JPH0741597Y2 - Rotary powder compression molding machine - Google Patents

Description

[Detailed description of the device]

[0001]

INVENTION The present invention relates to a cause to wear or the like of the rotation board
Prevents powder from scattering near the feed shoe
The present invention relates to a rotary powder compression molding machine made possible.

[0002]

2. Description of the Related Art Generally, in a rotary powder compression molding machine, a rotary disk surface is fixed in a process of filling powder in a die hole and compressing it with an upper punch and a lower punch to continuously produce molded articles. Connect with powder filling equipment such as a feed shoe via powder.
It continuously slides in contact with the feed shoe.
The powder remaining on the surface of the turntable at the site immediately after passing
The powder is scattered by centrifugal force .

Particularly, in such a molding machine, powder is used.
Due to the sliding contact with the existing feed shoe, etc.
It is easy to get continuous scratches on the surface in the direction of rotation. Such a wound
When the depth of the
The tendency to pass unreasonably through
After passing, the powder inside the wound is discharged to the outer peripheral direction by centrifugal force.
To be done. Therefore, the scattering of the powder described above is accelerated.

[0004] The in rotary board is likely to occur rust for powder contacts, sometimes to lead to trouble say this rust and enters into the powder contamination <br/>. Conventionally, in order to prevent such a situation, a SUS plate has been attached to the surface of the rotating disk, or chrome plating, Kanigen plating, or the like has been applied.

[0005]

[Problems to be Solved by the Invention] However, even in the case of the improved board surface by plating as described in the prior art , the rotary disk
The insufficient strength of the surface cannot be sufficiently improved, and there is a problem that inconveniences such as abrasion, scratches, and peeling of plating occur.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to further increase the hardness of the surface of the rotary disk where powder may constantly contact and wear. And scattering of powder due to abrasion and scratches
It is an object of the present invention to provide a rotary powder compression molding machine capable of effectively eliminating such a problem .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to increase the hardness of the surface by performing super-hard thermal spraying on the surface of a rotary disk where powder may constantly contact and wear. The present invention provides a rotary powder compression molding machine, characterized in that abrasion of the surface is prevented and powder scattering from the surface is prevented by polishing the surface to improve accuracy.

[0008] Then, in order to allow grinding a rotary board, the rotating disk, the rotating disk body constituting the rotary board, the rotary disc upper portion may be a three division structure of the rotating disk bottom.

Further, in order to make polishing and replacement of the rotary disk surface easier, it is preferable to use a rotary disk which is detachably equipped with a contact plate constituting the rotary disk surface.

[0010]

[Function] The hardness of the surface of the rotating disk sprayed with super-hard metal is increased, so it is not easily abraded by ordinary powder, and it is easy to wear in the direction of rotation.
Hard to get scratched . The precision of the surface of the rotary disk after spraying is increased by polishing the surface of the rotary disk, and the powder does not adhere to the surface . for that reason,
Combined with the fact that the turntable surface is not easily scratched,
It is possible to effectively prevent the dispersion .

A rotating disc body, on which a mortar is arranged,
If you have a three-part structure with the upper part of the turntable into which the upper punch is inserted and the lower part of the turntable into which the lower punch is inserted, set only the turntable body to the machine tool and polish the turntable surface. It becomes possible and polishing work becomes easy. Also, if the turntable surface is formed on the contact plate and only this contact plate is attachable to and detachable from other components of the turntable, only this contact plate is removed and the turntable surface is polished by the machine tool. It becomes possible to replace it with a new plate. Therefore, it becomes possible to carry out polishing, replacement, etc. of the surface of the rotary disk without involving extensive disassembly and assembly of the rotary disk.

[0012]

EXAMPLES Examples will be described with reference to the drawings. 1 and 2, Ru essential part longitudinal cross sectional view showing an embodiment of a rotary powder compression molding machine of the present invention. This rotary powder compression molding machine
Is a rotary disk 1 which makes the same rotary motion about a rotary shaft (not shown), a plurality of dies 2 arranged at equal intervals on the circumference of the rotary disk 1, and a mortar hole 3 of the mortar 2. It is provided with an upper punch 4 and a lower punch 5 whose tip portions are slidably fitted and inserted.
It

The turntable 1 is usually of a separator type with the upper part 6 of the turntable. In the embodiment of FIG. 1, the turntable 1
Is divided into three parts, that is , a turntable body 1a constituting the turntable surface 1b, a turntable upper portion 6 and a turntable lower portion 7. By dividing into three in this way, the surface hardness HV1200
The rotary disk surface 1b of the rotary disk 1 which has been sprayed to a degree with super hard spraying can be polished.

In the embodiment of FIG. 2, another contact plate 8 is attached to the turntable 1.
It is a structure which can obtain the same effect as the above by attaching. That is, the contact plate 8 is the rotating disk body 1a.
Which forms a part of the flat surface of the rotating table 1c
It is mounted so as to be attachable and detachable using a bolt 1d on the top. Thus, in this embodiment, the upper surface of the contact plate 8 is the turntable surface 1b in contact with the powder,
The turntable surface 1b is subjected to super-hard thermal spraying and polishing treatment. 1 and 2, 9 is a feed shoe base, 10 is a feed shoe, and 11 is a feed shoe seal. If the rotary disk surface 1b is subjected to super-hard thermal spraying and is subjected to a polishing treatment, the wear resistance of the rotary disk surface 1b is greatly improved. For example, non-abrasive crude drug powder particles such as lactose and starch. When handling powder, theoretically, a life of 10 years or more can be secured, and in the case of powdered or granular powder such as cellulose or calcium, a life of about 5 years can be obtained. Further, even when handling powder particles such as alumina, ceramics, and ferrite, the operation can be continued without re-polishing for about one year. In addition, when handling powders of a grindstone, cemented carbide, epoxy, etc., even if cemented carbide is sprayed on the rotary disk surface 1c, only continuous operation for about 2 to 3 months can be performed. In such a case, as in the embodiment of FIG.
If the contact plate 8 forming b is attached and detached, it becomes easy to deal with it. That is, if the upper surface of the contact plate 8 is set as the rotary plate surface 1b, it is possible to remove only the contact plate 8 and re-polish the surface 1b, or to replace it with a new rotary plate 1, and the rotary plate 1 as a whole. It is possible to significantly reduce the number of man-hours as compared with the case where the above is removed from the molding machine to cope with the problem. In particular, if the contact plate 8 is divided into three parts or the like, it is possible to perform the detaching work and the attaching work without requiring a large space in the periphery. Even if the abutting plate 8 is divided, if the current standard machine tool precision and assembling technology are used, a gap or a step that causes powder to enter and scatter will occur on the divided surface. Is easy to prevent.

[0015]

Since the present invention is configured as described above, it has the following effects. In other words, it is configured so that the hardness of the surface is increased by performing super-hard thermal spraying on the surface of the turntable where the powder always comes into contact and wear, and the surface after spraying is polished to increase the accuracy. It is possible to prevent abrasion of the board surface and to prevent powder from scattering from the surface of the rotating disk.

When the rotary disk has a three-part structure of the rotary disk body , the rotary disk upper portion, and the rotary disk lower portion, the rotary disk surface can be easily polished.

When the contact plate constituting the rotary disk surface is attached and detached, the surface of the contact plate, that is, the rotary disk surface can be easily polished in the same manner as described above.
If the plate is damaged, it can be replaced with a new one.

[0018]

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of a rotary powder compression molding machine of the present invention.

FIG. 2 is a longitudinal sectional view of an essential part showing another embodiment of the rotary powder compression molding machine of the present invention.

[Explanation of symbols]

1 rotary disk 1a rotary disk main body 1b rotary disk surface 1c mounting surface 1d bolt 2 mortar 3 mortar hole 4 upper pestle 5 lower pestle 6 upper rotary disk 7 lower rotary disk 8 plate 9 feed shoe base 10 feed shoe 11 feed shoe seal

Claims (3)

[Scope of utility model registration request] 1. A hard disk is sprayed on the surface of a rotary disk where powder may constantly contact and wear to increase the hardness of the surface.
A rotary powder compression molding machine, characterized in that the surface after spraying is polished to increase the accuracy, thereby preventing abrasion of the surface and scattering of powder from the surface. 2. The rotating plate has a three-part structure of a rotating plate body, an upper part of the rotating plate, and a lower part of the rotating plate which constitute the rotating plate surface so that the rotating plate surface can be polished. Rotary powder compression molding machine. 3. A turntable is provided with a contact plate constituting a turntable surface that can be attached and detached, and the hardness of the surface is increased by performing super-hard thermal spraying on the turntable surface where powder may constantly contact and wear. In addition, the rotary powder compression molding machine is characterized in that the surface after the thermal spraying is polished to increase the accuracy to prevent the surface from being worn and the powder from scattering from the surface.