JPH03187814A - Detecting device for defective sheet bundle half-wrapping - Google Patents

Abstract

PURPOSE:To enable extremely accurate detection of a half-wrapping binding state even when a substance is worn by a long use or has wrinkles or a part left folded by a method wherein orientation of a back support to clamp a sheet bundle during half-wrapping when a clamp plate is displaced in a clamp releasing direction is detected. CONSTITUTION:Through the working of a half-wrapping binding mechanism, the tip of a half-wrapping tape 12 is caused to edge through a sheet bundle 10, and thereafter the half-wrapping tape 12 is wound around the sheet bundle 10. In this case, the half-wrapping tape 12 is wound around the sheet bundle 10 in a manner to draw in a sheet 16 located to a clamp plate 13a and a back support 13b. When the half-wrapping tape 12 is bound by a given amount, the half-wrapping tape 12 is cut. The cut part is overlapped with an already wound portion and securely adhered by means of a heat seal means and other like.

Description

[Detailed description of the invention]

[Industrial Application Field 1] The present invention is attached to a paper bundle bundling device for bundling a predetermined number of paper sheets such as banknotes, and detects whether or not the bundling is performed accurately. The present invention relates to a paper bundle binding defect detection device for use in paper bundle binding.

[Prior Art] A paper bundle binding device is used to count paper sheets such as banknotes and bundle them into bundles every predetermined number of sheets. Conventionally, this banding and binding device has the configuration shown in FIG. 4. In the figure, l indicates a bundle of paper sheets, and the bundle of paper sheets l is carried into a banding and binding device by a chuck means 2, and is bound with banding tape 3 by a banding mechanism (not shown). In order to perform this banding and bundling, the sheet bundle 1 is clamped from both sides by sheet clamping means 4. This sheet clamping means 4 consists of a movable clamp plate 4a and a fixed back support 4b, and the sheet bundle 1 is inserted between them by the chuck means 2 with the clamp plate 4a spaced apart from the back support 4b. , the clamp plate 4a is displaced to the back support 4b side to clamp the paper bundle 1. Then, in order to bind the bundle of paper sheets 1 strongly and to prevent the paper sheets from being pulled out after the binding, the bundle of paper sheets 1 is curved when the paper sheet clamping means 4 is used for flange. ing. For this purpose, the clamp brake (4a) has a convex curved shape, and the back support (4b) has a concave portion formed in the center corresponding to this. By the way, when bundling one bundle of paper sheets 1 with the banding tape 2, bundling defects may occur, for example, if the banding tape 2 breaks midway or the contact M portion of the tape end peels off. If such a bundling failure occurs, the operation must be interrupted and the sheet must be immediately ejected from the apparatus. Therefore, it is necessary to detect whether or not the banding and bundling is performed correctly every time the banding operation is performed, and to confirm that the banding and bundling is performed correctly. For this reason, the banding and binding device is equipped with a banding defect detection mechanism. Conventionally, this bundling defect detection mechanism is composed of a transmission type optical sensor 5 consisting of a light emitting element 5a and a light receiving element 5b.
Moreover, when the clamp plate 4a is separated from the back support 4b in order to release the clamp of the paper bundle 1 by the paper clamp means 4, the clamp plate 4a
At the same time, the banding tape 2 is placed above and below the position where the wrapped paper bundle 1 moves out of the optical path. Therefore, when the clamp plate 4a is displaced after completing the banding and binding work for one sheet bundle 1, if the sheet bundle [1] has been banded and bound correctly, the light emitting element 5a will be activated as shown in FIG. The light from is received by the light receiving element 5b. On the other hand, if there is a defect in band binding, as shown in FIG. 6, even if the clamp plate 4a is displaced, at least some of the paper sheets will remain at the band binding position without moving, so that one light emitting element The light from 5a is not received by the light receiving element 5b. Therefore, by activating the optical sensor 5 when the clamp is released by the clamp play (clamp play)-4a, it is possible to detect whether or not banding and bundling are performed accurately. [Problem to be Solved by the Invention 1] As described above, the bundling defect detection mechanism according to the prior art detects whether or not bundling is performed accurately by directly detecting the bundle of paper sheets. Because there are
If the paper sheets to be bound are all in a constant condition, there will be no particular problem. However, if there are old, wrinkled or bent items such as banknotes, even if they are properly bound, when the clamping state of the bundle of paper sheets 1 by the clamp plate 4a is released, In addition, the entire bundle of paper sheets I does not always move to a position out of the optical path of the optical sensor 5. That is, when used paper sheets are bundled together, they swell up and become extremely thick compared to new paper sheets, so that the bundle of paper sheets may not completely move out of the optical path of the optical sensor 5, or If there is a sheet of paper that is bent or wrinkled, the bent portion may protrude into the optical path of the optical sensor 5, resulting in an erroneous detection of poor bundling. The present invention has been made in view of the above points, and an object thereof is to improve the accuracy of detecting the banding state of a bundle of paper sheets. [Means for Solving the Problems 1] In order to achieve the above-mentioned object, the present invention provides a clamp plate on which a banding tape is wrapped together with the paper sheets, and a clamp plate on which a banding tape is wrapped together with the paper sheets, and a clamp plate on which a banding tape is wrapped together with the paper sheets. It has a paper clamping means consisting of a back support that clamps a stack of paper sheets between it and a plate, and the back support of the paper clamping means can be rotated in a direction in which its tip approaches or moves away from the stack of paper sheets. At the same time, the paper sheet clamping member is urged in a direction away from the sheet bundle by a biasing means, and a thin plate that is wrapped with a banding tape during banding and bundling is connected to the back support, and the sheet sheet clamping member is moved in the direction of unclamping. The present invention is characterized in that the posture of the back support when it is displaced is detected by a posture detecting means. [Effect 1] With the configuration described above, if the banding is done correctly, the thin plate provided on the back support is wrapped around the banding tape, so the clamp plate is displaced in the direction of unclamping. At this time, the back support also follows this and is displaced in the same direction. On the other hand, if the bundling is not performed accurately, when the clamp plate is displaced in the direction of releasing the clamp, the back support is rotated in a direction away from the bundle of sheets due to the action of the biasing means. Therefore, by detecting the rotational displacement of the back support with the attitude detection means, it is possible to detect a defective band binding. Since it does not directly detect the paper sheets, it is possible to detect the state of the paper sheets in any condition, such as those that are worn out, wrinkled, or bent. This allows for extremely accurate detection. [Embodiment 1] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. First, FIG. 1 shows a schematic configuration of a paper sheet bundle banding and binding device according to the present invention, and FIG. 2 shows an external appearance of a back support. In the figure, reference numeral 10 indicates a bundle of paper sheets, and the bundle of paper sheets 10 is carried into the banding and bundling position from the direction shown by the arrow in the figure while being held by a guide support 11 having a clamping mechanism. It has become. At this banding and bundling position, a banding and bundling mechanism (not shown) is provided, and the bundle of paper sheets 10 is banded and tied with the banding tape 12 by this banding and bundling mechanism. When the paper bundle 10 is bound, the clamping of the paper bundle 10 by the guide support 11 described above is released, and the paper bundle 10 is clamped by the paper clamp means 13. This paper sheet clamping means 13 is composed of a clamp plate 13a and a back support 13b, and the clamp plate 13a is provided with a convex arc-shaped clamp surface, and the center portion of the back support 13b is provided with a corresponding clamp surface. There is no particular difference from the prior art described above in that the recessed portion is formed as shown in FIG. It is no different from the conventional technology. However, the back support 13b is rotatable about the rotation shaft 14 in a horizontal direction, that is, in a direction in which its leading end approaches or moves away from the bundle of paper sheets 10. The tip of the back support 13b is normally displaced in a direction away from the bundle of paper sheets 10 by a spring 15 serving as a biasing means. On the other hand, when the paper bundle 10 is placed in the banding and binding position and the clamp plate 13a is displaced in a direction approaching the back support 13b, the back support 13b is displaced parallel to the clamp plate 13a. The back support 13b also has a thin plate 1 at its tip.
6 extends along the contact surface with the paper bundle 10, and a detection plate 17 projects perpendicularly to the thin plate 16 on the side opposite to the contact surface with the paper bundle 10. It is set up. The banding tape 12 is wound around the thin plate 16 together with the bundle of paper sheets 10 when the banding tape 12 is used to bind the thin plate 16 . On the other hand, the detection plate 17 is provided to enable detection of rotational displacement of the back support +3b, and for this purpose, an optical sensor 18 consisting of a light emitting element 18a and a light receiving element 18b is provided. This sensor 18 is
When the back support 13b is parallel to the clamp plate 13a, the optical path from the light emitting element 18a to the light receiving element 18b is not obstructed. The detection plate 17 attached to the back support +3b is provided at a position where it obstructs the optical path when the back support +3b is rotated by a certain amount. This embodiment is configured as described above, and the bundle of paper sheets 10 is held between the guide supports 11 with the clamp plate 13a spaced apart from the back support I3b.
is sent to the banding and bundling position, and the clamping state of the paper bundle IG by the guide support II is released. In this state, the sheet bundle 10 is clamped by the sheet clamping means 13. Therefore, the banding tape 1 is first activated by the banding binding mechanism.
2 into the bundle of paper sheets 10, and then the banding tape 12 is wrapped around the bundle of paper sheets 10. At this time, the banding tape 12 is wound around the paper bundle 10 so as to wrap around the thin plate 16 provided on the clamp plate 13a and the back support 13b. Then, when the banding tape 12 is wrapped by a predetermined amount, the banding tape 12 is cut, and the cut end is superimposed on the already wrapped portion and bonded and fixed by means such as heat sealing. After banding and bundling is performed as described above, the clamp plate 13a is slightly displaced in the direction away from the back support 13b to release the clamp, and the guide support 11 clamps and clamps the paper bundle IO. do. After that, if the guide support 11 is displaced in the direction opposite to the arrow in FIG.
leaves the band binding position. At this time, the paper bundle 10
At the same time, the clamp plate 13a and the thin plate 16 of the back support 13b, around which the banding tape 12 is wound, are pulled out from the banding tape 12. By the way, if the banding tape 2 breaks or the adhesive part of the end part peels off, etc., and the banding is defective, the thin plate 16 provided on the back support 13b
becomes a free state. Therefore, when the clamp plate 13a is displaced in the clamp release direction, the back support 13a
b is rotationally displaced about the rotation axis 14 in a direction away from the thin plate 16 and the paper bundle 10 by the action of the spring 15, and as a result, the detection plate 17 changes the optical path from the light emitting element 18a to the light receiving element 18b. It will go inside. Therefore, after the banding is completed, the clamp plate 13
When a is displaced in the clamp release direction, the optical sensor 18 is activated and the light emitting element 18a to the light receiving element 18b is moved.
If the light is emitted toward the light receiving element 18b, as shown in FIG.
If the light is received by the third
As shown in the figure, since light is blocked by the detection plate 17 and the light receiving element 18b no longer receives light, it is possible to detect the banded state. As described above, the bundling state is not detected by directly detecting the bundle of paper sheets IO, but the posture of the back support 13b that clamps the bundle of paper sheets IO is determined by the posture of the back support composed of the detection plate 17 and the optical sensor 18. By detecting with the detection means, the presence or absence of defective banding and bundling is detected. Here, this back support 13b does not change its position even if the thickness of the bundle of paper sheets 10 changes depending on whether the paper sheets to be banded and bundled are new or used ones, and moreover, the position of the back support 13b does not change due to bending or wrinkles. Even if there is such a problem, the paper sheet will not protrude into the optical path of the optical sensor 18 because it is restricted by the back support 13b. Become so. [Advantageous Effects of the Invention 1] As explained above, the present invention detects the posture of the back support that clamps the bundle of paper sheets during bundling when the clamp plate is displaced in the direction of unclamping, so that the bundling can be done accurately. Since we are trying to detect whether or not this has been done, the paper sheets to be bundled are new. Even if the item is worn out, has an Il, has a tendency to bend, etc., the banding and bundling state of the item can be detected extremely accurately, and erroneous detection can be prevented.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a schematic configuration diagram of a banding defect detection device shown together with a banding and binding device, FIG. 2 is an external view of a back support, and FIG. 3 4 is an explanatory diagram of the operation of the bundling defect detection device when there is a bundling defect; FIGS. 4 to 6 show the prior art;
The figure is a schematic diagram of the banding and bundling device, and FIG. 5 is an explanatory diagram of the operation of the banding defect detection device in the case where banding and bundling are performed accurately, and FIG. 6 in the case where banding is defective. 11: paper bundle, 12: banding tape, 13: paper clamp means, 13a: clamp plate, 13b = back support, 14: rotation axis, 15: spring, 16: thin plate, 17: detection plate, 18: optical sensor , 18a: Light emitting element. 18b: Light receiving element.

Claims (1)

[Claims] In order to bundle a predetermined number of paper bundles with banding tape,
The sheet clamping means includes a clamp plate around which a banding tape is wrapped together with the sheet, and a back support that clamps the bundle of sheets between the clamp plate. is rotatable in the direction of approaching and separating from the bundle of paper sheets,
A biasing means is used to bias the sheet bundle in a direction away from the sheet bundle, and the back support is provided with a thin plate that is wrapped with banding tape during banding and bundling, and when the sheet clamping member is displaced in the direction of unclamping. A paper bundle binding defect detection device characterized in that the posture of the back support is detected by a posture detection means.