JPH04125239A - Endless belt for conveying sheet and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide an endless belt for conveying sheet such as bank notes, having a low cost and being prevented from laterally oscillating and irregularly running, by embedding textile fabric in the endless belt along the outer surface and embedding reinforcing cores at equal intervals in the widthwise direction of the endless belt so as to make the cores into close contact with the inner side of the textile fabric. CONSTITUTION:A conveying belt 11 is the so-called T-like belt in which a ridge 13 is formed along the entire periphery of the conveying belt 11 at the widthwise center of the rear surface 12b of a belt body 12 having a front surface 12a serving as a conveying surface. Further, textile fabric 14 is embedded in the belt body 12 along the front surface 12a, and reinforcing cores 15 are embedded in the rear side surface 12b of the belt body so as to make contact with the textile fabric 14, at equal intervals in the widthwise direction of the belt body. The embedded positions of the reinforcing cores 15 are regulated by the thickness of the fabric 14 so as to be uniform, thereby it is possible to prevent occurrence of lateral oscillation and irregularity in running, substantially.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides an endless belt for conveying paper sheets suitable for reading and conveying banknotes and magnetic cards in currency exchange machines, cash dispensing machines, etc., and a method for manufacturing the same. Regarding.

<Prior Art> Endless elastic belts have conventionally been used in currency exchange machines, cash dispensing machines, etc. to convey paper sheets such as banknotes and magnetic cards. Among such endless belts, flat belts and timing belts have the disadvantage of large lateral vibrations. Also, with belts, even slight wear on the sides of the belt can cause the belt to fall deep into the V-pulley, causing the rotational speed and belt to deteriorate. Since it has the disadvantage that the running surface changes greatly, so-called single-shaped belts are often used.

Here, an example of a single-shaped belt is shown in FIG. As shown in the figure, the T-shaped belt 1 has a protrusion 3 formed at the center in the belt width direction on the back surface 2b of the belt main body 2 whose surface 2a is the conveying surface and extends all around the belt length direction. In addition, reinforcing core bodies 4 are spirally embedded in the central part of the belt body 2 in the thickness direction at equal intervals (equal pitch) in the belt width direction.

However, even with such a T-shaped belt, lateral vibration of 0.4 to 0.7 wa may occur in the belt width direction during driving.
This may cause problems in reading cards, etc. It has been found that the cause of this is that the reinforcing core bodies are buried at different positions in the belt in the thickness direction, and that the reinforcing core bodies elongate during driving. Further, such inconvenience also occurs in flat belts having a reinforcing core.

Therefore, as a method to improve this drawback, the surface of the semi-vulcanized rubber cylinder was polished, a reinforcing core was wound around it in a spiral shape at equal pitches using a thread winder, and unvulcanized rubber was coated on top of the reinforcing core. A method of post-vulcanization has been proposed (Japanese Patent Publication No. 60-34450).

<Problems to be Solved by the Invention> However, the above-mentioned method has a problem in that the number of steps is large and the cost is high.

On the other hand, belts for reading and transporting paper sheets are required to have accurate speed transmission, stable running performance, excellent transportability, and to be inexpensive.

In view of the above circumstances, an object of the present invention is to provide an endless belt for conveying paper sheets in which the reinforcing core is embedded in a constant position and is inexpensive, and a method for manufacturing the same.

Means for Solving the Problems〉 The paper sheet conveying belt according to the present invention that achieves the above object has the following features:
An endless belt for conveying paper sheets, characterized in that a woven fabric is embedded along the surface, and reinforcing core bodies are embedded closely on the inside of the woven fabric at equal intervals in the width direction of the belt. In addition, the method for manufacturing a paper sheet conveying belt according to the present invention includes covering a vulcanized core metal with a woven fabric, impregnating it with unvulcanized rubber, and then applying a reinforcing core body onto the woven fabric surface using a thread winding machine. It is characterized in that it is wound in a spiral shape at equal intervals in the width direction of the belt, and then covered with unvulcanized rubber and vulcanized by applying pressure and heating.

Function> In the paper sheet conveying belt having the above structure, the reinforcing core body is buried in close contact with the woven fabric buried along the surface, so that the buried position of the reinforcing core body in the belt thickness direction is in close contact with the woven fabric buried along the surface. It is regulated by the thickness and becomes constant.

On the other hand, in the manufacturing method having the above configuration, when the reinforcing core is spirally wound at equal intervals in the belt width direction on a woven fabric covered with a vulcanized core metal and impregnated with unvulcanized rubber, the belt is The position of the reinforcing core from the mold surface is easily determined by the thickness of the woven fabric, and a product in which the embedded position of the reinforcing core in the belt thickness direction is constant can be manufactured at low cost.

Example of implementation Hereinafter, the present invention will be explained based on examples.

FIG. 1 shows a paper sheet conveying belt according to one embodiment. As shown in the figure, this conveyor belt 11 has a so-called T-shape in which a protrusion 13 is formed at the center in the width direction of the back surface 2b of the belt main body 12 with the surface 12m serving as the conveyance surface. It is a type belt. A woven fabric 14 is embedded along the surface 12a of the belt main body 12, and a reinforcing core 15 is attached to the back surface 2b of the woven fabric 14 so as to be in close contact with the woven fabric 14. They are buried at equal intervals in the width direction. In this conveyor belt 11, the buried position of the reinforcing core body 15 in the belt thickness direction is regulated by the thickness of the woven fabric 14 and remains constant, so that rolling and running unevenness hardly occur during driving and running.

In addition, in the present invention, woven fabric includes not only a fabric woven with two threads but also a fabric woven with two threads (usually referred to as a knitted fabric), and preferably has a uniform thickness. It is better to use an endless one.

In addition, in the present invention, it is preferable to use a material with a high Young's modulus as the reinforcing core in terms of belt performance, such as cotton thread,
Polyester yarn, aromatic polyamide yarn, glass m fiber, etc.
The yarn may be selected from twisted yarns and filament yarns with low elongation.

Next, an example of manufacturing the above-mentioned conveyor belt 11 will be shown.

First, a vulcanized core metal is covered with an endless woven fabric having a uniform thickness, and then the endless woven fabric is impregnated with unvulcanized rubber. Next, the reinforcing core is spirally wound at equal pitches onto the woven fabric using a thread winder. Here, the winding pitch is 0.
It is preferable to select from the range of 3 to 1.0 m. After that,
The reinforcing core is coated with unvulcanized rubber to a certain thickness, and then properly vulcanized by applying pressure and heating. The proper vulcanization here depends on the type of rubber,
Although it varies depending on the formulation, usually 60 minutes at a steam pressure of 4 kg/cn (approx. Product.

As explained above, in the conveyor belt 11, the embedded position of the reinforcing core body 15 in the belt thickness direction is determined by the thickness of the woven fabric 14, so the number of steps can be reduced compared to the conventional method.
Can be manufactured at low cost. By the way, the conventional method
34450)), the manufacturing cost was reduced by about 20%.
% can be reduced.

When we compared the performance of the conveyor belt 11 described above and the conveyor belt manufactured by the conventional method mentioned above (see Japanese Patent Publication No. 60-34450), we found that the maximum horizontal vibration during driving was about 0.1+m, which is quite impressive. It never happened. When used in the conveyor belt of a card reader, the same level of data was obtained, confirming that both had high performance.

In the above embodiments, a single-shaped belt was used as an example, but it goes without saying that the effects of the present invention can be obtained even when applied to a flat belt or the like.

<Effects of the Invention> As explained above, according to the present invention, since the buried position of the reinforcing core in the belt thickness direction can be determined, a high-performance conveyor belt without rolling and running unevenness can be provided at low cost. can.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conveyor belt according to one embodiment, and FIG.
The figure is an explanatory view showing a conveyor belt according to the prior art. In the drawings, 11 is a conveyor belt, 12 is a belt body, 12m is a conveyance surface, 12b is a back surface, 13 is a protrusion, 14 is a woven fabric, and 15 is a reinforcing core.

Claims (2)

[Claims] (1) An endless belt for conveying paper sheets, in which a woven fabric is embedded along the surface, and reinforcing core bodies are embedded closely inside the woven fabric at equal intervals in the width direction of the belt. An endless belt for conveying paper sheets. (2) After covering the vulcanized core metal with a woven fabric, impregnating it with unvulcanized rubber,
Next, the reinforcing core is spirally wound on the woven fabric surface using a thread winding machine at equal intervals in the width direction of the belt, and then unvulcanized rubber is coated and vulcanized by applying pressure and heating. A method of manufacturing an endless belt for conveying paper sheets.