JP2000326317A - Stock feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stock feeding device, by which no segregation of stock develops. SOLUTION: This device is composed of a rotatable agitating blade 18 provided on the bottom part of a cylindrical drum 16, a feeding-out device 22 mounted at the outlet of stock provided on the bottom part of the drum 16, and a changer table 13, the height of which is fixed and on which the drum 16 is fixed. As a result, separation between coarse particles and fine particle during the feeding process of a stock, or so-called segregation does not develop and a homogeneous composition is realized, and the quality of a product can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raw material supply device having an upper plunger and a metal frame holder fixed to a main body, and a charging table mounted on a brick press device in which a height of a charger table is fixed by a stand.

[0002]

2. Description of the Related Art A floating mold type hydraulic press having plungers on the upper and lower sides and floatingly supporting a metal frame and a metal frame holder is known, and an example thereof is shown in FIG.

[0003] In Fig. 8, a floating mold type hydraulic press generally designated by the reference character A is composed of an upper frame Fu and a lower frame Fd. The upper frame Fu is provided with an upper plunger 4, and the lower frame Fd is provided with a lower plunger. 34 are provided. The metal frame 6 for molding supports a metal frame holder 5, and the metal frame holder 5 is floating supported by a floating cylinder C1 provided on the lower frame Fd. The metal frame holder 5 is provided with a charger table 13 integrally formed with the metal frame holder 5 on the left side of the drawing. On this charger table 13, a rotary charger device 19 is mounted in the cylinder C2 in the left-right direction of the drawing. It is provided movably. As the rotary charger 19, for example, the one described in Japanese Patent Application No. 10-205014 by the present applicant can be used.

To supply the raw material to the charger 19, the raw material is put into a hopper 36a of a raw material supply device 36,
Conveyed from the lower part of the hopper 36a by the conveyor 36b,
The operation is performed by opening and closing the cut gate 38.

At this time, since the charger table 13 moves up and down together with the metal frame 6, the charger device 19 for supplying the raw material to the metal frame 6 also moves up and down. Therefore, it is usually about 700 mm apart from the raw material supply device 36 that supplies the raw material to the charger device 19, and the bellows 37 and the cut gate 38 are also interposed, so that the raw material can be uniformly supplied to the charger device 19. Was difficult.

Therefore, the applicant of the present application has previously filed Japanese Patent Application No. Hei 10-1.
No. 71496 proposes a brick press apparatus in which a metal frame holder and a charger table are fixed and do not move up and down, and there are few steps of falling of raw materials.

For better understanding of the present invention, an outline of the proposed brick press apparatus will be described with reference to FIG.
Parts corresponding to those in FIG. 8 are denoted by the same reference numerals.

In FIG. 9, a charger table 13 is supported by a stand S and does not move up and down. Gold frame 6
Is a cylinder C3 having a short stroke inside the metal frame holder 5.
When the metal frame 6 is pressurized by the upper plunger 4, by performing the minimum necessary floating operation, it is possible to give a pressurizing effect of up and down to the pressurized powder. After the pressurizing operation is completed, the lower plunger 34 is pushed up by the extraction cylinder C4 to extract the molded product.

In this case, since the charger table 13 does not move up and down, the bellows 37 becomes unnecessary as in the example of FIG. Each of these brick forming hydraulic presses is effective in itself, and a uniform molded product can be obtained.

[0010]

2. Description of the Related Art It is known that when powder is supplied, a phenomenon called segregation in which coarse particles and fine particles are separated occurs, and this problem is caused by the stirring method shown in FIGS. Is considerably improved by the rotary charger 19 of FIG.

However, since there is a dropping point at the time of supplying the powdery raw material, when the raw material F is supplied to the hopper H as shown in FIG. 10, for example, as shown in FIG. It falls first, causing a so-called rat hole R, which results in non-uniformity.

That is, before charging the raw material into the hopper,
Even when kneading with a mixer, a continuous and uniform compounded raw material is not always supplied depending on the composition of the particle size of the raw material, and therefore, the bulk density and the amount of the binder of the raw material change. Therefore, conventionally, the bulk density was measured in a hopper, or a sensor for the degree of binder content was attached to prevent variance.

However, even in this case, there is no effect when there is a variation depending on the position in the hopper.

[0014]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a raw material supply apparatus capable of supplying a more uniform powdery raw material.

Another object of the present invention is to provide a raw material supply apparatus capable of forming a high-precision brick.

[0016]

According to the present invention, there is provided a raw material supply apparatus which is mounted on a brick press apparatus having an upper plunger and a metal frame holder fixed to a main body and having a fixed height of a charger table. , A cylindrical main body is provided on the charger table, a stirring blade is rotatably provided inside a bottom of the main body, and a raw material is supplied to a charger for supplying a raw material to a metal frame outside the bottom. Is provided, and driving means for driving the stirring blade is provided.

[0017]

FIG. 1 is a side view showing an embodiment of the present invention. An upper cylinder 3 is attached to an upper portion 2a of a main body 2 of a brick press 1, and an upper plunger 4 is attached to the cylinder 3. Are slidably mounted.

A metal frame holder 5 for supporting a metal frame 6 is fixed to the main body 2. A short stroke cylinder 7 (not shown in detail) is mounted on the metal frame holder 5. Step 5a of the metal frame 6 is engaged with the step 6a of the metal frame 6 by the short stroke cylinder 7.

A charger table 13 is fixed to the metal frame holder 5 so that an upper surface thereof is flush with the upper surface. A stand 11 for supporting the table 13 is attached to the charger table 13. A rotary charger 19 is slidably provided on the charger table 13, and the rotary charger 19 has a cylinder 2 for moving the charger 19 on the table.
Four rods 25 are connected.

Further, on the upper surface of the charge table 13, a bottom of a drum 16 which is a main body of a cylindrical raw material supply device is mounted via a base 27, and a mixing container 15 is mounted on an upper end of the drum 16. Is fixed, and a shutter 15a is attached to the bottom so as to be freely opened and closed.

At the bottom of the drum 16, a delivery device 22 for delivering the raw material to the rotary charger 19 and a discharge port 30 are provided.
As shown in FIGS. 2 and 3, the delivery device 22 has a cylindrical main body 22 (symbol is shared with the delivery device), a shaft 31, and an arm 32 attached to the shaft 31.
blade 32 and supply port 3 mounted via
3 and a screw conveyor 34 provided at the outlet 3. The outlet 35 is located above the resident position of the rotary charger 19. Here, reference numeral 34a denotes a screw conveyor shaft, 34b denotes a screw, 30a denotes a cylinder, 30b denotes a shutter of a discharge port, M denotes a motor, and G denotes a raw material.

The operation will be described below. The raw material is supplied to the blending container 15 by a conveyor or the like (not shown), and when an appropriate amount of the drum 16 is supplied, the shutter 15a is closed.

When the press starts operating, first,
The stirring blades 32 in the drum are driven by a motor M to stir the raw materials in the drum to make them uniform, and the motor M of a screw conveyor 34 provided in a supply port 33 is driven to send the raw materials to the rotary charger 19. . When the required amount is supplied, the conveyor is stopped, the rotary charger 19 is moved toward the metal frame 6 by the cylinder 24, and the material is supplied to the metal frame 6 to return to the resident position, where the material for the next stroke is supplied.

At the same time, when the raw material of the metal frame 6 is formed by the upper plunger 4 and the product is extruded from the metal frame 6 by the extraction plunger 8, the next raw material is rotated.
Is supplied to the metal frame 6. Hereinafter, products are continuously formed by repeating the same steps.
Moves only horizontally, and there is no movement of the drum.
, And supplied in a stable blended state, thus stabilizing the quality of the product.

FIGS. 4 and 5 show another embodiment of the present invention, which is the same as the first embodiment, except for a rotary type feeder 37 for supplying a raw material to the rotary charger 19 from an outlet 33 of the feeder 22. The rotary type feeder 37 has a plurality of rotor blades 36a inside a cylindrical main body 37a.
Are rotatably provided, and the rotor blades 36a are configured to send the raw material to the rotary charger 19, and the operation and effect are the same.

FIGS. 6 and 7 show another embodiment of the present invention, in which means for supplying raw materials to the rotary charger 19 from the outlet 33 of the delivery device 22 uses a conventionally known belt conveyor 39. Other than the above, the second embodiment is the same as the first embodiment, and has the same operation and effect, but has an advantage that it can be obtained at low cost. In the above embodiment, the rotary charger 19 according to the proposal of the present applicant is used as the charger for supplying the raw material to the metal frame 6, but the present invention is not limited to this. They may be combined.

[0027]

According to the present invention, the composition is uniform as described above, and the quality of the product is improved because the composition is homogeneous without separation of coarse particles and fine particles during the raw material supply process, so-called segregation does not occur.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a press using an original amount supply device according to an embodiment of the present invention.

FIG. 2 is a side view showing a main part of FIG. 1;

FIG. 3 is a plan view showing a main part of FIG. 2;

FIG. 4 is a side view showing another embodiment of the present invention.

FIG. 5 is a plan view showing a main part of FIG. 4;

FIG. 6 is a side view showing another embodiment of the present invention.

FIG. 7 is a plan view showing a main part of FIG. 6;

FIG. 8 is an explanatory view showing an example of a conventional brick press.

FIG. 9 is an explanatory view of another example of the brick press.

FIG. 10 is an explanatory view showing a place where powder is put into a hopper.

FIG. 11 is an explanatory diagram when powder is discharged from the hopper of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Main body 3 ... Upper cylinder 4 ... Upper plunger 5 ... Metal frame holder 6 ... Metal frame 8 ... Extraction plunger 15 ... Mixing container 16 ... Drum 18 ... Stirring blade 19 ... Rotary charger 22 ... Delivery device 34 ... Screw conveyor 37 ... Rotary type feeder 39 ... Belt conveyor

Claims (1)

[Claims] 1. A raw material supply device comprising an upper plunger and a metal frame holder fixed to a main body, wherein the main body having a cylindrical shape is mounted on a brick press apparatus having a fixed height of a charger table. Provided on the charger table, a stirring blade is rotatably provided inside the bottom of the main body, and supply means for supplying a raw material to a charger for supplying a raw material to a metal frame is provided outside the bottom of the stirring blade. A raw material supply device comprising a driving means for driving a stirring blade.