JP2578038Y2 - Metering supply roll - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed amount supply roll for supplying a fixed amount of powder or granules such as foodstuffs to a container.

[0002]

2. Description of the Related Art For example, a fixed-amount supply roll has been used to supply a powdery or granular material such as cup noodles to a container in a fixed amount. As shown in FIG.
0 is provided with an iron core 22 at the center of a roll body 21 made of a resin,
Two rows were formed at symmetrical positions.

[0005] When using the constant-amount supply roll 20, as shown in FIG. 5A, the constant-amount supply roll 20 is disposed below a hopper 26 in which a granular material 25 is placed. When the fixed amount supply roll 20 is rotated as shown in B), the granular material 25 filled in the concave portion 23 is taken out and a container (not shown) arranged below the fixed amount supply roll 20.
The powder 25 could be supplied inside. in this way,
By simply rotating the fixed amount supply roll 20, the concave portions 2 are successively formed.
3, the granular material 25 can be supplied in a fixed amount at a time. At this time, the boundary between the concave portion 23 and the outer peripheral surface of the roll body 21 is a sharp edge portion 24. The powder 25 in 26 was scraped.

[0004]

2. Description of the Related Art
Was made of resin and thus easily abraded. In particular, since the granular material 25 was bitten between the edge portion 24 and the lower end of the hopper 26, the edge portion 24 was liable to be greatly worn.
When the edge portion 24 is worn, a gap is generated between the edge portion 24 and the lower end of the hopper 26, and there is a problem that the powder 25 is scattered from the gap. Further, when the edge portion 24 is worn, there is also a problem that the scouring action is deteriorated and the powder 25 cannot be supplied in a constant amount. Furthermore, since the abrasion powder of the edge portion 24 is mixed as foreign matter into the granular material 25, there is a problem in terms of hygiene particularly when supplying foodstuffs.

[0005]

In view of the above, the present invention provides:
A plurality of holes are provided on the outer peripheral surface, a bottomed cylindrical cup is provided in the holes to form a concave portion, and powder particles are dropped into the concave portion from the hopper and the outer peripheral surface of the hopper and the cup are rubbed. in a roll quantified filled with granular material by a predetermined amount by the action, at least the boundary edges of the cup, bending strength 100 kg / mm ² or more and the fracture toughness value 5.9MNm ^-3/2 or more It is characterized by being formed of certain zirconia ceramics.

[0006]

Embodiments of the present invention will be described below. As shown in an exploded perspective view in FIG. 1 and a sectional view in FIG. 2, the fixed quantity supply roll of the present invention is obtained by welding a plurality of intermediate flanges 2 to a metal shaft 1 and end flanges 4 to both ends. Is fixed. And these intermediate flanges 2
Is covered with a metal pipe 3 and welded, and a ceramic sleeve 6 is further covered on the outside of the pipe 3, and this sleeve 6 is fixed by end face flanges 4 at both ends.

Further, two cutouts 2a are formed in the intermediate flange 2 at symmetrical positions, and holes 3a, 6a are formed at positions corresponding to the cutouts 2a of the pipe 3 and the sleeve 6, respectively. I have. A cup 5 made of zirconia ceramics is inserted into the holes 6a, 3a, and the cup 5 is fixed to the notch 2a of the intermediate flange 2 with bolts (not shown). The recess 5a of the cup 5
An adjustment plate 7 that can move up and down is provided in the inside, so that the capacity of the concave portion 5a can be adjusted.

[0008] Such a fixed amount supply roll of the present invention is as follows.
Since the edge portion 5b at the boundary between the concave portion 5a and the outer peripheral surface is made of zirconia ceramics, it has excellent strength and abrasion resistance, and is less likely to chip or wear even after long-term use. Also,
The outer peripheral surface of the fixed quantity supply roll is made of ceramic sleeve 6
, This part also has excellent wear resistance. Further, as shown in FIGS. 1 and 2, the hollow structure using the intermediate flange 2 can reduce the weight, and the material is made of metal and ceramic, so that the rigidity is high.

The edge portion 5b usually has a chamfered shape such as a C surface or an R surface. According to various experiments, if the width of the C surface or the radius of curvature of the R surface is set to 0.1 mm or less. Since the edge portion 5b had an extremely sharp edge, it was found that the powder 25 was excellent in the scrubbing action.

FIG. 3 shows another embodiment of the present invention.
The fixed amount supply roll shown in FIG.
A cup 13 made of zirconia ceramics is adhered to the outer peripheral surface of a resin roll body 12 having
3a is formed. Since the edge portion 13b at the boundary between the concave portion 13a and the outer peripheral surface is made of zirconia ceramics, the fixed quantity supply roll is also less likely to be chipped or cracked and has excellent wear resistance.

In the above embodiment, the cups 5, 1
As a material of No. 3, ZrO ₂ is a main component, and CaO, M
A partially stabilized zirconia containing a stabilizer such as gO or Y ₂ O ₃ is used. In particular, it contains _{2 to} 5 mol% of Y ₂ O ₃ , has 80% or more of tetragonal crystals, and has an average crystal particle diameter of 1%.
It is preferable to use one having a size of μm or less. Further, by subjecting the zirconia ceramic to HIP (Hot Isostatic Pressing) treatment, the strength can be further increased. As shown in Table 1, this zirconia ceramic has excellent strength and toughness as compared with other ceramics.

In the above embodiment, the entire cups 5, 13 are formed of zirconia ceramics, but it is sufficient that at least the edge portions 5b, 13b are formed of zirconia ceramics. For example, although not shown, only the upper ends of the cups 5 and 13 may be made of ring-shaped zirconia ceramics.

Further, in the embodiment shown in FIGS. 1 and 2, various materials such as alumina, zirconia, silicon carbide and silicon nitride can be used for the material of the sleeve 6, but alumina ceramic is used from the viewpoint of cost. Is enough.

[0014]

[Table 1]

Experimental Example Here, a fixed quantity supply roll of the present invention shown in FIG. 1 and FIG. 2 was prototyped and subjected to a use test. The size of the fixed amount supply roll is 180 mm in diameter and 1370 mm in length, and the concave portion 5a
Were formed in total of 24 pieces. In addition, the cup 5 is No. 1 in Table 1.
Sleeve 6 made of zirconia ceramics 4
Was formed of alumina ceramics.

Further, as a comparative example, one in which the cup 5 was formed of alumina ceramics as in the above (Comparative Example 1), and one in which the whole was formed of resin as shown in FIG. 4 (Comparative Example 2) were prepared. .

Using these quantitative supply rolls, a use test was conducted in which 15 g of a cup ramen was supplied as a granular material, and after 6 months, the degree of wear of the edge portion of each quantitative supply roll, The presence or absence of leakage, the variation in the supply amount, and the like were examined. Note that the variation in the supply amount is an average value of the difference between the determined supply weight and the actual supply weight. The results are as shown in Table 2.

These results clearly show that Comparative Examples 1 and 2
In the example of the present invention, although the edge portion was worn out after 6 months of use and the use became difficult, in the embodiment of the present invention, the condition was almost the same as the initial state, indicating that long-term use is possible. Was.

[0019]

[Table 2]

In the above embodiment, the fixed amount supply roll is used for supplying foodstuffs. However, the fixed amount supply roll of the present invention is not limited to use for foodstuffs, and is used for supplying various powders and granules. It goes without saying that you can do it.

[0021]

As described above, according to the present invention, a plurality of holes are provided on the outer peripheral surface, a bottomed cylindrical cup is provided in each of the holes to form a concave portion, and powder particles are formed in the concave portion by the hopper. A roll for dropping a body and filling a fixed amount of the granular material by a rubbing action between the hopper and the outer peripheral surface of the cup, and quantifying the powder. ² or more and a fracture toughness value of 5.9
By formed by zirconia ceramic is MNm ^-3/2 or more, it is possible to wear resistance of the edge portion is high, and to prevent the occurrence of cracks and lacking. Therefore,
Not only can the metering roll be used successfully for a long time,
Since the abrasion powder at the edge portion can be prevented from being mixed into the granular material, it is sanitary especially in the case of supplying foodstuffs. In addition, even if the edge portion is worn due to the action of rubbing with the hopper, it is possible to achieve an excellent effect such as being economical because only the cup needs to be replaced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a fixed amount supply roll according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional fixed supply roll.

FIGS. 5A and 5B are cross-sectional views for explaining a method of using a fixed amount supply roll.

[Description of Signs] 1 ... Shaft 2 ... Intermediate Flange 3 ... Pipe 4 ... End Face Flange 5 ... Cup 5a ... Recess 5b ... Edge 6 ... Sleeve 7 ... Adjustment plate

Claims (1)

(57) [Scope of request for utility model registration] [Claim 1 further comprising a plurality of holes on the outer peripheral surface, a bottomed cylinder in the hole
Is formed to form a concave portion, and a hopper is formed in the concave portion .
Ri along with the dropping of the granular material, of the hopper and the cup
A a granular material by rubbing endless action with the outer peripheral surface quantitative be Carlo Lumpur filled by a certain amount, also the least of the cup
Metering roll, characterized in that the boundary edge, is formed of zirconia ceramic is a and fracture toughness 5.9MNm ^-3/2 or more the bending strength 100 kg / mm ² or more.