JP3469871B2 - Spherical powder sorter - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an apparatus for selecting a spherical powder having a particle diameter of 125 μm to 3 mm from a powder which is an aggregate of particles, and more specifically, it efficiently combines a slant plate and a vibrator to efficiently select the spherical powder. The present invention relates to a device that can reliably select spherical powder.

[0002]

2. Description of the Related Art As a method of tumbling particles using an inclined plate to select spherical objects, a belt conveyor is operated by inclining the belt conveyor at a right angle to the traveling direction, and the spherical objects are moved according to the moving distance of the powder. Selection method (Japanese Patent Laid-Open No. 7-100436)
No.), a sorting plate installed in a slanting state with a predetermined gradient, and a non-spherical sorting device (patent No. 25556766) having a vibrator for moving the non-spherical subject up the sorting plate in a slope direction. ing.

However, when these methods and devices for selecting spherical particles are applied to powder, the powder which is an aggregate of particles is regarded as non-spherical when the spherical powders are bound to each other, or non-spherical. When particles are selected by sticking to spherical particles, they are considered to be spherical particles, and there is a drawback that only accurate selection can be performed.

As a result of studying the drawbacks of these conventional spherical object sorting apparatuses, when applied to spherical powder, non-spherical particles do not exist in the direction in which the spherical powder rolls down, or the existence probability thereof is small, and The present invention has been completed based on the idea that spherical powder can be accurately selected if the powder particles are individually separated.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a device capable of reliably selecting spherical powders by specifying the vibration direction so that the powder particles are less likely to jump and the individual powder particles are reliably separated. Is to provide.

[0006]

DISCLOSURE OF THE INVENTION The present invention is a spherical powder sorting apparatus using an inclined plate, wherein a flat plate (2) having an XY plane and inclined in the X direction is a base (1). ) On the anti-vibration mechanism
The powder supply mechanism (5) for supplying powder onto the flat plate (2) is provided on the upside of the flat plate (2) in the X direction on one side in the Y direction. Is provided with the flat plate
(2) is a partition plate (2) provided along the upper side of the slope in the X direction and the one side of the Y direction for preventing powder from falling.
1), a non-spherical powder recovery hopper (22) provided on the other side in the Y direction, and a spherical powder recovery hopper (23) provided on the downhill side in the X direction. ) Is a spherical powder characterized by being provided with a vibration mechanism (4) which imparts vibration in an oblique direction within a range of 30 to 60 ° from the X direction or the Y direction and which is parallel to the XY plane. If necessary, the sorting device is provided with a tilt angle adjusting mechanism (6) for adjusting the tilt angle of the flat plate (2) in the X direction.

The flat plate (2) used in the present invention can be formed as a flat surface of a usual rolled steel plate, and preferably has no dents or the like.
As the material, stainless steel, aluminum alloy or the like can be applied.
A partition plate (21) is provided on the flat plate (2) to prevent the powder from falling out of the flat plate (2). Also provide in the opposite direction.

The flat plate (2) is provided with a non-spherical powder recovery hopper (22) at the end of the powder traveling direction (Y direction), and a spherical powder recovery hopper (23) is provided below the inclination in the X direction. It is provided. These recovery hoppers must be provided over the entire width so that all of the powder can be recovered.

The inclination of the flat plate (2) in the X direction is adjusted by the difference in the amount and shape of the spherical powder to be selected and the non-spherical powder mixed therein. The smaller the difference in the amount and shape of the non-spherical powder, the smaller the inclination and the more reliable the selection.
Usually, the spherical powder starts rolling at an inclination of about 1 °, and the non-spherical powder may start rolling at more than 15 °, and the inclination in the X direction is preferably in the range of 1 to 15 °.

The vibrating mechanism (4) includes a vibrating plate (4
It consists of 1) and a vibrator (42). The vibrating plate (41) is joined to the flat plate (2) at right angles to the XY plane in the range of 30 to 60 ° from the X direction or the Y direction. Thereby, the vibration applied to the flat plate is applied parallel to the XY plane. This is to prevent the non-spherical powder placed on the flat plate from moving in the jumping direction from the flat plate.When this jumping occurs, the non-spherical powder falls due to gravity in the downward slope of the X direction. Therefore, it may be mixed in the spherical powder to deteriorate the sorting accuracy.

The direction of vibration is an oblique direction with respect to the X or Y direction, and the inclination thereof is in the range of 30 to 60 °, and as much as 45
It is preferable that the inclination be close to the angle of °. The closer it is to the 45 ° tilt,
The number of collisions between the spherical powder and the non-spherical powder is reduced, and the mixing of the non-spherical powder into the spherical powder hopper (23) is reduced. When the angle with respect to the Y direction is less than 30 °, the component force in the uphill direction becomes small, and the probability that non-spherical powder enters the spherical powder recovery hopper (23) increases. Also, when the angle exceeds 60 °, the component force in the Y direction decreases, the probability of collision between spherical powder and non-spherical powder increases, and accurate spherical powder selection becomes impossible.

The anti-vibration mechanism (3) is necessary for holding the flat plate (2) on the base (1), and is a flat plate fixture joined to the flat plate (2).
It is composed of (31) and a spring, rubber or the like (32) provided so that the vibration is not transmitted to the base (1). An appropriate method may be used to fix the base (1) side. For example, a method of fixing to the base with a screw, or providing a recess having a size of rubber or a spring and fitting the same can be used.

The powder supply mechanism (5), which is provided if necessary, improves efficiency by eliminating manual supply, and is composed of a powder hopper (51) and a discharge adjusting valve (52). Powder hopper (5
When 1) is fixed to the flat plate (2), vibration is applied to make it easier to discharge the powder, but when it is better not to apply vibration, it may be held on the base (1). The discharge adjusting valve (52) adjusts the gap between the powder outlets, and is appropriately adjusted by a method such as fixing with a screw or a pin.

A tilt angle adjusting mechanism provided if necessary
(6) is used for adjusting the inclination angle of the flat plate (2) in consideration of the surface condition of the flat plate (2), the ratio of non-spherical powder to spherical powder, the specific gravity of the spherical powder or the surface condition, Adjust the inclination angle of the flat plate (2) by adjusting the distance between the flat plate fixture (31) and the flat plate (2) by a method such as jack bolt type or stacking of plates (not shown).

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail with reference to FIG. The flat plate (2) is made of stainless steel, has a size of 30 cm × 30 cm, and has a thickness of 3 mm. The partition plate (21) for preventing powder falling is provided above the inclination in the X direction and in the opposite direction of the powder traveling direction. Installed throughout the direction. It fixed to this partition plate (21), the powder hopper (51) was provided, and the outflow amount of the powder was adjusted with the discharge adjustment valve (52).

The flat plate (2) fixes the vibrating plate (41) at an inclination of 45 ° from the X direction, and the vibrating device (42) moves the non-spherical powder in the Y direction and the slope up direction. A sinusoidal vibration parallel to the -Y plane was applied. Further, the flat plate (2) is inclined at an angle of 5 ° in the X direction and is fixed to the base (1) by a flat plate fixture (31) by a spring (32). Prepare 1 kg of spherical copper powder of 180 μm ~ 300 μm, mix 10 g of flat non-spherical copper powder with the same range of particle diameter into this, put it in the powder hopper (51), and flow out to the flat plate (2). Let

The outflowing powder is a spherical powder that rolls down the slope and is collected by the spherical powder recovery hopper (23). Since non-spherical powder has a large amount of movement due to vibration, the length of sliding or rolling and the movement due to vibration are large. Due to the difference with the length of
It moved in the direction and was recovered by the non-spherical powder recovery hopper (21). The weight of the recovered powder was 999 g for the spherical powder and 11 g for the non-spherical powder.

[0018]

According to the spherical powder sorting apparatus of the present invention, the vibration direction is X.
Direction or the range of 30 to 60 ° from the Y direction,
Collision between falling spherical powder and non-spherical powder is reduced, and the powder is sufficiently dispersed, so that the spherical powder can be reliably selected.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire spherical powder sorter according to one embodiment of the present invention.

[Explanation of symbols]

(1) Base (2) Flat plate (21) Partition board (22) Non-spherical powder recovery hopper (23) Spherical powder recovery hopper (3) Anti-vibration mechanism (31) Flat plate fixture (32) Rubber or spring (4) Vibration mechanism (41) Vibration plate (42) Vibration machine (5) Powder supply mechanism (51) Powder hopper (52) Emission control valve (6) Tilt angle adjustment mechanism

Continuation of the front page (56) Reference JP-A-8-238458 (JP, A) JP-A-2000-34664 (JP, A) JP-A-11-319728 (JP, A) Actual development Sho-49-33861 (JP, U) Patent 2556766 (JP, B2) Patent 3030464 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B07B 1/00-15/00

Claims (2)

(57) [Claims] 1. A spherical powder sorter using an inclined plate, a flat plate (2) having an XY plane and inclined in the X direction.
Is installed on the base (1) via the vibration-proof mechanism (3). On the slope upper side of the flat plate (2) in the X direction, one side in the Y direction is on the flat plate (2). Is provided with a powder supply mechanism (5) for supplying powder, and the flat plate (2) is provided along the upper side of the upper side of the slope in the X direction and the side of one side in the Y direction to prevent powder falling. A partition plate (21) for the purpose, a non-spherical powder recovery hopper (22) provided on the other side in the Y direction, and a spherical powder recovery hopper (23) provided on the sloped side in the X direction. ,
Furthermore, on the flat plate (2), 30 to 60 ° from the X direction or the Y direction.
A spherical powder sorter characterized by being provided with a vibrating mechanism (4) for imparting vibration in an oblique direction of the range and parallel to the XY plane. 2. The spherical powder sorter according to claim 1, further comprising an inclination angle adjusting mechanism (6) for adjusting an inclination angle of the flat plate (2) in the X direction.