JPS6337047A - Conveyor for paper sheet - Google Patents

Abstract

PURPOSE:To aim at contraction in space and reduction in cost, by pressing a pinch roller in taction by a conveyor belt in a return pass side conveying passage, and driving it via a broad belt. CONSTITUTION:When the mail P so far conveyed as being held between a lower conveyor belt 2a and an upper conveyor belt 3 reaches a pressure-contact device 11, the whole surface of the mail P is pressed to a detection surface of an optical information reader 1 by both pinch rollers 5a and 5b via a broad belt 14 and an outward pass side conveyor belt 3a. When the mail P thicker than an ordinary one has been conveyed to this pressure-contact device 11, these pinch rollers 5a and 5b are rotated in direction separating from the reader 1 according to thickness of the mail P. However, since these pinch rollers 5a and 5b receive a pinch function from a return pass side conveyor belt 3b via the broad belt 14 and presses the mail P in contact, they can press the whole surface of the mail P to the detection surface of the reader 1 all the time without being influenced by thickness of the mail P.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention is directed to, for example, an optical information reading device disposed on a mail conveyance path, and a mail object being pressed against the detection surface of the reading device. The present invention relates to an improvement in a paper sheet conveying device suitable for conveying paper sheets.

(Prior Art) Conventionally, for example, in an automatic mail processing device, as shown in FIG. 2, in order to convey a mail (P) while holding it on the upper surface of an optical information reading device (1), that is, on the detection surface, the mail is divided into two parts. lower transmission belts (2a) and (2b).

A conveyance path (4) is formed by stretching an upper conveyor belt (3) in contact with these lower conveyor belts (2a) and (2b), and a pinch roller (5a) is also formed on the upper conveyor belt (3). ) and (5b) are provided in contact with each other, and a leaf spring (6) is connected and pivoted to the shafts of these pinch rollers (5a) and (5b), and the conveyance path (4)
The reading rate is improved by pressing the mail (P) conveyed above against the detection surface of the reading device (1) by the elastic force of the leaf spring (6).

Also, in Figure 3, the entire surface of the mail is optically humanistic +41! This shows an example of an improved device that can be pressed against the sensing surface of a reading device. That is, the upper conveyor belt (3) includes a drive roller (7) and a pinch roller (5a).

A belt (8) wound around (5b) is provided in contact with the pinch rollers (5a) and (5b), and springs (9a) and (9b) are respectively attached to the pinch rollers (5a) and (5b). The belt (8) presses the upper conveyor belt (3) via the pinch rollers (5a) and (5b) due to the tension of the belts 9a) and (9b). However, the pinch rollers (5a) and (5b
) is installed only in the automatic mail reading and sorting machine, and is not necessary for the automatic mail sorting, sorting, stamping machine that only detects information on whether a stamp is affixed to the mail (P). Not yet.

However, in recent years, it has become necessary to determine whether the mail is front or back based on character information written on the front or back of the mail, and an optical information reader (1) has been installed in the automatic sorting, sorting, and stamping machines mentioned above. It has become.

However, when the above-mentioned optical information reading device (1) is installed in a postal automatic sorting, sorting, and stamping machine, the automatic mail sorting, sorting, and stamping machine normally reads the entire surface of the mail (P) up to the front of the reading device. 1) A special roller is used to convey the stamp for reading, and in the stamp detection section and the stamping section, the stamp is conveyed while being held by a conveyor belt with a predetermined width in order to ensure the field of view for stamp detection and stamping range based on the results of full-surface scanning. It looks like this.

That is, the method of conveying the mail (P) on the detection surface of the optical information reading device (1) is different.

In addition, in Figure 1, the postal item (P) is detected by the optical information reader (
When the postal item (P) is conveyed to the detection surface in step 1), the center part of the mailpiece (P) has a weak pressure against the detection surface of the reader (1).
Therefore, there is a drawback that reading accuracy is adversely affected. In addition, in Fig. 2, the pressing force against the detection surface of the reading device (1) is strong, but a pinch mechanism and a drive source to drive the belt are required, so there is a problem that a large space must be provided. There is.

(Problems to be Solved by the Invention) The present invention has been made based on the above-mentioned circumstances, and the paper sheet processing units are arranged on the same conveyance path to convey the paper sheets, but the information reading device By attaching a means to press the entire surface of the paper sheet against the detection surface only in the front side of the detection surface, and by driving the drive source without providing a separate drive source, it is possible to reduce space and cost. The purpose is to provide a conveyance device for paper sheets.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the above problems, the present invention provides an endless annular conveyor belt that pinches and conveys paper sheets, and a conveyor belt that is close to the conveyor belt that forms an outbound conveyance path. An optical information IA1 reader is provided on the opposite side of the optical information reader across the conveyor belt of the outgoing conveyance path, and is installed on the opposite side of the optical information reader to optically read information on the paper sheets. A pair of rotatable pinch rollers presses the entire surface of the paper toward the reading device, and a wide belt wound around these pinch rollers is used as a pressure contact means. It is configured so that it is pressed into contact with a belt and driven via a wide belt.

(for production) That is, the present invention has the above configuration.

The above-mentioned pinch roller is driven by the conveyor belt on the return path, and the wide belt runs, and the entire surface of the sheet sandwiched by the conveyor belt is pressed against the detection surface of the optical information reading device by the wide belt, reducing the reading rate. You can improve your performance.

(Example) The present invention will be described below based on an example shown in FIG. In the figure, (1) is an optical information reading device that optically reads information on a postal item (P);
1) A row'/(IOa
) and (10b), respectively, are wound with endless annular lower transmission belts (2a) and (2b), and an endless annular upper conveyance belt ( 3) is stretched, and the above mail item (P
) is conveyed by being held between the conveyor belts (2) and (3).

Further, (tan) is a pressure contact means provided in contact with the upper part of the outgoing conveyance belt (3a) of the upper conveyance belt (3), and this pressure contact means (dan) is a support rod (12a).

Arm (13a), (13
a rotatable pinch roller (5a) that rotates via b);
, (5b) and these pinch rollers (5a), (
5b) and a wide belt (14) wound around the belt. Here, the width of the wide belt (14) is 10 compared to the width of the conveyor belts (2) and (3), which is 60+nu.
It is set to 0mm.

Furthermore, (3b) is a return transport belt provided so that the upper transport belt (3) is located on the pressure contact means (dan), and this return transport belt (3b) is connected to a pair of idlers provided apart from each other. The wide belt (14) is guided by rollers (15a) and (15b) and is driven from the pinch rollers (5a) and (5b) while being pressed against the optical information reading device (1) side. .

Next, the present invention based on the above configuration will be explained in detail.

Now, the lower conveyor belt (2a) and the upper conveyor belt (3)
The mail (P) that has been conveyed by being held between the pressure contact means (Dan)
When the mail item (P) reaches the wide belt (14
) and the optical information reading device (
1) is pressed against the detection surface. That is, mail (P)
The entire surface of the optical information reading device (1) is brought into close contact with the detection surface of the optical information reading device (1), so that information can be read reliably.

In addition, when a mail item (P) thicker than the normal 1-gauge is conveyed to the pressure contact means (1]), the pinch roller (5a)
, (5t)) rotate in a direction away from the optical end fK reader (1) depending on the thickness of the mail item (P). However, the pinch rollers (5a) and (5b) generate a pinch function via the wide belt (14) by the return conveyance belt (3b) and press the mail (P), so the pinch rollers (5a) and (5b) press the mail (P). Regardless of the thickness of the mail (
The entire surface of P) can be pressed against the detection surface of the optical information reading device (1).

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to always press the entire surface of the paper sheet against the detection surface of the reading device without changing the method of transporting the paper sheet to the optical information reading device. It is possible to operate the pinch mechanism by using the return of the conveyor belt without installing a pinch mechanism using leaf springs or drive rollers as shown in Figure 2, which reduces space and costs. It is effective.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a plan view of a conveying device for paper sheets 111' showing a conventional example, and FIG. 3 is a plan view of a conventional example improved from FIG. FIG. 3 is a plan view of the paper sheet Y1 conveying device. P...'tc Leaves (mail) 1... Optical information reading device 2a, 2b... Lower conveyor belt Death
・Upper conveyor belt 1-(conveyor belt) 3a...Outbound conveyor belt 3b...Return conveyor belt 5a, 5
b... Pinch roller Dan... Pressing means 14...
・Wide belt

Claims (1)

[Claims] an endless annular conveyor belt that pinches and conveys paper sheets; an optical information reading device that is provided in close proximity to the conveyor belt forming an outgoing conveyance path and optically reads information on the paper sheets; , a pair of rotatable pinch rollers that are provided on the opposite side of the optical information reading device across the conveyance belt of the outbound conveyance path and press the entire surface of the sheet toward the reading device; and these pinch rollers. and a pressing means consisting of a wide belt wound around a roller, the pinch roller being pressed by a conveyor belt on a return conveyance path and driven via the wide belt. Conveyance device.