JPH0512191Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention is a paper sheet stack feed detection device used in paper sheet processing machines such as counting and discharging banknotes and various cards. , especially between the gates that detect stacked feed〓
Relating to an adjustment device.

(Prior Art) A paper stack feed detection device used in a conventional paper sheet processing machine generally includes a paper sheet transport body consisting of a roller or the like, and a paper sheet stack facing the transport body. A freely rotatable detection roller is provided to form a predetermined gap between the gates, which is more than the thickness of one sheet and less than the thickness of two sheets, and detects when one sheet passes between the gates. The roller does not rotate, but when two or more sheets pass between the gates at the same time, the detection roller is rotated by the sheets, and this rotation is detected by an appropriate detection means such as a sensor or a micro switch. By detecting this, it is possible to detect stacked feeding.

(Problem to be solved by the invention) However, in the above-mentioned conventional detection device, the distance between the gates consisting of the conveyor and the detection roller is set to suit the thickness of the paper sheets to be processed. A detection roller was attached to the conveying body so that 〓 remained unchanged during this time. Therefore, when processing other types of paper sheets with different thicknesses, it is not possible to change the distance between the gates, and the processing becomes impossible.

To deal with this, the shaft of either the conveyor or the detection roller is fitted into a long hole formed in a fixed wall, and this shaft is displaced along the long hole and then fixed, thereby increasing the distance between the gates. Although it is possible to make the adjustment possible, this configuration would make it extremely difficult to adjust the distance between the gates and require highly skilled techniques, especially when dealing with very thin paper sheets such as banknotes. There is a problem that adjustment work becomes even more difficult.

In view of this, the present invention is designed to easily change the distance between the gates between the conveyor and the detection roller, and to simplify the adjustment work. This was made for the purpose of providing an adjustment device.

(Means for solving the problem) In order to achieve the above purpose, between the gates of the present invention
The adjustment device has a gate between a first detection roller that has a shaft portion and is provided with a sheet conveyor, and a second detection roller that is provided opposite to the first detection roller and has a shaft portion. When a plurality of paper sheets are inserted between the gates at the same time, the second detection roller is rotated by the paper sheets, and this rotation is detected to detect the weight of the paper sheets. In a stacked paper sheet stack feed detection device that detects stacked paper feed, in order to make it possible to change the distance between the gates formed by the first and second detection rollers, the shaft portion of the second detection roller is connected to the paper sheet stack. support means for supporting the first roller on both side plates of the leaf pile feeding detection device so as to be separable from the shaft portion of the first roller; an adjusting member having an arcuate surface whose radial dimension changes with respect to the shaft of the first detection roller and being rotatable with respect to the shaft of the second detection roller; and fixing the adjustment member. a fixing means, provided on the shaft portion of the first detection roller so as to be rotatable together with the second detection roller, and provided at a position facing the adjustment member on the shaft portion of the first detection roller; and an adjustment roller on the both side plates for biasing the adjustment roller on the shaft of the second detection roller toward the adjustment member on the shaft of the first detection roller,
spring biasing means for biasing the support means toward the shaft portion of the first detection roller, the adjustment roller being displaced by rotation of the adjustment member to adjust the gate interval; The adjusting member is characterized in that the adjusting member also serves as a stop member for restraining the rotation of the second roller when normal banknotes pass.

(Function) When the adjustment member is rotated, the detection roller placed and abutted on the eccentric arcuate surface of the adjustment member is moved up and down, and the distance between the gates is expanded or contracted. At this time, adjustments are made by inserting paper sheets to be actually processed, such as banknotes and cards, between the gates, or by inserting a thickness gauge. After the distance between the gates is adjusted to be more than the thickness of one sheet of paper to be processed and less than the thickness of two sheets, if the fixing means is fixed again and the adjusting member is restrained, the distance between the gates can be adjusted. value is kept.

(Embodiments) The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows a side view of an embodiment of the gate-to-gate adjustment device according to the present invention, and FIG. 2 shows a longitudinal sectional front view of the same.

In the same figure, the shaft portions 2, 2 at both ends of the first detection roller 1 provided with a conveyance body are mounted on machine frames 3, 3, which serve as both side plates of the stacked paper sheet feed detection device, and bearings 4, which serve as supporting means. , 4,
A pulley 5 is fixed to one shaft 2, and a belt 7 transmits rotation from a motor 6 to the pulley 5.
is wound.

Adjusting members 8, 8 are rotatably mounted on the shaft portions 2, 2 via bearing members 9, 9.

The adjustment members 8, 8 have circular arc surfaces 8A eccentric to the axes of the shaft portions 2, 2, and the third
Eccentric rollers as shown in the figure or Figures 4 and 5
As shown in the figure, a circular arc surface 8A with a part of the circumferential surface eccentric
It is made up of a member having an arcuate surface whose radial dimension increases as shown in FIG. These fixing members 10, 10 are attached to the machine frames 3, 3 by means of screws 11, 11.
It is said that it can be fixed freely. Note that details of the adjustment members 8, 8 will be described later.

A plurality of grooves 1 are formed at predetermined intervals in the circumferential direction of the roller constituting the first detection roller 1.
2, 12, . It is now used to transport.

On the other hand, a second detection roller 15 is provided directly above the first detection roller 1 . This second detection roller 15 has shaft portions 16, 16 at both ends thereof.
are rotatably supported by bearings 17, 17 as supporting means provided on the machine frames 3, 3 so as to be movable up and down in the figure.
Spring 19,1 in spring chamber 18,18 formed in
9, the pressure rods 20, 20 to be pressurized are brought into contact with each other, and constitute a spring biasing means. The springs 19, 19 always urge the first detection roller 1 side.

On the circumferential surface of the second detection roller 15, a portion corresponding to the circumferential surface other than the concave grooves 12, 12, . is formed in the small diameter portion 15B, and the circumferential surface of the large diameter portion 15A and the circumferential surface of the carrier 1 form a gap G between the gates.
Then, the circumferential surface of both ends of the second detection roller 15, that is, the circumferential surface of the rotating body that rotates integrally with the second detection roller 15 (shaft portions 16, 16 or the second detection roller 1
5 or a roller similar to the second detection roller 15 corresponds to the adjustment roller, and in this embodiment, the second detection roller 15 is also used as the adjustment roller) is the axis of the adjustment roller. The springs 19, 19 rest on the arcuate surfaces 8A, 8A of the adjustment members 8, 8 whose radial dimension increases with respect to the springs 19, 19.
are pressed together by the urging force of.

A disk-shaped detection plate 21 is fixed to the end of one shaft portion 16 of the second detection roller 15. As shown in FIG.
This detection plate 21 has a plurality of detection holes 22, 22, . The rotation amount of the detection plate 21 is detected by this sensor 23.

The amount of eccentricity of the arcuate surface 8A of the adjustment member 8 is the third
As shown in the figure, when ε is set at the axis, the displacement amount of the second detection roller 15 is 2ε, and the distance between the gates 〓G
is adjusted within the range of 0 to 2ε.

The adjusting member 8 shown in FIG.
90°, and the required margin angles α and β (approximately 15°)
The rest is a circular arc surface 8B based on a perfect circle.
It is said that In this case, a gear 23 is formed on the perfect circular arc surface 8B, and a gear 25 that is rotated by rotating the adjustment knob 24 is meshed with the gear 23.
By rotating the adjustment knob 24, the adjustment member 8
can be rotated and displaced. Further, the adjusting member 8 shown in FIG. 5 has an eccentric circular arc surface 8A.
This is the case where the area is set to 180° plus margin angles α and β, and thereby a displacement amount of 2ε is obtained for the eccentricity amount ε. In this way, the arcuate surface 8A of the adjusting member 8 can be set in any range other than by using the eccentric roller, and can be appropriately selected as necessary.

When adjusting G between the gates, loosen the screws 11, 11 of the fixing members 10, 10 to release the contact between the adjusting members 8, 8, and rotate the adjusting members 8, 8. 8 eccentric circular arc surface 8A
The second detection roller 15 placed above and in contact with is moved up and down, and the gap between the gates G is expanded or contracted. At this time, either insert the paper sheets P to be actually processed, such as banknotes or cards, between the gates G and make adjustments.
Alternatively, insert a thickness gauge to make adjustments. Between the gates〓After G is adjusted to be more than the thickness of one sheet of paper to be processed and less than the thickness of two sheets, fixing member 1
0 and 10 are fixed again and the adjustment members 8 and 8 are restrained, the gap between the gates 〓G is maintained at the adjusted value. In addition, an adjustment scale is attached to the adjustment member 8,
If the amount of rotation of the adjustment members 8, 8 is determined in accordance with this scale, the adjustment work can be further facilitated.

After setting G between the gates in this way, only one sheet of paper can be placed between the gates as in the conventional method.
When passing through G, the second detection roller 15 does not rotate, and two or more detection rollers overlap between the gates 〓G.
When the sheet enters the second detection roller 15, the second detection roller 15 is rotated by the sheet, and the rotation sensor 23 detects the stacked feeding.

In the illustrated embodiment, the adjustment members 8, 8 are brought into direct contact with the circumferential surface of the second detection roller 15;
Of course, the adjustment member may be brought into contact with a rotating body (arc-shaped member) that is provided coaxially with the detection roller and rotates substantially integrally with the detection roller.

[Effect of idea]

As described above, according to the present invention, the axis of the movable detection roller is disposed to be displaceable from the axis of the fixed detection roller, and the axis of the movable detection roller is pressed toward the axis of the fixed detection roller by the biasing means. However, since the detection roller shaft of the fixed detection roller is provided with an adjusting member having an arcuate surface whose radial dimension changes,
The structure of the device can be simplified, and since the setting of the gate interval and the rotation prevention of the movable detection roller shaft are done by a common adjustment member, setting the distance between the gates etc. is very easy and accurate. can be done. Moreover, the biasing means may be integrated;
Various excellent effects such as no need to perform these adjustments can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the gate-to-gate adjustment device according to the present invention, FIG. 2 is a longitudinal sectional front view of the same, FIG. This figure and FIG. 5 are front views showing modified examples of the adjusting member. 1...First detection roller, 2...Shaft portion, 3...
Machine frame, 6...Motor, 8...Adjustment member, 8A...
Arc surface, 10... Fixed member, 15... Second detection roller, 19... Spring, 21... Detection board, 23...
...Sensor, G...Between gates, P...Paper sheets.

Claims (1)

[Claims for Utility Model Registration] A first detection roller that has a shaft portion and is provided with a sheet conveyor; a second detection roller that is provided opposite to the first detection roller and has a shaft portion; When a plurality of paper sheets are inserted between the gates at the same time, the second detection roller is rotated by the paper sheets, and this rotation is detected and the paper is detected. In a paper sheet stack feed detection device that detects stack feed of leaves, the second
supporting means for supporting the shaft portion of the detection roller on both side plates of the paper stack feed detection device so as to be able to be separated from the shaft portion of the first roller; An adjuster is provided near the both side plates, has an arcuate surface whose radial dimension changes with respect to the shaft of the first detection roller, and is rotatably provided with respect to the shaft of the second detection roller. a member, a fixing means for fixing the adjustment member, provided on the shaft portion of the first detection roller so as to be rotatable together with the second detection roller;
an adjustment roller provided on the shaft of the first detection roller at a position facing the adjustment member; and an adjustment roller on the shaft of the second detection roller provided on the shaft of the first detection roller. spring biasing means provided on the both side plates to bias the support means toward the shaft portion of the first detection roller; The gate interval is adjusted by displacing the adjustment roller by the rotation of the banknote, and the adjustment member also serves as a stop member for restraining the rotation of the second roller when a normal banknote passes. This is a gate-to-gate adjustment device in a stacked paper sheet feed detection device.