JPH11292378A - Paper sheet separating fin and fin rotor using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lengthen the sevice life by abrasion resistance and a tear by providing a fin main body formed of an elastic material, short fiber and beads. SOLUTION: The fixing part 1a to be installed on a rotor is formed in the base part of a fin main body 1 formed of an elastic material, and the tip part of the fin main body 1 forms the separating part 1b for acting on a banknote. A mixture of thermoplastic elastomer such as thermoplastic polyurethane and thermoplastic polyester and cross-linked rubber can be cited as the elastic material. Nylon fiber, Aramid fiber, polyester fiber, glass fiber and a cotton thread are used as short fiber 2 blended into the elastic material. The length of the short fiber 2 is desirably 0.1 to 5 mm, and 0.5 to 2 mm is most desirable. A thickness of the short fiber 2 is desirably 0.5 denier to 10 denier, and 1.0 denier to 5 denier is most desirable. The short fiber 2 is desirably blended by 3 to 30 pts.wt. based on 100 pts.wt. of the elastic material, and 5 to 10 pts.wt. is most desirable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fin for use in, for example, bill sorting of financial instruments. More specifically, the present invention relates to a sheet sorting fin in a sheet sorting apparatus for stacking a predetermined number of bills in a stack. The present invention relates to a fin rotor using leaf fins.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 8-225213 discloses a bill aligning apparatus using a bill separating fin.
There has been proposed one provided with a fin rotor having many elastic fins. By rotating a fin rotor on which such fins (called wings or bill-dropping rubbers) are radially attached, the bills are flicked one by one to separate the bills. Therefore, the bill separating fins of the fin rotor are required to be soft enough not to damage the bill even if it is rubbed on the surface of the bill, and to be rigid enough to move the bill. However, the bill processing fins of the fin rotor are often consumed because the edges of the bills sent one by one are hit and dropped on the aligning table by the rotation of the fin rotor.

As shown in FIG. 5, for example, a conventional bill separating fin 20 includes a fin body 21 made of an elastic material.
In order to increase the rigidity of the fin body 21, a plurality of cords 22 are buried therein.

However, in the conventional bill separating fin 20, a loud sound (sound of the fin hitting the bill) is generated when the bills are hit one by one, which causes a large noise problem indoors. In order to reduce this noise, the bill processing fin 20
Although it is conceivable to reduce the thickness T1 of the sheet or to reduce the width thereof, simply reducing the thickness or the width dimension in this way reduces the durability of the bill separating fin 20,
There is a drawback that the function of sorting bills is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and an object of the present invention is to reduce the durability and the function of separating bills while preventing the bill from being reduced. An object of the present invention is to provide a paper sheet sorting fin and a fin rotor using the same, which can reduce noise when hitting.

[0006]

According to a first aspect of the present invention, there is provided a paper sheet sorting fin having a fin body formed of an elastic material, and short fibers or beads dispersed in the fin body. The above object is achieved.

According to a second aspect of the present invention, there is provided a paper sheet sorting fin comprising three to three fibers or beads per 100 parts by weight of the elastic material.
A composition containing 30 parts by weight of the composition is formed, thereby achieving the above object.

[0008] In one embodiment, the short fibers are nylon fibers, aramid fibers, polyester fibers,
It is selected from the group consisting of glass fiber and cotton yarn.

In one embodiment, the short fiber has a length of 0.1 mm to 5 mm, and the short fiber has a thickness of 0.5 mm.
Denier is 10 to 10 denier.

[0010] In one embodiment, the elastic material is at least one selected from the group consisting of a thermoplastic elastomer and a mixture of a thermoplastic elastomer and a crosslinked rubber.

[0011] The fin rotor of the present invention has the above-mentioned sheet sorting fin and a core for fixing the base of the sheet sorting fin, thereby achieving the above object.

The operation of the present invention is as follows.

[0013] The paper separating fin of the present invention has a fin main body formed of an elastic material and short fibers or beads dispersed in the fin main body, so that the fin main body has abrasion resistance and tear. The life can be extended, and therefore, even if the thickness of the fin main body is made thinner than before, it is possible to prevent a reduction in life due to wear and tear caused by the thinning.

Further, as a material constituting the fin body,
By using a thermoplastic resin to which short fibers are added,
Paper-sheet sorting fins can be manufactured by injection molding.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

The paper sheet sorting fin 10 of the present invention is shown in FIG.
As shown in FIG. 1, a fin body 1 formed of an elastic material;
Short fibers 2 or beads dispersed in the fin body 1.

At the base of the fin body 1, there is formed a fixing portion 1a for attachment to a rotor, and at the tip of the fin body 1, a separating portion 1b acting on a bill is formed.

The elastic material forming the fin body 1 includes, for example, a thermoplastic elastomer such as thermoplastic polyurethane or thermoplastic polyester, and a mixture thereof with a crosslinkable rubber. As the crosslinkable rubber, for example, nitrile rubber, chloroprene rubber, Hypalon,
Polybutadiene rubber, ethylene-propylene rubber (EP
M), ethylene-propylene terpolymer (EPD)
M), H-NBR and the like, and one or more of these can be used alone or in combination.

The elastic material may contain a vulcanizing agent, a vulcanization accelerator and a reinforcing agent. Examples of the vulcanizing agent include organic peroxides such as dicumyl peroxide, organic sulfur compounds, and metal oxides. As the vulcanization accelerator, for example, fatty acids such as stearic acid,
And metal oxides. Examples of the reinforcing agent include carbon black and white carbon. Further, for example, anti-aging agents, fillers, plasticizers,
Adhesives and the like can also be formulated.

The short fibers 2 blended in the elastic material include nylon fibers, aramid fibers, polyester fibers,
Glass fiber, cotton thread and the like can be mentioned. One or more of these may be used alone or in combination.

The length of the short fiber 2 used in the present invention is 0.1.
1 mm to 5 mm is preferable, and more preferably 0.5 m
m to 2 mm. The short fiber 2 has a thickness of 0.5 denier or more.
10 denier is preferred, and more preferably 1.0 denier to 5 denier.

When the length and thickness of the short fibers 2 are out of the above range, that is, when the length of the short fibers 2 is less than 0.1 mm, the reinforcing effect by the short fibers 2 (improvement of durability and wear resistance) 5m
If it exceeds m, it is difficult to mix it into the elastic material, it is difficult to obtain a uniform mixture, and the reinforcing effect is not improved. When the thickness of the short fiber 2 is less than 0.5 denier or more than 10 denier, the reinforcing effect by the short fiber 2 does not increase.

The short fibers 2 are preferably blended in an amount of 3 to 30 parts by weight based on 100 parts by weight of the elastic material.
More preferably, 5 to 5 parts by weight of the elastic material.
10 parts by weight. If the blending amount of the short fibers 2 with respect to 100 parts by weight of the elastic material is less than 3 parts by weight, the reinforcing effect is not sufficient, and if it exceeds 30 parts by weight, kneading becomes difficult, and the physical properties of the obtained paper sorting fins (for example, , Abrasion resistance, etc.) tend to decrease.

As described above, as shown in FIG. 1, a paper sheet sorting fin 10 in which the short fibers 2 are blended in the paper sheet sorting main body 1 is obtained. The thickness T2 of the leading end of the paper sheet sorting fin can be made thinner than before.
For example, what was about 0.7 mm in the past
It can be 0.5 mm, especially 0.4-0.45 mm.

Even if the thickness of the sheet fin is smaller than that of the conventional sheet fins, since the short fibers are present in the inside thereof in a randomly oriented state, the conventional sheet fin having a large thickness is used. The same high durability and abrasion as the similar fins can be secured. It should be noted that one or both sides of the formed paper separating fins may be polished to further enhance the abrasion.

Next, an example of the method for producing the paper sheet sorting fin of the present invention will be described.

The short fibers 2 are blended and kneaded with the elastic material, and the short fibers 2 are uniformly dispersed in the elastic material. As the kneader, a conventionally known one such as a Banbury mixer, a mixing roll, a high-speed twin-screw continuous mixer, or an extruder-type kneader can be used. Next, the obtained composition is injection-molded under predetermined conditions to obtain a paper sheet sorting fin.

The same effect can be obtained by using beads instead of or in combination with the short fibers. Examples of the beads include glass beads, carbonate beads, and the like. The blending amount of the beads is the same as in the case of the short fibers described above.

As shown in FIG. 2, the fin rotor according to the present invention comprises a sheet sorting fin 10 configured as described above, and a core 15 for fixing the base 1a of the sheet sorting fin 10. Has. An engaging recess 15 a for fixing the base 1 a of the sheet sorting fin 10 is provided in the core 15.
Is formed, and the base 1a of the paper sheet sorting fin 10 is engaged with the engaging recess 15a. The core 15 can be formed of a resin molded product or a metal product. Further, the core portion 15 and the paper sheet sorting fin 10 can be formed integrally. In this case, injection molding may be performed using a material for forming the above-mentioned paper sheet sorting fin.

[0030]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples. The noise test was performed according to the following method.

1) Evaluation equipment FIGS. 3 and 4 show a noise tester.

3 and 4, a pair of side frames 3, 3 are connected by a shaft 4 to form a frame 5, and a drive shaft 7 connected to a motor 6 between the frames 3, 3 of the frame 5. And a driven shaft 8 are installed. The drive shaft 7
A pulley 9 is attached to the driven shaft (also referred to as a blade shaft).
The fin rotor 11 is attached to 8. A belt 13 is stretched between the pulley 9 and the pulley portion 12 of the rotor 11. A bill receiving box 14 is provided below the fin rotor (also referred to as an impeller) 11.

2) Sound level meter A Lion precision sound level meter NA-60 was used.

3) Microphone position The microphone was arranged at the following position with respect to the blade axis 8.

Upper: 240 mm Forward (left direction in FIG. 4): 200 mm Left / right direction: central part of the tester shown in FIG. 3 4) Noise measurement conditions The noise measurement conditions were as follows.

A) Conveyed paper on the impeller: Yes b) Rotation speed of the impeller: 1,250 rpm c) Distance from the center of the impeller to the top of the paper: 20 mm (Example 1) Hardness after curing 95, 100 parts by weight of thermoplastic polyurethane, staple fibers (aromatic fibers, 2
(Denier × 1 mm length) 5 parts by weight were blended and kneaded. Next, this composition was injection-molded to obtain a paper sheet separating fin. The thickness of the paper fins is 0.40 to 0.45
mm.

Example 2 10 parts by weight of short fibers (aromatic fiber, 2 denier × 1 mm length) were blended with 100 parts by weight of a thermoplastic polyurethane having a hardness of 95 after curing, and kneaded. Next, this composition was injection-molded to obtain a paper sheet separating fin. The thickness of the paper fins is 0.
It was 40-0.45 mm.

Comparative Example 1 Paper-sheet sorting fins were obtained in the same manner as in Example 1 except that no short fibers were blended.

(Comparative Example 2) A conventional paper sheet sorting fin was used. As shown in FIG. 5, the paper sheet sorting fin 20 has a plurality of polyester cords 22 embedded in a fin body 21 formed of thermosetting polyurethane. The thickness of the tip was 0.7 mm.

The sheet separating fins obtained in each of the examples and comparative examples as described above were attached to the rotor of the tester shown in FIGS. 3 and 4, and the noise test was evaluated.

The results were as follows.

Example 1 80.3 dB Example 2 82.5 dB Comparative example 1 80.0 dB Comparative example 2 90.8 dB From the above results, the noise on the tester was reduced from 90.8 dB to 8
It has been reduced to 0.3 to 82.5 dB. Further, when the durability and abrasion of the paper separating fins obtained in Examples 1 and 2 were tested, they were equivalent to the conventional product (comparative example 2). The durability and abrasion of the paper separating fins obtained in Comparative Example 1 were inferior to those of Examples 1 and 2.

[0043]

According to the present invention, the rigidity required for the sorting function can be obtained, so that the thickness of the sheet fins can be reduced, and as a result, compared with the existing fins. The noise can be reduced, for example, by 8 to 10 dB.

In addition, since short fibers are blended, it is possible to prevent a decrease in wear and a shortened life caused by tearing caused by reducing the thickness of the paper sheet sorting fin.

Further, the paper sheet sorting fin of the present invention is
Since it is obtained by injection molding, it is easy to manufacture and relatively inexpensive.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a sheet sorting fin of the present invention.

FIG. 2 is a side view of the fin rotor to which the paper sheet sorting fin shown in FIG. 1 is attached.

FIG. 3 is a plan view of the noise tester.

FIG. 4 is a side view of the noise tester.

FIG. 5 is a perspective view of a conventional paper sheet sorting fin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fin body 2 Short fiber 10 Paper fin

Claims (6)

[Claims] 1. A paper separating fin having a fin body formed of an elastic material and short fibers or beads dispersed in the fin body. 2. A paper separating fin formed by molding a composition in which 3 to 30 parts by weight of short fibers or beads are blended with respect to 100 parts by weight of an elastic material. 3. The paper leaf sorting fin according to claim 1, wherein the short fibers are at least one selected from the group consisting of nylon fibers, aramid fibers, polyester fibers, glass fibers, and cotton yarns. 4. The short fiber has a length of 0.1 mm to 5 m.
m, the thickness of the short fiber is 0.5 denier to 10 denier, the paper leaf sorting fin according to any one of claims 1 to 3. 5. The method according to claim 1, wherein the elastic material is at least one selected from the group consisting of a thermoplastic elastomer and a mixture of a thermoplastic elastomer and a crosslinked rubber. Paper leaf fins. 6. A fin rotor comprising: the sheet sorting fin according to claim 1; and a core for fixing a base of the sheet sorting fin.