JPS63248416A - Device for recovering metal fine powder - Google Patents

Abstract

PURPOSE:To obtain a lightweight device suitable for recovering metal powder in maching and having a low construction cost by providing a cover part attached with filters to an enclosure consisting of a bottom part and a wall part, and further covering the cover part with another cover part. CONSTITUTION:The recovering device for metal powder consists of the enclosure 1, a 1st cover part 2 and a 2nd cover part 3. A draft opening 4 is provided in order to adsorb the air mixed with metal powder. At least one filter 5 is furnished to the 1st cover part. The consistency of the filter 5 is varied according to the kind of metal powder to be recovered. The 1st cover part 2 is covered by the 2nd cover part 3 of funnel shape provided with an air discharge opening 31. As a suction motor and a fan are separated from the ordinary dust collector as described above, a compact lightweighted recovery device for metal powder is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a metal fine powder recovery device that efficiently recovers cutting powder of cemented carbide and the like.

[Conventional technology]

Generally, in powder metallurgy, when molding a product with a complicated shape, a method is adopted in which metal powder is pressed and sintered in nine stages, and then this is cut. However, according to this method, a large amount of cutting powder is generated during molding of the intermediate sintered body. In order to improve production costs, it is important to efficiently collect this cutting powder and reuse it as raw material metal powder. Furthermore, in the case of products made of cemented carbide, for example, there are dozens of types of metal powders that serve as raw materials, so it is necessary to separate and collect the cutting powder generated during molding by type.

For this reason, conventionally, cutting powder was collected using a cyclone or a filtration type dust collector every time the molding process was completed. A cyclone is a device that swirls air or other fluid to separate metal powder using centrifugal force.A filter dust collector uses a built-in suction motor to draw in air mixed with metal powder, and it is shaped into a plate or spiral shape. After filtering with a filter.

A built-in fan exhausts the air to the outside.

[Problem that the invention seeks to solve]

However, the cyclone has the disadvantage that it has a high specific gravity such as cemented carbide and has a poor recovery rate for fine particles of about 1 to 4 barons. Furthermore, in the case of a filtration type dust collector, since an intake motor and a fan are built-in, if the collection rate is to be increased, the dust collector becomes large and heavy, which requires a large space and is difficult to move. Furthermore, both of them are generally expensive, and one machine requires repeated collection and cleaning after each processing process, resulting in a significant decrease in work efficiency. This is particularly noticeable when processing dozens of types of cemented carbide or when using machines with complex internal structures that are difficult to clean, and has become a common problem in the field of cemented carbide manufacturing.

SUMMARY OF THE INVENTION In view of the above drawbacks and problems, it is an object of the present invention to provide a metal powder unrecovered device that is lightweight and inexpensive to manufacture, suitable for collecting cutting powder of cemented carbide and the like.

[Failure to solve the problem]

According to the present invention, the bottom portion and the outer edge of the bottom portion extend upwardly from the outer edge of the bottom portion;
a casing having a wall portion having a vent in which an opening is formed; a first lid portion that seals the opening of the casing in an openable and closable manner;
A metal fine powder recovery device is obtained, which has a second lid part that covers the first lid part, and at least one filter is attached to the first lid part.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the metal powder uncollected device according to the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the metal powder uncollected device according to the present embodiment includes a housing 1, a first lid part 2, and a second lid part 3. The housing 1 is, for example, a general-purpose stainless steel can with the upper bottom opened. Hard plastic may be processed and used. Ventilation holes 4 are provided at arbitrary locations on the wall of the housing 1.
is provided. This is for sucking air mixed with metal powder into the housing 1, and is formed by at least one hole and a protrusion 41 for connection with an intake hose (not shown). The housing 1 is sealed with a first lid part 2.

The first lid part 2 uses, for example, a plate that can be opened and closed and has the same area as the opening surface of the housing 1. Although the material of the plate does not matter, stainless steel plates, wooden plates, etc. are preferable from the viewpoint of workability and weight reduction. At least one filter 5 is attached to the first lid.

The filter 5 is composed of, for example, a paper membrane or encapsulated fine particles that are airtight enough to prevent metal powder from passing through. According to the experiment of this example, in the case of cemented carbide cutting powder, a cylindrical radial filter as shown in FIG. 3 was used in the first lid part.

It is better to have 3 installed. The number of filters 5 to be attached and the airtightness of the filters 5 can be changed arbitrarily depending on the type of metal powder to be collected.

The first lid part 2 is covered with a funnel-shaped second lid part 3, as shown in FIGS. 1 and 2.

The funnel shape is used to smoothly discharge the air filtered by the filter 5 to the outside from the exhaust port 31. Therefore, as long as the shape has the exhaust port 31, it is not limited to a funnel shape. In addition, the material is preferably a stainless steel plate from the viewpoint of workability and weight reduction. The first lid part 2 and the second lid part 3 are fixed to the housing 1 by a detachable attachment member 6. For example, a band is used as the attachment member 6. Incidentally, casters 7 are provided on the external bottom surface of the housing 1.
is installed.

Next, a method of using the metal powder unrecovered device according to this embodiment will be explained.

(1) First, an intake motor (not shown) is connected to the exhaust port 311C of the second lid 3, and a dust collection hose (also not shown) is connected to the vent protrusion 41 of the housing 1. ■ When the intake motor is operated, air mixed with metal powder is sucked into the housing 1 through the dust collection hose through the vent 4, filtered by the filter 5, and then passed through the exhaust port 31 of the second lid 3. is discharged to the intake motor. At this time, metal powder is accumulated on the inner bottom surface of the casing 1. (2) After the intake is finished, the attachment member 6 is attached and detached, the second lid 3 is opened, and the first lid 2 or the inside of the filter 5 is struck to cause the metal powder attached to the filter 5 to fall.

(2) After removing the filter 5 body or the first lid 2 and removing the metal powder adhering to the wall of the casing 1, turn the casing 1 upside down and collect the metal powder.

As described above, according to the ninth embodiment, since the intake motor and fan are separated from the conventional dust collector, it is possible to realize a metal powder uncollected device that is small, lightweight, and easy to clean. In addition, for example, since a cylindrical radial filter is used, air circulation is smoother than in a conventional dust collector using a plate-shaped filter, and the intake air force can be improved. On the other hand, since the first and second lids are provided to improve airtightness, dust does not leak outside, and the working environment is improved. Furthermore, commercially available casings and filters can be used, and the casing in particular can be made from waste, which reduces manufacturing costs. Therefore.

When collecting cutting powder from dozens of types of cemented carbide, it is possible to mass-produce the collection device according to this embodiment in a number corresponding to each type and replace it with other devices, thereby reducing the amount of time required for conventional cleaning. This saves time and significantly improves work ability. As mentioned above, since it is small and lightweight, it is easy to store. In addition, the casters attached to the external bottom of the casing make it easy to adjust the amount.

〔effect〕

As described above, according to the present invention, it is possible to provide a metal powder unrecovered device that is lightweight and inexpensive to manufacture, suitable for collecting cutting powder of cemented carbide and the like.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a metal powder uncollected device according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a sectional view of a cylindrical radial filter used in nine embodiments. 1: Housing, 2: First lid part (filter mounting plate). 3: second lid part, 31: discharge port, 4: ventilation port. 5: Filter (cylindrical radial filter), 6: Mounting member,
7: Caster.

Claims (2)

[Claims] (1) A casing having a bottom and a wall extending upward from the outer edge of the bottom and having a vent forming an opening, and a first lid that opens and closes the opening of the casing. and a second lid part that covers the first lid part, and at least one filter is attached to the first lid part. (2) A fine metal powder recovery device according to claim (1), characterized in that casters are provided on the external bottom surface of the casing.