JP2511635B2 - Paper transport device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying device,
In particular, the present invention relates to a paper sheet conveying device that conveys paper sheets by frictional force.

[0002]

2. Description of the Related Art When a paper sheet is conveyed by a conventional paper sheet conveying apparatus, for example, as disclosed in Japanese Patent Laid-Open No. 60-142371, the conveyance force for conveying the paper sheet is given by the thickness of the paper sheet. Detecting the difference in the frictional force between the paper sheet and the roller-like structure such as the conveyance roller that supports the paper sheet due to the difference in the thickness of the paper sheet, the conveyance force is detected based on this detection result. Was dealt with by changing.

[0003]

In this conventional paper sheet conveying apparatus, since the contact area between the paper sheet and the conveying surface for transmitting the conveying force is always constant, it is particularly strong for very thin paper sheets. When a conveyance force is applied to a paper sheet that is easily wrinkled or torn due to the conveyance force, a large force is applied to the contact part, and stable conveyance cannot be performed. There was a problem.

The object of the present invention is to solve the above-mentioned problems,
A paper sheet conveying device that can perform stable conveyance even for paper sheets that are prone to wrinkles and tears due to the conveying force.
To provide .

[0005]

SUMMARY OF THE INVENTION In a paper sheet conveying apparatus of the present invention, an endless type conveying belt is provided with a motor and the motor.
A pair of belt support rollers arranged at positions opposite to each other
Circulate circumscribed to each rotation axis of the
By the conveyor belt that moves between a pair of belt support rollers,
Paper sheets are pressed against each other and a conveying force is applied to the sheets to convey them.
And the size of the light transmission amount of the paper sheets.
And a thickness detecting means for detecting the thickness of the paper sheet,
Based on the detection result of the thickness detecting means, the rotation speed of the motor is
By controlling the luck, the paper by the conveying means
Conveying force adjusting means for adjusting the conveying force for the leaves, and
Based on the detection result of the thickness detection means, the position of the motor
And one of the pair of two belt supporting rollers.
By changing the arrangement position,
Change the pressing area of the conveyor belt against the paper sheets.
Pressure contact area adjusting means for
It

[0006]

[0007]

[0008]

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a basic configuration diagram of an embodiment of the present invention. In this embodiment, a conveying unit 1 that presses a sheet 100 on a conveying body (not shown) and conveys it in the conveying direction indicated by an arrow, and a thickness detection that detects the thickness of the sheet 100 based on an optical method. Means 2
And the conveying means 1 based on the detection result of the thickness detecting means 2.
The press-contact area adjusting means 3 for adjusting the press-contact area of the paper sheet 100 by the paper feeding means 100 and the conveying force adjusting means 4 for adjusting the conveying force of the conveying means 1 based on the detection result of the thickness detecting means 2 are provided. The pressure contact area and the conveyance force are controlled on the basis of the detection result of the thickness detecting means 1 in the conveyance of the class 100 so that wrinkles and tears do not occur even in the case of extremely thin paper sheets.

[0010] Figure 2 is a specific configuration diagram of an embodiment of the present invention. The paper sheet conveying apparatus shown in FIG. 2 includes a motor 13, a pair of belt support rollers 18a,
18b, transport roller 20, spring 17, and transport belt 1
5, a thickness detection unit 11 and a determination unit 12 that form the thickness detection unit 2, a motor control unit 14 that forms the conveyance force adjustment unit 4, and a motor position adjustment unit 16 that forms the press contact area adjustment unit 3 . In addition to the motor mounting table 19, the belt supporting rollers 18a and 18b and the spring 17 which are shared with the conveying means 1 are included.

The thickness detection unit 11 has a light emitting diode 111 and a light receiving diode 112, and detects the thickness of the paper sheet 100 based on the light receiving level of the light receiving diode 112.

The determination unit 12 has an optimum conveying force 1201 and a pressure contact area 120 corresponding to the thickness detected by the thickness detection unit 11.
The data of No. 2 and the data of No. 2 are sent to the motor control unit 14 and the motor position adjusting unit 16 , respectively. The determination unit 12 uses the paper sheet 10
Optimal conveying force and pressure contact area for each thickness of 0
Data in advance. The term "optimal" here means a state in which there is no excess or deficiency that does not cause defects such as wrinkles and tears in the paper sheet 100.

The motor control unit 14 adjusts the torque of the motor 13 so that the motor control unit 14 has a torque corresponding to the carrying force 1201 provided from the determination unit 12.

The motor 13 is mounted on a motor mounting base 19, and the motor mounting base 19 has a hydraulic cylinder which is mounted on a mounting base (not shown) and is connected to the motor position adjusting unit 16 so that the motor position adjusting unit 16 has it. Hydraulic control system 16
It is moved up and down by 1. Motor position adjustment unit 1
Reference numeral 6 controls the hydraulic control system 161 according to the data of the pressure contact area 1202 output from the determination unit 12, and when the pressure contact area is reduced , the motor 13 is vertically upward, and the pressure contact area is also increased. In order to make the motors larger , the motors 16 are moved vertically downward by driving the motor mounting bases 19, respectively.

The motor 13 is adjusted by the motor position adjusting unit 16.
Of the belt supporting rollers 18a and 18b which are rotated in pressure contact with the conveyor belt 15 by vertically moving the position of the belt supporting roller 18b which is pulled rightward in the drawing by the spring 17 and is conveyed by the vertical movement of the motor 13. Since the length of the belt 15 is constant, the belt 15 moves left and right, and as a result, the contact area between the conveyor belt 15 and the paper sheet 100 can be changed, and as a result, even for thin paper sheets 100. The conveyance can be stabilized.

The d0 shown in FIG. 2 is the pressure contact distance, and the pressure contact area is determined by the pressure contact distance d0 at which the conveyor belt 15 is in pressure contact with the paper sheet 100 and the width of the conveyor belt 15. Therefore, by changing the pressure contact distance d0. The pressure contact area can be adjusted.

FIG. 3 is an explanatory view of the operation of the embodiment of the present invention when the contact area is reduced (a) and enlarged (b). FIG.
As shown in (a), the position of the motor 13 is the transport surface (pressure contact surface).
When it is separated from the belt support roller 18a,
The distance 18b and the motor 13 is increased, the belt supporting rollers 18b the distance between the belt supporting rollers 18b since the move to the left and right by a spring 17 is pulled to the belt supporting rollers 18 a side belt support rollers 18a and 18b is shortened . On the contrary, when the position of the motor 13 is close to the conveyance surface as shown in FIG. 3B, the motor 13 and the belt support roller 18a
And the belt supporting roller 18b is pulled by the spring 17 and moves in the direction opposite to the belt supporting roller 18a, and the distance between the belt supporting rollers 18a and 18b becomes longer. In this way, in the case of FIG.
The press contact area between the conveyor belt 15 and
In the case of (b), the press contact area becomes large. Due to the change in the pressure contact area and the change in the above-described conveying force, it is possible to ensure stable conveyance without wrinkles or tears even with the very thin paper sheet 100.

[0018]

As described above, according to the present invention, it is possible to detect the thickness of a sheet and optimally set the conveying force for conveying and the pressing area for the sheet in correspondence with the detected thickness value. By having the above, there is an effect that it is possible to carry out stable conveyance that does not depend on the thickness and strength of the paper sheet.

[Brief description of drawings]

FIG. 1 is a basic configuration diagram of an embodiment of the present invention.

FIG. 2 is a specific configuration diagram of an embodiment of the present invention.

FIG. 3 is an explanatory diagram of an operation during reduction (a) and during enlargement (b) of the pressure contact area according to the embodiment of the present invention.

[Explanation of symbols]

 1 Conveying means 2 Thickness detecting means 3Pressure contact area adjustment means  FourConveyance force adjustment means  11 Thickness Detection Section 12 Judgment Section 13 Motor 14 Motor Control Section 15 Conveyor Belt 16 Motor Position Adjustment Section 17 Springs 18a, 18b Belt Support Roller19 Motor mount  20 Conveyor roller 100 Paper sheet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hirohito Matsushima 1-1-1 Shinurashima-cho, Kanagawa-ku, Yokohama, Kanagawa Pref. Japan Electric Robot Engineering Co., Ltd. (56) Reference: JP-A-4-327438 (JP, 327438) A)

Claims (1)

(57) [Claims] 1.An endless type conveyor belt with a motor
A pair of belts arranged at a position facing the motor
Rotate by circumscribing each rotation axis of the support roller,
The conveyance moving between the pair of belt support rollers
A belt is used to press the paper sheets against each other to give a conveying force to the paper sheets.
Transporting means for feeding and transporting, Based on the amount of light transmission of the paper sheets, the paper sheets
Thickness detecting means for detecting the thickness of The rotation of the motor is based on the detection result of the thickness detecting means.
By controlling the rolling torque,
Conveyance force adjusting means for adjusting the conveyance force for the paper sheets, Based on the detection result of the thickness detecting means,
One of the pair of belt support rollers and the installation position
By changing the arrangement position on one side,
Contact area of the conveyor belt against the paper sheets in
Pressure contact area adjusting means for changing  A paper sheet transporting device comprising: