JP2000191176A - Light belt for carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light belt for carriage not lowering feeding precision of carrying articles of sheets of a bill, a card, a ticket, a postcard, etc. even in the case where a using term becomes long by maintaining a constant friction coefficient even in the case where the using term becomes long and oil and water is attached on a belt back surface which is a carrier surface. SOLUTION: A carrier surface is made an irregular surface by arranging at least more than one kind of abrasive grain materials 7 grain diameters of which are more than 10 μm and less than 1000 μm made selectively of ceramic particles, ceramic whiskers, mineral particles and metal particles of more than three at continuous or intermittent 10 stage Moh's hardness by projecting them along an overall periphery of a belt back surface 6 to be the carrier surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt for conveying relatively lightweight articles, and more particularly, to paper such as banknotes, cards, tickets, postcards and the like used in currency exchange machines, vending machines and automatic ticket collection machines. The present invention relates to a transport belt that transports leaves or coins by frictional force on the surface of the belt.

[0002]

2. Description of the Related Art Today, in addition to saving labor costs, vending machines whose business hours are not limited during the day are widespread, and various kinds of juices, magazines, tickets, etc. are available. It can be purchased by vending machines. Further, vending machines that can use bills and prepaid cards have become common.

Conventionally, in the internal structure of this vending machine, a mechanism using a roller has been used to transport bills and prepaid cards, but a transported object such as a bill winds around the rollers during the transport. In recent years, in order to improve the certainty of the conveyance, a mechanism using a back surface of an elastomer belt having a flat back surface has been increasingly used.

At present, in the case of a mechanism using a belt, in order to efficiently use the conveying capacity of the belt, the mechanism is used in a state where the contact area between the belt and the article is maximized by using the entire back surface of the belt. For this purpose, measures are taken to smooth the surface of the back surface of the belt so as to increase the contact area with the article as much as possible, and to reduce the hardness of the elastomer on the back surface of the belt to increase the coefficient of friction.

[0005]

As described above, enlarging the contact area and softening the elastomer itself has a high effect in transporting bills, cards, and the like, and has realized reliable transport. However, if the usage period is prolonged, garbage and other debris and dust may adhere to the belt bills and card transport surface, and water droplets due to rain and the like that adhere to the transported objects and are carried in. As a result, there has been a problem that the friction coefficient of the belt conveying surface is reduced, and consequently the conveying capability is reduced. Also, lowering the hardness of the elastomer to increase the coefficient of friction, on the other hand, lowers the abrasion resistance, and wear debris on the conveyor surface of the belt adversely affects peripheral sensors, etc. In addition to the problem of soiling, the durability of the belt deteriorates and the life is shortened.

In view of the above, the present invention has been made in view of the above points, and has a long service life, and maintains a constant coefficient of friction even when oil and water adhere to the back of the belt. It is an object of the present invention to provide a light-conveying belt in which the accuracy of feeding conveyed articles such as banknotes, cards, tickets, postcards and the like or coins is not reduced even when the period becomes long.

[0007]

According to a first aspect of the present invention, there is provided a light-conveying belt according to the first aspect of the present invention, wherein one side of the belt is used, and the frictional force between the surface and the light-conveying object is used. Is characterized in that the particles for transportation are continuously or intermittently projected and arranged on the transportation surface, and the transportation surface is made uneven. Since the portion that comes into contact with the lightly conveyed object is a protruding particle, the contact area is small, oil and moisture adhering to the lightly conveyed object are less likely to adhere, and the friction coefficient of the conveying surface can be kept constant.

Further, the light transport belt according to claim 2 is
The particle according to the first aspect of the present invention is characterized in that the particle is a particle having 3 or more in 10-step Mohs hardness. If the 10-step Mohs hardness is less than 3, the particles themselves are worn out by contact with the belt, and the effect of projecting and arranging the particles cannot be obtained, so that the hardness is preferably 3 or more. Where 1
The 0-step Mohs hardness is a hardness scale obtained by dividing the hardness of a mineral from 1 degree to 10 degrees and indicates the strength against abrasion and scratches, and is easily damaged by human nails such as talc. The angled object is 1 degree, and the diamond is 10 degrees.
The breakdown consists of two items, such as plaster, that are slightly damaged by human nails.
Degree of damage with marble knives, 3 times, slight damage with malachite or other knives, 4 times, glass with hardness almost the same as glass, 5 degrees, glass of opal, turquoise, etc. Files that are slightly harder and easier to scratch are 6 degrees, those that are slightly damaged by a file such as crystal or jade are 7 degrees, those that are not damaged by a file such as topaz or spinel are 8 degrees, An object that can damage minerals other than diamond, such as sapphire, is 9 degrees.

Further, the light transport belt according to claim 3 is
In the invention according to claim 1 or 2, the particles are at least one kind of abrasive material selected from ceramic particles, ceramic whiskers, mineral particles, and metal particles. This makes it difficult for oil or water to adhere to the lightly conveyed object, and can further keep the friction coefficient of the belt rear surface constant.

Further, the light transport belt according to claim 4 is
In the invention according to claims 1 to 3, the particle diameter is 10 μm.
m or more and 1000 μm or less. The particle size is 10
If it is less than 10 μm, the effect of arranging the particles cannot be obtained, and
If it exceeds 00 μm, there is a possibility that the transferred object may be damaged. Therefore, the particle size of the particles is preferably 10 μm or more and 1000 μm or less. More preferably, it is 30 μm or more and 200 μm or less.

Further, the light transport belt according to claim 5 is
The invention according to claims 1 to 4, wherein the lightly conveyed object is a paper sheet such as a bill, a card, a ticket, a postcard or a coin. The dirt and dust easily adhere to these lightly conveyed objects, and oil droplets such as oil of human hands and rainwater adhere to the lightly conveyed belts of the present invention. It can be prevented that the belt easily adheres to the conveying surface.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the transport belt of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional perspective view of a main part of a light transport belt according to the present invention, and FIG.
3 is a cross-sectional perspective view of FIG. 1 as viewed from the tooth portion side, and FIG. 4 is a schematic cross-sectional view of an example of an embodiment of the light transport belt according to the present invention. . Here, a case will be described in which the light transport belt according to the present invention is applied to a toothed belt. However, the present invention is not limited to a toothed belt, and a V-ribbed belt, a low edge belt, a low edge cog belt, and a flat belt. It can also be applied to belts and the like.

In FIG. 1, a conveyor toothed belt 1 comprises a plurality of tooth portions 5 and a back portion 2 in which a cord 3 is embedded along the longitudinal direction of the belt, and a tooth cloth 8 is provided on the surface of the tooth portions 5. It is stuck. The pitch of the tooth portions 5 is preferably 3 mm or less, whereby the rotation fluctuation rate can be reduced and the feeding accuracy can be increased.

The rubber used for the teeth 5 and the back 2 is chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber, natural rubber, EPT (ethylene propylene terpolymer), styrene-butadiene rubber, butyl rubber, chlorosulfonated rubber. It consists of a rubber composition using polyethylene rubber or the like. Among the above rubbers, as compounding agents, carbon black, zinc white, stearic acid, a plasticizer, an antioxidant, etc. are added, and as a vulcanizing agent, there are sulfur and organic peroxides. The vulcanizing agent is not particularly limited. Further, the toothed belt for conveyance 1 of the present invention may have an antistatic function depending on the usage mode. Therefore, the electric resistance value of the belt is set to 6M depending on the amount of the carbon black or the like added.
It is also possible to adjust to a low value such as Ω.

Further, at least a part of the rubber component includes
A chloroprene rubber having excellent crystal resistance may be blended.
As this crystalline chloroprene rubber, those commercially available as a crystalline resistant grade can be used. As a measure of the crystalline resistant, the hardness (JIS) when left at 0 ° C. for 100 hours can be used. It is preferable that the increase in hardness is 10 degrees or less. Of course, the change in hardness is ideally zero. The compounding amount of the crystal-resistant chloroprene rubber is preferably set so that the content in the rubber composition is 40% by weight or more, so that all of the rubber components are occupied by the crystal-resistant chloroprene rubber. It may be.

Crystallized chloroprene rubber hardly crystallizes and hardens even when left for a long time in a low-temperature environment.
Therefore, when the rubber layer constituting the back portion 2 and the tooth portion 5 is formed of a rubber composition containing chloroprene rubber having crystal resistance, the increase in hardness of the rubber layer due to crystallization in a low temperature environment is suppressed, Can be prevented from decreasing.

The following three methods are available for arranging the particles 7 on the back surface 6 of the belt serving as the conveying surface. (1) The particles are kneaded into the back rubber of the belt, and after vulcanization, the back is polished to expose the particles. (2) The particles are arranged by applying the particles mixed with the glue to the belt back surface 6. (3) The rubber containing the particles is adhered to the belt back surface 6 before vulcanization, and a particle layer is attached to the belt back surface by vulcanization. The above three methods are conceivable as a method of disposing the particles 7, but other methods may be used as long as the particles 7 protrude from the surface. In addition, the particles to be used are ceramic particles, ceramic whiskers,
Desirably, it is at least one abrasive material selected from silica sand and metal particles. If the 10-step Mohs hardness is lower than 3, the particles themselves are soft, and the particles are worn out by friction with the object to be conveyed, so that the effect cannot be maintained for a long time. Further, the particle size is preferably 10 μm or more and 1000 μm or less. More preferably, it is 30 μm or more and 200 μm or less. If the thickness is less than 10 μm, the effect is not exhibited, and if the thickness exceeds 1000 μm, the transported material is damaged, thereby causing dust and the like generated from the transported product to be added to the belt and shortening the life of the transport system. It is because it is considered that it becomes.

The core wire 3 is obtained by twisting a filament of E glass or high-strength glass of 5 to 9 μm with an RFL solution or the like which is a protective agent or an adhesive made of a rubber composition. Things. Further, as an organic fiber, a filament of 0.5 to 2.5 denier of a para-aramid fiber (trade name: Kevlar, Technora) having a small elongation with respect to stress and a large tensile strength is twisted, and an RFL solution, an epoxy solution A twisted cord treated with an adhesive of an isocyanate solution and a rubber composition is used. However, the present invention is not limited to these.

The canvas used as the tooth cloth 8 is 6
Nylon, 66 nylon, polyester, aramid fiber and the like may be used alone or in combination. In FIG. 3, the warp yarn 10 of the tooth cloth 8 (belt width direction)
The configuration of the weft 9 (belt length direction) is also a filament yarn or a spun yarn of the fiber, and the woven configuration may be any of a plain woven fabric, a twill woven fabric, and a satin woven fabric. In addition, it is preferable to use a part of urethane elastic yarn having elasticity as the weft.

The tooth cloth 8 may be treated only with the RFL solution. In this case, the RFL liquid obtained by drying the RFL liquid has a solid content of 30 to 5 times.
It is preferably 0% by weight. The solid content of the RFL liquid is composed of the solid content of the RF resin and the latex. The solids adhesion amount of the RFL liquid was calculated as [weight of canvas after treatment−weight of untreated canvas] / [weight of untreated canvas] × 100
%.

The RFL solution is obtained by mixing an initial condensate of resorcinol and formalin with latex, and the molar ratio of resorcinol to formalin is 1 to 1 to 3. Also,
The weight percent ratio of the precondensate of resorcinol and formalin to latex is 1: 1 to 10. The latex used here is a latex such as styrene-butadiene-vinylpyridine terpolymer, hydrogenated nitrile rubber, chlorosulfonated polyethylene, epichlorohydrin and the like.

As a specific treatment method of the tooth cloth 8,
The canvas is immersed in the RFL solution, dipped with a pair of rolls at a squeezing pressure of about 0.3 to 0.8 kgf / cm ² (gauge pressure), dried, and then the same process is repeated to adhere to the canvas. The amount of solids adhered to the RFL liquid is 30 to
It was adjusted to 50% by weight. If the solid content of the RFL liquid is less than 30% by weight, the contact portion between the warp 10 and the weft 9 of the canvas is easy to move, and the opening 11 is enlarged.
May be exposed from the opening 11 of the tooth cloth 8 to the tooth surface. On the other hand, the solid content of the RFL solution is 50%.
If the amount is more than 10% by weight, there is a problem that the solid content adhered amount becomes large and the shape of the tooth portion of the belt does not appear accurately.

The transport belt 1 constructed as described above
FIG. 4 is a schematic side view showing an application example of the present invention. As shown in FIG. 4, the two belts 1a and 1b are opposed to each other on the back surface, and the toothed portion 5 of the inner peripheral surface 4 is driven by meshing with the toothed pulleys 21 and 22, respectively. This is used for nipping and transporting a conveyed object such as a bill on the back surfaces 6 of both belts 1a and 1b. Although the nipping and conveying system will be described here, the light conveying belt according to the present invention is not limited to this nipping and conveying system.

Generally, it is preferable that the belt back surface 6 serving as a conveyance surface transport the article more reliably as the friction coefficient with the object to be conveyed is larger, and the friction coefficient of the belt back surface 6 in the initial stage of use is large. Furthermore, it is necessary to avoid that the friction coefficient decreases with time due to, for example, paper dust or paper dust generated from bills adhering to the belt back surface 6 due to long-term use.

The light-conveying belt 1 of the present invention satisfies the above-mentioned problem, and for that purpose, the particles 7 are arranged so that the particles 7 protrude from the surface of the belt back surface 6 which is the conveying surface. As an example of the arrangement method, the same effect can be obtained in the case of arranging the belt on the entire back surface 6 as shown in FIG. 1 and in the embodiment as shown in FIGS. Here, FIG. 5 shows one arranged in a striped shape in the circumferential direction, and FIG.
7 shows ones arranged at regular intervals in the circumferential direction.
Indicates that they are arranged at regular intervals in the belt width direction. The embodiment is not limited to those described above, and it is sufficient that the particles protruding in the circumferential direction are substantially continuous.

In the case where the belt back surface 6 of the conventional conveying surface is flat, if a conveyed object is conveyed with paper debris, oil, or the like attached to the belt back surface 6, pressure from the conveyed object is applied, and the belt, which is the conveyed surface, remains intact. The belt adheres to the back surface 6 and cannot be easily dropped, and the friction coefficient of the belt back surface 6 is reduced.

On the other hand, in the transport belt 1 of the present invention, the particles are arranged on the belt back surface 6 serving as the transport surface and projected, thereby reducing the contact area with the transported object and making the surface uneven. Even if debris, dust, dust, and the like generated from the conveyed articles fall on the belt back surface 6 serving as the conveying surface, those causing a reduction in the friction coefficient fall into the concave portions of the uneven surface and are conveyed. It has a structure that does not easily adhere to the convex portion with which the object comes into contact. Also,
Since the paper debris and dust dropped into the concave portions are not under pressure from the articles, they have not yet reached the state where they have just adhered to the stacked state, and have been applied to the side of the belt while the belt 1 is running. Can be discharged.

As described above, the light transport belt 1 of the present invention
In the case of (1), the belt has a structure in which the coefficient of friction of the belt back surface 6 serving as the conveying surface is unlikely to be reduced over a long period of use. By making the surface uneven, the contact area between the conveyed object and the belt is smaller than that of a belt with a flat back surface, and the generated frictional force is small, but even if the frictional force is used for a long time. Without change
For a long time, reliable transport has been realized. Here, the light conveyed goods are paper money such as banknotes, cards, tickets, and postcards, coins, and the like.
It is a small belt having a width of about 800 mm and a width of about 2 to 150 mm. In a case where the belt is used for conveying A1 size paper, for example, a circumference of 2000 mm and a width of 600 mm are used.
The size of the belt is as follows.

[0029]

The present invention will be specifically described below with reference to examples and comparative examples.

(Example 1) A chloroprene rubber having crystal resistance is used for a belt body. The tooth cloth 8 is made of a warp yarn composed of 140 denier 6 nylon and 40 denier 6 nylon and a 40 denier urethane elastic yarn. Vibration at about 1/1 of the width during weaving
After shrinking between the two widths, the canvas was subjected to RFL solution (resorcinol 10.0, formalin (37%) 15.0, caustic soda 1.0, VP latex 400, CR latex 40
0, water 1000), 0.5 kg on a pair of rolls
f / cm ² (gauge pressure), and then dried. The treated canvas is immersed in the same RFL solution, squeezed with the same squeezing pressure, dried, and the solid content of the RFL solution is reduced. 40
The tooth cloth was used as a weight part. Incidentally, the solid content adhesion amount of the RFL liquid was calculated as [weight of canvas after treatment−weight of untreated canvas] × 100.
(%). This tooth cloth was wound around a mold having a tooth profile on the surface.

[0031] The core wire 3 was wound spirally thereon. As a core wire, a glass fiber filament having a wire diameter of 9 μm is bundled to form a strand, and this strand is immersed in an RFL solution and dried at 250 ° C. for 2 minutes. It is a cord consisting of ECG-150-3 / 0 twisted with a twist number of / 10 cm.

After the core wire is wound spirally, the unvulcanized rubber sheet of the chloroprene rubber is wound thereon. Separately, 100 parts by weight of chloroprene rubber was dissolved in 150 parts by weight of toluene, and alumina (Sankei White (WA) # 24 manufactured by Heisei Sankei Co., Ltd.) was added to the rubber paste.
0, 10 steps Mohs hardness 9, average particle diameter 80 μm) 20
A mixture prepared by mixing 0 parts by weight is applied to a release paper, and heated at 153 ° C. for 5 minutes on a hot plate to form a vulcanized sheet. This is wound around the entire surface of the unvulcanized rubber sheet wound around the mold, and further covered with a jacket from above, and vulcanized in a vulcanizing can. The belt sleeve obtained by vulcanization is cut to a predetermined width, and the circumference having a conveying surface on the back is 1
A toothed belt having a width of 6.4 mm and a width of 6.4 mm was obtained as a specimen.

(Comparative Example 1) A belt was prepared in the same manner as in Example 1 except that no alumina was arranged on the back surface of the belt, and a test piece was prepared.

In order to evaluate the characteristics of the belts in Example 1 and Comparative Example 1, the card take-in force and the change in friction coefficient due to the adhesion of the oil viscosity solution were measured, respectively.

(Card Take-in Force) As shown in FIG.
A card transporting apparatus was manufactured in which the cards were conveyed while being held between the backs of the belts. In addition, 10 cards
2,000 sheets were conveyed, and the card take-in force was measured according to the number of cards passed. The card take-in force was measured using a card 42 with a spring-only hook attached to the end of the card.
Was loaded into the conveying device, and the card and belt slipped so that the card was not conveyed, and the reading of the spring 44 at that time was used as the card take-in force. FIG. 9 shows the relationship between the number of cards passed and the card take-in force.

(Friction Coefficient) Next, Example 1 and Comparative Example 1
Were immersed in an oil viscosity solution (solution in which 5 g of oil viscosity was dissolved in 180 cc of ethanol) an arbitrary number of times, and the change in the coefficient of friction between the belt and the card was measured. The measurement was performed using the measuring device shown in FIG. That is, the prepaid card 42 is placed on the base plate 41 with the magnetic surface facing upward, and the back of the cut piece 45 having a width of 6.4 mm and a length of 20 mm cut from the toothed belt 1 is placed on the prepaid card 42 so as to face down. A weight 43 having a weight of 100 g (= M) connected to the spring 44 is placed on the cut-out piece 45 of the belt 1 with a transfer tooth.
The maximum scale of the spring 44 when the sample No. 2 was moved in the direction of the arrow at a moving speed of 300 mm / min was read as a frictional force F, and calculated as a frictional coefficient μ = F / M. FIG. 11 shows a change in frictional force with respect to the number of application of the oil clay solution.

As can be seen from FIG. 9, in the first embodiment, the card take-up force in the initial stage before passing through the card is the same as in the first comparative example.
Although the value is smaller than that, the value does not decrease even if the number of cards passing through increases, confirming the effect of projecting particles on the back surface of the belt in the present invention.

Further, as shown in FIG.
It was confirmed that even when the number of times of applying the oil clay solution was large, the decrease in frictional force was small.

[0039]

As described above, according to the first aspect of the present invention, the particles for conveyance are continuously or intermittently protruded and arranged on the back surface of the belt serving as the conveyance surface, and the conveyance surface is formed as an uneven surface. This makes it possible to maintain a stable conveying force without a decrease in the friction coefficient and the card take-in force even after long-term use.

According to the second aspect of the present invention, by arranging three or more particles having a 10-step Mohs hardness on the conveying surface,
The effect of the invention of claim 1 is further ensured.

According to the invention of claim 3, claims 1 and 2
In addition to the effect described above, the effect of suppressing the attached matter from the transported object is obtained.

According to the fourth aspect of the present invention, it is possible to convey a lightly conveyed object such as a banknote, a card, a postcard or the like to which oil or water droplets, etc., of human hands easily adhere.

[Brief description of the drawings]

FIG. 1 is a cross-sectional perspective view from the back side of a belt in which particles according to the present invention are arranged on the back side.

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

FIG. 3 is a cross-sectional perspective view from the cloth side of a belt in which the particles according to the present invention are arranged on the back surface.

FIG. 4 is a schematic side view showing a usage example of the present invention.

FIG. 5 is an embodiment of a method for arranging particles on the back surface of a belt according to the present invention.

FIG. 6 is an embodiment of a method for arranging particles on the back surface of a belt according to the present invention.

FIG. 7 is an embodiment of a method for arranging particles on the back surface of a belt according to the present invention.

FIG. 8 is a schematic diagram of a card take-in test using a belt with a conveying gear according to the present invention.

FIG. 9 is a diagram showing the relationship between the number of cards passed and the card take-in force.

FIG. 10 is a schematic view of a measuring instrument used for measuring a coefficient of friction.

FIG. 11 is a graph showing the relationship between the number of oil clay solution applications and the coefficient of friction.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 belt 2 back 3 core 4 inner peripheral surface 5 tooth 6 back 7 particle 8 tooth cloth 42 prepaid card 44 spring only

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Nishio 4-1-1-21 Hamazoe-dori, Nagata-ku, Kobe-shi, Hyogo Inside Mitsuboshi Belting Co., Ltd. No. 21 Mitsuboshi Belting Co., Ltd. (72) Hiroshi Tsunemitsu Inventor Hiroshi Tsuneme 4-1-1, Hamazoe-dori, Nagata-ku, Kobe-shi, Hyogo F-term inside Mitsuboshi Belting Co., Ltd. 3F049 AA08 BA02 DA02 DB02 LA08 LA09 LA10 LB09 LB05 LB05 LB09

Claims (5)

[Claims] 1. A transport belt for transporting a lightly conveyed object by using a frictional force between the surface of the belt and the lightly conveyed object using one surface of the belt. A light-conveying belt characterized in that particles are arranged so as to protrude and a convey surface is made uneven. 2. The light conveying belt according to claim 1, wherein the particles have a Mohs hardness of 10 or more and 3 or more. 3. The light transport belt according to claim 1, wherein the particles are at least one kind of abrasive material selected from ceramic particles, ceramic whiskers, mineral particles, and metal particles. 4. The method according to claim 1, wherein said particles have a particle size of 10 μm or more and 100 μm or more.
The light transport belt according to any one of claims 1 to 3, wherein the thickness is 0 µm or less. 5. The light conveyed object is a bill, card, ticket,
The light transport belt according to any one of claims 1 to 4, wherein the belt is a paper sheet such as a postcard or a coin.