JP2003088995A - Method and device for forming powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for forming the powder in which the thickness of a formed article is approximately fixed, the depth of a charger is not adjusted so often, and if the forming accuracy higher than that of a refractory brick is not required, the forming speed is improved, and the height of the forming device can be minimized. SOLUTION: A cavity block (7) with a cavity (7a) penetrated therethrough below a press (10), and a lower plate (11) therebelow are disposed movably in the horizontal direction, a bottom part of the cavity (7a) of the cavity block is located below a hopper (8) continuous to the press (10) while closing the lower plate (11), a raw material is thrown therein. The cavity block and the lower plate are moved below the press (10), the raw material is compressed in the cavity (7a) by the press (10), the lower plate (11) is retracted and a formed article (15) in the cavity (7a) is taken out below.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder for molding architectural bricks, blocks, bricks of various powders, or moldings of dust-collected powder, incinerated ash, waste soil, etc. The present invention relates to a body forming method and an apparatus thereof.

[0002]

2. Description of the Related Art In a conventional powder molding apparatus, as shown in FIG. 5, a mold 5 having a cavity 3 into which a raw material mixture is charged and pressure-molded is formed in a downward direction. An upper press 4 having an operating plunger is provided, and a hopper 1 for storing a blended raw material is juxtaposed, and a charger 2 is provided from below the hopper 1 to a cavity 3
It is configured to convey the raw material therein.

Then, when pressure molding is performed in the cavity 3 by the press 4, the mold 5 is pulled down by the extraction cylinder 6, the molded product is extracted and conveyed onto the conveyor 16 by a picker (not shown). , Is configured to be taken out of the molding apparatus.

Conventionally, in such a molding apparatus mainly used for molding refractory bricks, as shown in the drawing, the molding is compression molded between the upper press 4 and the fixed lower plunger 24, The mold 5 is in a floating state and is convenient, but its structure is large.

That is, the charger 2 is arranged above the vertically moving mold 5 so as to operate in the horizontal direction. Therefore, when the charger 2 is below the upper press 4, the charger 2 and the upper press 4 are operated. It requires a lot of space between the bottom surface of the plunger. Therefore, an excessively large press delight is required for forming a blended raw material in which the required stroke of the upper press 4 is large, and in particular, a large amount of fine powder having a large compression ratio (ratio between the raw material filling depth and the thickness of the molded product) is contained. To do.

On the other hand, the thickness of the molded product is almost fixed,
For the case of the molding of blocks and bricks where the depth of the charger is not adjusted so much and the molding accuracy is not as high as that of refractory bricks, the molding speed should be improved, for example, 20 to 30 pieces / cycle, the molding pressure should be 200. ~ 300k
There has been a demand for a device for minimizing the idle time when the cycle time is about 20 to 30 seconds at gf / cm ² and for minimizing the height of the molding apparatus.

[0007]

Therefore, according to the present invention, the molding speed is improved as compared with the case where the molding accuracy is almost fixed and the depth of the charger is not adjusted so much and the molding accuracy is not required as much as the refractory brick. In addition, it is an object of the present invention to provide a powder molding method and a powder molding method capable of minimizing the height of the molding apparatus.

[0008]

According to the powder molding method of the present invention, in the powder molding method in which a powdery raw material is put into a molding cavity and compression molded by a press, A cavity block having a cavity formed through the lower part of the press and a lower plate at the lower position of the cavity block are movably arranged in the horizontal direction, respectively, and the cavity plate of the cavity block is closed by the lower plate. The raw material is put in under the hopper arranged in parallel in the press, the cavity block and the lower plate are moved together under the press, compression molding is performed in the cavity by the press, and the lower plate is retracted. And take out the molded product in the cavity downward.

Further, according to the powder molding apparatus of the present invention, in the powder molding apparatus in which the powdery raw material is put into the molding cavity and compression-molded by the press, the powder is pressed below the erected press. A cavity block penetrating a cavity and a lower plate below the cavity block are arranged movably in the horizontal direction, and a hopper for arranging the raw material is provided in parallel with the press to install the cavity block. The cavity moves from the lower position of the hopper to the lower position of the press together with the lower plate, compression molding is performed in the cavity by the press, and the lower plate is retracted to take out the molded product in the cavity downward. Is configured.

According to this structure, the lower plate closes the bottom of the cavity to receive the raw material mixture from the hopper,
When the bottom of the cavity is closed, it moves to the lower position of the press, and when it returns to the origin after molding, there is no raw material left, so there is no spill of raw material, and there is almost no wear on the sliding surface. Does not happen.

Further, since the cavity block does not move up and down, unnecessary strokes and unnecessary driving are omitted.
It is possible to reliably and quickly process powder molding in the fastest press cycle. Then, by making the gap between the main frame and the cavity block as small as possible, the overall height of the entire device can be made low in combination with the reduction in stroke.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. In FIG. 1, a press 10 having a plunger actuated downward is suspended above the main frame 9 which is erected.
On the table 9a which is below 0 and constitutes a part of the main frame 9, a lower plate 11 and a cavity block 7 having a molding cavity 7a penetratingly formed thereon are horizontally arranged. Are movably installed in each.

Then, along the side surface of the main frame 9,
A hopper 8 provided with a shutter 21 that opens and closes by the operation of a shutter cylinder 22 is arranged in parallel at the lower end, and the lower plate 11 and the cavity block 7 are respectively provided between the lower position of the hopper 8 and the lower position of the press 10. It is configured to move in the horizontal direction by the operation of the drive actuators 13 and 12.

A projection 18 is provided at the tip of the cavity block 7 so as to project downward, and the lower plate is moved from the lower position of the hopper 8 to the lower position of the press 10 as described later. 11 pushes the convex portion 18 to move under the initiative of the lower plate 11.

Further, as shown in FIGS. 3 and 4, the table 9a of the main frame is provided with a through hole 14 immediately below the press 10, and a conveyor 16 is provided below the through hole 14.
The molded product 15 formed by arranging is taken out through the through hole 14 and carried out of the apparatus by the conveyor 16.

Next, an aspect of the molding method by the present molding apparatus will be described. First, as shown in FIG. 1, the lower plate 11 and the cavity block 7 are positioned below the hopper 8, the shutter 21 is opened, and a predetermined amount of the powdered raw material mixture is introduced from the hopper 8 into the cavity 7a. It is thrown in.

Then, as shown in FIG. 2, the lower plate 11 mainly moves to a position below the press 10. On this occasion,
Since the lower plate 11 pushes the convex portion 18 at the tip of the cavity block 7 and moves with the cavity block 7 placed, the cavity 7a is in a state in which its bottom is closed by the lower plate 11. The mixed raw materials inside are conveyed without spilling.

In this way, the cavity 7a is pressed by the press 10.
The raw material is moved to the lower position, and the raw material for mixing therein is compression-molded between the plunger and the lower plate by the operation of the press 10 from above.

Next, as shown in FIG. 3, the lower plate 1
1 is retracted, the through hole 14 of the table 7a is opened, and the press 10 slightly presses downward to drop the molded product 15 onto the conveyor 16. After that, the press 10 rises, the cavity block 7 retracts, and returns to the state of FIG. 1 to complete one cycle.

In this molding method, when the cavity block 7 rides on the lower plate 11 to receive the mixed raw material from the hopper 8 and moves to the position below the press 10, the lower surface of the cavity block 7 and the upper surface of the lower plate 11 are mutually The bottom of the cavity 7a is blocked by contact, and when returning to the origin after molding, there is no raw material remaining, so there is no spill of raw material, and there is almost no wear on the sliding surface. In addition, the hopper 8 has a shutter 21
Is attached to prevent the raw material from spilling on the upper surface of the cavity block 7.

Further, since the cavity block 7 does not move up and down, unnecessary strokes and unnecessary driving are omitted, and powder molding can be performed reliably and at the fastest press cycle. Tea block 7
The overall height of the entire device can be made low by making the gap between and as small as possible.

[0022]

The present invention is configured as described above, and has the following operational effects. (1) Since the cavity block moves in the horizontal direction and plays the role of a conventional charger, the overall height of the apparatus can be reduced by the amount of the charger, including the reduction of the stroke of the press. (2) Since the cavity block does not move up and down, unnecessary strokes and unnecessary driving are omitted, and powder molding can be performed reliably and in the fastest press cycle. (3) When the bottom of the cavity is closed, it moves to the bottom of the press, and when it returns to the origin after molding, there is no raw material left, so there is no spill of raw material, and there is no wear on the sliding surface. It hardly happens. (4) A molding method and apparatus suitable for molding a molded product made of dust collection powder, incinerated ash, waste soil, etc. as a raw material, which does not have a large thickness and does not require a high molding accuracy.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is a partial side sectional view showing a molded state of the embodiment of FIG.

FIG. 3 is a partial side sectional view showing a state where a molded product according to the embodiment of FIG. 1 is taken out.

FIG. 4 is a sectional view taken along line XX of FIG.

FIG. 5 is a side sectional view showing a molding apparatus used for conventional refractory brick molding.

[Explanation of symbols]

7 ... Cavity block 8 ... Hopper 9: Main frame 10 ... Press 11 ... Lower plate 12, 13 ... Drive actuator 14 ... Through hole 15: Molded product 16 ... Conveyor 18 ... convex part

Continued front page    F term (reference) 4G054 AA00 AC02 AC04 AC10 BA12                       BA33                 4G055 AA00 AB01 AC01 AC05 CA02                       CA08 CB17

Claims (2)

[Claims] 1. A powder molding method in which a powdery raw material is put into a molding cavity and compression-molded by a press, wherein a cavity block is formed by penetrating a cavity below the upright press. A lower plate and a lower plate are respectively arranged horizontally below the lower plate, and the bottom of the cavity of the cavity block is located below the hoppers juxtaposed to the press with the lower plate closed. And moving the cavity block and the lower plate together under the press to perform compression molding in the cavity by the press, retract the lower plate and take out the molded product inside the cavity. Powder molding method. 2. A powder molding apparatus in which a powdery raw material is charged into a molding cavity and compression-molded by a press, and a cavity block having a cavity penetrating below the upright press. A lower plate and a lower plate are movably arranged in the lower position, respectively, and a hopper is provided in parallel with the press to feed the raw material, and the cavity block is formed from the lower position of the hopper to the press of the cavity block. The powder is characterized in that it moves to the lower position of the lower plate together with the lower plate, compression molding is performed in the cavity by a press, and the lower plate is retracted to take out the molded product in the cavity downward. Body shaping equipment.