory view showing an example of a molding machine having two or more granular material supply parts and pressing parts.

FIG. 4 is an explanatory view showing a pressing portion in which a bottom surface of a pressing plate is provided with tooth-shaped projections of geta.

[Explanation of symbols]

 10 type 101 cavity part 11 turntable 20 granular material supply part 21 hopper 22 thick plate 211 screw 212 opening 221 cutout part 222 bottom plate 30 pressing part 32 pressing plate 321 lifting means 322 protrusion

Claims (2)

[Claims] 1. A movable mold having a cavity for molding a granular material into a predetermined shape, and (2) supplying a predetermined amount of the granular material to the cavity of the movable mold. A granular material molding machine comprising a granular material supply unit, and (3) a pressing unit that presses the granular material supplied to the cavity of the movable mold, wherein the granular material supply unit comprises: a) a hopper, (b) a movably provided under the hopper, and having a cutout portion having a shape that is substantially congruent or slightly smaller than the planar shape of the movable mold cavity, and A molding machine comprising a thick plate, a bottom plate of which is movably provided in the lower part of the section, and (c) a means for moving the hopper and / or the thick plate. 2. The molding machine according to claim 1, which has two or more granular material supplying portions and pressing portions.