JPH05221548A - Endless belt for conveying paper sheet - Google Patents

Abstract

PURPOSE:To improve a tear force in the peripheral direction of a belt by interposing short fibers between upper and lower layers. CONSTITUTION:In an endless belt 1 for conveying paper sheets in many directions in its state to nip the paper sheets, a short fiber-mixed rubber layer 5 wherein short fibers 4 are oriented in the peripheral direction of the belt is formed at least in one layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an endless belt for conveying paper sheets, and more particularly to measures for cutting.

[0002]

2. Description of the Related Art Generally, ATM (automated teller mac)
cash deposit payment machines such as hine) and CD (cash dispenser),
In an automatic ticket gate or the like, as shown in FIG. 2, a paper sheet a such as a bill or a ticket is sandwiched between two endless belts c and d wound around pulleys b and b, and is placed in multiple directions. It is being transported.

By the way, a paper jam may occur when the paper sheets are sandwiched between the endless belts and conveyed, or when the paper sheets are transferred between the endless belts. In this case, it is necessary to open the lid of the case that houses the machinery of the transport device to remove the jammed paper sheets from the paper jam location, but at that time the endless belt may come off the pulley. If the lid is closed without doing so, the detached endless belt may be caught. When the transport device is operated in this state, the detached endless belt is pulled and cut.

Therefore, as disclosed in, for example, Japanese Patent Publication No. 59-24684, it is common to improve the tearing force in the belt circumferential direction by embedding a seamless woven fabric in the belt body.

[0005]

However, since this kind of endless belt is generally used in a constant stretched state (for example, 5% stretched), it has elasticity as a woven fabric embedded in the belt body. However, the present situation is that the rate of contribution to the improvement of the tearing force is small and the state is not satisfactory.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an endless belt in which the tearing force in the belt circumferential direction is further improved by appropriately interposing short fibers. To do.

[0007]

In order to achieve the above-mentioned object, the solution means of the present invention is an endless belt for conveying paper sheets which is conveyed in multiple directions while sandwiching the paper sheets, in the circumferential direction of the belt. That is, at least one short fiber-mixed rubber layer in which short fibers are oriented is provided.

[0008]

According to the present invention, since the short fibers in the short fiber mixed rubber layer are oriented in the belt circumferential direction in the present invention, the rigidity in the belt circumferential direction is increased due to the anisotropy, and the belt circumferential direction is increased. The tearing force against the rubber is further improved and it becomes difficult to cut.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an endless belt 1 for conveying paper sheets according to an embodiment of the present invention. In the figure, 2 is an upper rubber layer made of synthetic rubber such as thermosetting polyurethane rubber, acrylonitrile rubber, polybutadiene rubber and hypalon rubber, and 3 is a lower rubber layer also made of synthetic rubber such as thermosetting polyurethane rubber. Between the upper rubber layer 2 and the lower rubber layer 3, for example, polyester short fibers, nylon short fibers, and aramid short fibers are formed in synthetic rubber such as thermosetting polyurethane rubber made of the same material. A short fiber mixed rubber layer 5 as an intermediate rubber layer in which the short fibers 4, 4, ... Are oriented in the belt circumferential direction is integrally interposed.

The short fiber mixed rubber layer 5 has a diameter of 5
The fiber length is preferably 0 μm or less, and the fiber length is preferably a large aspect ratio, but may be about 0.5 to 3 mm, and is preferably within the above range from the thickness and configuration of the endless belt 1. You can select the right one.

The short fiber mixed rubber layer 5 is preferably provided in the vicinity of the belt conveying surface because it is desired to bring the pitch lines close to each other when the rubber layer 5 is sandwiched between the endless belts 1 and 1 and conveyed, but other than this. It may be.

The rubber constituting the upper rubber layer 2, the lower rubber layer 3 and the short fiber mixed rubber layer 5 includes carbon black for reinforcing rubber, conductive carbon black for imparting conductivity, and cold resistance. You may mix | blend things other than the short fiber 4, such as a plasticizer for provision.

The endless belt 1 constructed as described above is wound around the pulleys b and b of the conveying device laid out, for example, as shown in FIG. 2, and conveyed in multiple directions with the paper sheet a sandwiched therebetween. It is designed to do.

As described above, in this embodiment, since the short fibers 4, 4, ... In the short fiber mixed rubber layer 5 are oriented in the belt circumferential direction, the rigidity in the belt circumferential direction is caused by the anisotropy. It can be increased and the tearing force in the belt circumferential direction can be further improved, making it difficult to cut.

In the above embodiment, the case where the short fiber mixed rubber layer 5 is provided by one layer is shown. However, the present invention is not limited to this, and for example, two or more layers may be provided. You may use together with. Further, the rubber forming the upper rubber layer 2, the lower rubber layer 3 and the short fiber mixed rubber layer 5 is not limited to synthetic rubber, and other thermoplastic elastomer may be used.

(Specific Example) A sheet was prepared by dispersing aramid short fibers 4, 4, ... In a thermosetting polyurethane rubber so as to be oriented in the belt circumferential direction, and the short fibers were not mixed from the top and bottom of the sheet. Sandwiched with thermosetting polyurethane rubber to make a three-layer structure, vulcanized and then subjected to polishing processing, upper rubber layer 2; 200 μm, short fiber mixed rubber layer 5; 200 μ
m, lower rubber layer 3; an endless belt 1 having a thickness of 300 μm was molded. The breaking stress of the obtained endless belt 1 was 20 MPa.

Comparative Example A polyester woven fabric core was interposed in a thermosetting polyurethane rubber in which short fibers were not dispersed, vulcanized, and then ground to form an endless belt.
The breaking stress of the obtained endless belt was 16 Mpa.

[0019]

As described above, according to the present invention,
Since at least one short fiber mixed rubber layer is provided and the short fibers in the short fiber rubber layer are oriented in the belt circumferential direction, the rigidity in the belt circumferential direction is increased by the anisotropy of the short fibers and the tearing force in the belt circumferential direction is increased. Can be further improved to make it difficult to cut.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of an endless belt.

FIG. 2 is an explanatory diagram illustrating a usage state of an endless belt.

[Explanation of symbols]

 1 Endless belt 4 Short fibers 5 Short fiber mixed rubber layer a Paper sheets

Claims (1)

[Claims] 1. An endless belt for conveying paper sheets in which paper sheets are sandwiched and conveyed in multiple directions, wherein at least one short fiber-mixed rubber layer in which short fibers are oriented in the belt circumferential direction is provided. An endless belt for transporting paper sheets, characterized by having