JPS62196251A - Skew compensator in conveyor for paper sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a paper sheet conveying device in a cash dispenser such as an automatic banknote processing device, a bill depository, etc. The present invention relates to a skew correction mechanism that corrects during transportation.

(Prior art) For example, in a cash dispenser, if bills are conveyed in a skewed state, one bill may be read incorrectly or cannot be read, making automatic processing impossible. A skew correction mechanism is required, which aligns the images so that they are perpendicular to the transport direction. Conventionally, as this type of skew correction mechanism, the third
2. Description of the Related Art As shown in FIGS. 2 and 4, a mechanism of a stopper plate installed perpendicularly to the conveying direction and capable of opening and closing is known. Crown rollers 21a, 21b and 21c, 2
1dvc- Endless conveyor bell wrapped around each l-2
The sheet 31t- is sandwiched between sheets 4& and 24b and conveyed in the direction of the arrow in FIG. 3 by rotation of the belt. An upper guide 26 and a lower guide 25 are arranged along the yc@ feed path to prevent folded paper sheets from jamming. A fourth roller is installed in the middle of this conveyance path and at a location where the front and rear ends of the sheet 31 are separated from the positions of the entry and exit crown rollers.
A solo pan roller 22 and a tension roller 23 are arranged as clearly shown in the figure, and at this point, the paper sheet 31 is conveyed in a state close to point contact with the solo pan roller 22,
Moreover, it is rotatable within the transport plane around this point. A stopper plate, that is, a skew correction plate 29 is located ahead of the solo pan roller 22 and the tension roller 23.
It is pivotally supported by 9aIC. The skew correction plate 29 is rotatable in the conveyance direction about a pivot shaft 29a'Jr as a rotation center, but is normally held at a position perpendicular to the conveyance direction (at the solid line in FIG. 3) by a spring 30.

Here, the skewed paper sheet 31 is transferred to the solo pan roller 2.
2 and tension row 523'1CLF), the skew is corrected by colliding the tip with the vertical skew correction plate 29, and then the skew correction plate 29 is pushed away by the sheet 31, resulting in the state shown by the broken line in FIG. 3. The paper sheet 31 is opened and moved as shown in FIG. In addition, in FIG. 3, 27 is a movable tension bracket that pivotally supports the tension roller 23, and 27a is a tension bracket 270.
The pivot that is the center of rotation, 28 is the tension roller 23'F
-A spring for applying pressure.

(Problems to be Solved by the Invention) The conventional skew correction mechanism described above aligns the leading edges of paper sheets by instantaneously colliding them with the stopper plate, so it is difficult to correct paper sheets with many folds and wrinkles. Skew correction is not easy for paper sheets that are weak or soft, and there are disadvantages in that the impact of the collision can damage the paper sheets.

(Means for Solving the Problems) The paper sheet skew correction mechanism according to the present invention includes a sensor that ejects the skew of the paper sheets being conveyed, and a sensor that is disposed within the conveyance system and is driven to rotate in forward and reverse directions by a motor. and a control section that controls the rotation of the motor so as to make the skew amount zero based on the output signal of the sensor.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a control system of a skew correction mechanism according to an embodiment of the present invention, and FIG. 2 is a partially cutaway schematic side view of the embodiment of the present invention. The present invention is composed of a sensor 32, a control section 33, and a skew correction mechanism section 34 as shown in FIG.
2Vc, the amount of skew of the paper sheet being conveyed is measured, and based on the skew data, it is determined how many times the turntable (described later) of the skew correction mechanism section 34 should be rotated in either the clockwise or counterclockwise direction. is determined by the control unit 33, and the skew correction mechanism unit 34 is controlled to perform skew correction.

The skew correction mechanism of this embodiment will be explained in more detail with reference to FIG. Conveyor belts 2a, 2b.

A turntable 3 is disposed between the sheet conveyance path of the crown rollers la, lb and the sheet conveyance path of the conveyance healds 2c, 2d, claraf 0-ra lc, ld, and this turntable 3VC feed roller 4 and A tension roller 5 is supported. The paper sheet 15 is fed 1c between the feed roller 4 and the tension roller 5 from the entrance side of the figure, that is, the conveyance path of the conveyor belts 2a and 2b, and is skew-corrected here as described later, and then transferred to the B side, that is, the conveyor belts 2c and 2b.
It is sent to the conveyance path 2d. Sensors 16a and 16b are arranged on the inlet conveyance path consisting of conveyor belts 2a and 2b.

The turntable 3 trap has a shaft 6 fixed to the sheet 15 on the conveyance path, and a synchronized pulley 7 at the lower end of this shaft.
is fixed. Shaft SVi bearing box 13 and bearing 14
A synchro belt 11 is hooked between the synchro pulley 8 which is supported by the motor 12 and fixed to the output shaft of the motor 12, and the synchro pulley 7 of the turntable 3. The shaft 6
, that is, around an axis perpendicular to the surface of the paper sheet 150. In addition, since the feed roller 4 and the tension roller 5 are supported by the turntable 3Vc as described above, the rotation of the turntable 3 causes the rollers 4 and 5 to be brought into pressure contact with each other. The sheet 15 also rotates together with the turntable about the vertical axis. A position detection plate 9 is further fixed to the output shaft of the motor 12, and the rotation angle of the motor output shaft and thus the turntable 30 is detected by the position detection sensor IO. This position detection sensor 10 is mainly used to detect the initial value of the turntable 3. In addition, a control section for controlling the rotation direction and rotation speed (rotation amount) of the motor 12 is provided.

In such a configuration, when a paper sheet such as a banknote is conveyed in a skewed state from the entrance side on the west side, the sensor 16a first
, 16b detects the skew amount of the sheet, and sends this detection signal to the control section.

Next, when the sheet of paper is collected on the feed roller 4 and tension roller 5 on the turntable 3 as shown by reference numeral 15, the rotation direction of the motor 12 and the rotation from the initial position are changed by the output control signal from the control section. The amount is determined and rotated. The direction and amount of rotation are determined to be such that the amount of skew of the paper sheet 15 on the turntable 3 is eliminated, and as the turntable 3 rotates, the paper sheet 15 also rotates together with the table, resulting in the skew. is removed and conveyed to the B side by the feeding action of the feeding roller 4.

(Effects of the Invention) As explained above, the present invention does not remove the skew by applying the skewed paper sheet directly to the vertical plate.

Since the turntable holding the paper sheet is rotated in accordance with the skew iK so as to cancel it, there is an effect that the skew can be reliably corrected without damaging the paper sheet as compared to the conventional method.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a control system according to an embodiment of the present invention, FIG. 2 is a partially cut side view of a skew correction mechanism according to an embodiment of the present invention, and FIG. 3 is a paper sheet with a conventional skew correction mechanism. A side view of the leaf conveying device, Figure 4 is taken from IV-IV in Figure 3.
FIG. 5 is a schematic cross-sectional view taken along the line -v in FIG. 3. 1a, 1b, 1c, ld...
Kura+770-ra. 2 a , 2 b , 2 c , 2 d ,,
Transport heald. 3...Turntable% 4...Feed roller. 5... Tension roller s 6... Shaft, 7.8
... Synchronous pulley, 9... Position detection plate. 10... Position detection sensor, 11... Synchro pulley, 12... Motor, 1
6a, 16b...Sensor, 15...Paper leaf.

Claims (2)

[Claims] (1) A sensor that is installed on the sheet conveyance path and detects the amount of skew of the sheet being conveyed, and a turn that can be rotated forward and backward around an axis perpendicular to the paper surface of the sheet. A skew correction device for a paper sheet conveying device, comprising: a table; and a control section that controls a drive motor of the turntable based on a detection signal from the sensor. (2) The turntable pivotally supports a sheet conveyance roller, and as the turntable rotates, the conveyance roller also rotates forward and backward around an axis perpendicular to the paper surface of the sheet. A skew correction device in a sheet conveying device as set forth in claim 1.