JPS6251504A - Flat belt for papers conveyance - Google Patents

Abstract

PURPOSE:To improve handling efficiency, by a method wherein the core of a flat belt is formed using holed cloth in which holes are formed. CONSTITUTION:Holes in a circle or the like are formed in cloth to form a holed cloth 1a, and the cloth 1a is covered with rubber to form a flat belt. This constitution increases elongation, produces a resilient belt having stretch ability, and facilitates mounting of the belt to a device and regulation thereof.

Description

[Detailed description of the invention] [Background and purpose of the invention] The present invention relates to a flat belt for conveying paper.

BACKGROUND ART Belts with cores made of woven nylon or polyester have been used as flat belts for conveying paper. Belts obtained by covering this woven fabric with rubber such as urethane rubber, chloroprene rubber, nitrile rubber, or hypalon rubber (chlorosulfonated polyethylene) as a core are characterized by very little elongation and high rigidity. Therefore, it is not easy to adjust the tension when there is a difference in belt circumference, and the handling is poor. Furthermore, the capacity of the drive motor must be increased, making the device bulky.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a flat belt for conveying paper that can be easily handled.

[Summary of the Invention] That is, the present invention provides a flat belt for conveying paper, which is composed of a core body and a rubber coated on the core body, and which conveys paper by sandwiching it therebetween, in which the core body is made of a woven fabric. It is characterized by being made of a perforated woven fabric with holes, which increases the elongation of the core.

[Example] The present invention will be described below based on the illustrated example. An embodiment of the present invention is shown in FIGS. 1 and 2. FIG.

As shown in the figure, the flat belt for conveying paper has a core body 1.
, it is composed of a rubber 2 coated on this core body 1. In this embodiment of the flat belt constructed as described above, the core 1 is formed of a perforated woven fabric 1a in which holes are formed in the woven fabric. By doing this, the core body 1 is formed of the perforated woven fabric 1a, and the elongation of the core body 1 becomes large, making it possible to improve the handling properties of the paper conveying flat belt. can be obtained.

That is, the core body 1 was formed from a perforated woven fabric 1a, and the perforated woven fabric 1a was formed by providing circular holes 3 in the woven fabric.

By doing so, the perforated woven fabric 1a can easily stretch and deform both vertically and horizontally, making it possible to increase the stretch of the flat belt and making it easier to handle. be able to. In this case polyester,
It is preferable that the perforated woven fabric 1a made of a material such as polyamide, rayon, or cotton is not too thick.

A wall thickness of about 0.05mm to 0.50mm is good, and 10
A woven fabric is made using a thread having a denier to 420 denier or an equivalent count, and a flat belt using this woven fabric can be easily manufactured. For example, rubber 2a is coated on a metal core by extrusion, a perforated woven fabric 1a is inserted thereon, and rubber 2b is further coated on top of it by extrusion.

A pressure tape made of rubber or cloth is then wrapped around this, and the material is placed in a vulcanizing can and vulcanized.

FIG. 3 shows a further embodiment of the invention.

In this example, the perforated woven fabric 1b was formed by providing diamond-shaped holes 4 in the woven fabric. By doing this, the core body is formed of the perforated woven fabric 1b provided with diamond-shaped holes 4, and although it is relatively difficult to stretch left and right, it is easy to stretch up and down, which is different from the case described above. Similar effects can be achieved.

The results of examining the effects of the above embodiments will be described below. Figure 4 shows the results of examining the relationship between tensile strength and elongation for flat belts of the conventional example and this example (using a perforated woven fabric with circular holes in the core). There is. As is clear from the figure, the flat belt of this example has a greater elongation for the same tensile strength than the flat belt of the conventional example, and this tendency increases as the tensile strength increases. The reason why the elongation of the flat belt of this example was greater than that of the conventional example is due to the use of a perforated woven fabric as the core woven fabric.

As described above, according to this embodiment, compared to a flat belt using a conventional woven fabric, (1) elongation is increased, and an elastic belt with stretchability is obtained. (2) Length adjustment and tension adjustment can be easily performed when assembling into a device. (3) The capacity of the drive motor of the device can be reduced.

(4) Since the covered rubber pieces are integrated through the holes in the woven fabric and a strong adhesive force is obtained, a highly reliable flat belt can be obtained. (5) By changing the shape of the hole (not only circular and rhombic shapes but also any other shapes can be formed by punching), any tension can be achieved.
A flat belt with elongation properties can be obtained.

[Effects of the Invention] As described above, according to the present invention, the flat belt has good handling properties, and it is possible to obtain a flat belt for paper conveyance that has good handling properties.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an embodiment of a flat belt for paper conveyance of the present invention, and FIG. 2 is a plan view of a perforated woven fabric of the same embodiment.
FIG. 3 is a plan view of another perforated woven fabric of the flat belt for paper conveyance of the present invention, and FIG. 4 is a characteristic diagram showing the relationship between the tensile strength and elongation of the conventional flat belt and the flat belt of this embodiment. . DESCRIPTION OF SYMBOLS 1... Core body, 1a, 1b... Woven fabric with holes, 2.2a, 2b... Rubber, 3... Circular hole, 4... Diamond-shaped hole. Agent Patent Attorney Fujio Sato Figure 1 10 Wakuni / ゐ / 4″! + - Ward (%)

Claims (3)

[Claims] (1) In a flat belt for transporting paper, which is composed of a core and a rubber coated on the core, and which transports paper while sandwiching the paper, the core has holes made in the woven fabric. A flat belt for conveying paper, characterized in that it is made of woven fabric. (2) The flat belt for paper conveyance according to claim 1, wherein the perforated woven fabric is a woven fabric provided with circular holes. (3) The flat belt for paper conveyance according to claim 1, wherein the perforated woven fabric is a woven fabric in which diamond-shaped holes are provided.