JP2000128414A - Paper sheet collecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-performance device collecting any paper sheets regardless of their shapes and states by stopping near the rear end of the delivered paper sheets, retreating a brake means after that, and collecting them by a collecting means. SOLUTION: A drive roller 1 is driven by a motor based on a signal of a passing sensor 3 and controls the rotation, stop, and stop position. An impeller 4 is fitted coaxial with a driven roller 2 so as to be deviated axially and has flexible vanes. In forwarding the paper sheet, a guide member 5 guides a paper sheet pressed by the impeller 4. In delivering the paper sheet to a collecting space 6 by a delivery means, the impeller 4 stops at first and a brake impeller 4a stacked on the guide part in the axial view takes charge of the braking operation. To prevent the interference with the delivered paper sheet, an interval between a braking vane 4a and a following braking vane 4b is set larger than the other. This constitution can collect the paper sheets stably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stacking apparatus, and more particularly, to a sheet stacking apparatus for continuously stacking sequentially conveyed sheets.

[0002]

2. Description of the Related Art FIG. 9 shows a conventional paper sheet stacking apparatus. It goes without saying that the paper sheets handled here include not only ordinary paper on which printing is not performed, but also printed paper and bills.

In the stacking device described here, a space in which paper sheets are stacked is referred to as a stacking space 6. The stacking space 6 is a space having a width and height slightly larger than the largest sheet among the stacked sheets, and is surrounded by the lid 6b and the front plate 6c.

The impeller 4 has a size such that the rear end of the sheet intersects the impeller 4 when the tip of the smallest sheet among the sheets to be accumulated contacts the lid 6b. It has wings and rotates continuously.

The paper sheet 7a is provided with a transporting force by a transporting means comprising a driving roller 1 and a driven roller 2, and the stacking space 6 is provided.
Sent to. Paper sheet 7a sent to the stacking space 6
Collides with the lid 6b due to its inertia force and stops to be in the state of the paper sheet 7b.

Thereafter, the paper sheet 7b falls slowly in the stacking space, and during this time, the impeller 4 rotating continuously rotates the paper sheet 7b.
By hitting the rear end of the sheet b, the sheet 7b is pushed toward the front plate 6c to form the stacked sheet 7c. As a result, interference between the succeeding sheet entering the accumulation space 6 and the accumulated sheet 7c can be prevented, and normal accumulation is performed.

As described above, a method has been put into practical use in which the impeller 4 is continuously rotated to hit the rear end of the thrown sheet to secure a space for the subsequent sheet to enter and to continuously accumulate in the accumulation space. ing.

In this method, when the paper sheet has a size suitable for the size of the stacking space, the paper sheets can be normally stacked. However, when the sheet is so small that the impeller does not reach the rear end of the sheet when stopped by colliding with the lid 6b, the sheet thrown at the transport speed may not be able to contact the blade of the impeller. Subsequent paper sheets interfere with the leaves, and in the worst case, may cause banknote jam. As described above, in this method, the range of paper sheets that can be normally stacked is narrow.

As a countermeasure for stacking paper sheets of a wider range, as proposed in Japanese Patent Application Laid-Open No. 9-278254, a paper sheet is provided separately from an impeller rotating in an impeller section. Equipped with a speed-reducing means for reducing the carrying speed of papers, so that even if the leading edge of the conveyed paper sheet does not hit the case, the vicinity of the rear end of the paper sheet is knocked down with an impeller to secure a space for the subsequent paper sheet to be thrown. As a result, a paper sheet stacking apparatus that continuously stacks paper sheets has been proposed.

In the method proposed in Japanese Patent Application Laid-Open No. 9-278254, the speed reduction means is fixed, and when the rear end of the paper sheet is stopped by the speed reduction means, the paper sheet stays. Speed that is able to pass through. However, in the case where the size and material of the paper sheet to be handled are various, it is considered that a configuration corresponding to the paper sheet is necessary in order for the paper sheet to pass through the speed reduction unit and appropriately hit the rear end of the paper sheet.

[0011]

In the conventional sheet stacking apparatus according to the prior art, in which the impeller is continuously rotated and the rear end of the sheet is beaten and stacked, the size range of the sheet that can be normally stacked is narrow.
When applied to a stacking device for paper sheets having greatly different dimensions, it was not practically sufficient.

An object of the present invention is to provide a high-performance paper sheet stacking apparatus capable of stacking paper sheets regardless of the shape and state of the paper sheets.

[0013]

In order to achieve the above object, according to the present invention, there is provided a paper sheet stacking apparatus comprising a driving roller and a driven roller which is driven by pressure by the driving roller; A conveying path formed more upstream than the driven roller, a braking means provided coaxially with the driven roller and independently driven, an accumulating means attached to a shaft for driving the braking means, and at least the braking from the conveying path. A guide member formed to face the braking means to the downstream side of the means, and the guide member and the braking means are separated in the axial direction to overlap the two, and paper sheets passing through the portion are separated from each other. A braking part to be braked is formed, and the vicinity of the rear end of the paper sheets separated and conveyed one by one at the braking part is stopped, and then the braking means is retracted and the paper sheets are collected by the collecting means. I do.

The braking means and the accumulating means share the role of the elastic blade attached to one impeller, and overlap with the guide member when the impeller is stopped at a predetermined position. Elastic blades can be used as braking means. In this case, by rotating the shaft on which the impeller is mounted, the retraction of the braking means and the accumulation action of the accumulation means can be continuously performed.

In order to stack paper sheets in a well-aligned manner in this method, it is important that the stop position of the rear end of the paper sheet is within a predetermined range regardless of the shape and state. For this purpose, the shape of the guide member viewed from the axial direction is formed in a convex shape having a vertex in the middle between the pressing position of the conveying means and the braking portion of the guide member, and until the rear end of the sheet passes through the vertex. Give the paper sheet conveying power,
After passing through the vertex, a strong braking force is applied to the sheet.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a paper sheet stacking apparatus according to the present invention will be described below in detail with reference to FIG. FIG. 1 is a side view of the sheet stacking apparatus.

The conveying means comprises a driving roller 1 which is constantly rotated by a power source (not shown), and a driven roller 2 which rotates while being pressed against the driving roller.

The drive roller 1 is driven by a motor (not shown) for controlling rotation, stop, and stop position based on a signal from a passage sensor 3 that optically detects passage of a sheet. The impeller 4 is mounted coaxially with the driven roller 2 so as to be shifted in the axial direction, and has flexible blades. The guide member 5 is opposed to the impeller 4 with the paper sheet passage interposed therebetween, and guides the paper sheet pressed by the impeller 4 when the paper sheet advances. The stacking space 6 is a space for stacking paper sheets.

The guide member 5 has a braking portion 5a near a position facing the outer periphery of the impeller 4, and forms a convex portion 5b having an apex downstream of the braking portion 5a.

The impeller 4 is initially stopped when the sheet is conveyed to the stacking space 6 by the conveying means, and the braking blade 4a overlapping the guide portion when viewed from the axial direction performs the braking action. In FIG. 1, the impeller rotates counterclockwise.

In order to prevent interference with the conveyed paper sheet, the distance between the braking blade 4a and the subsequent stacking blade 4b is made larger than the others. Further, the stacking blades 4b are stopped by a blade stop member (not shown), which prevents the stacking blades 4b from entering the paper sheet conveying path.

FIG. 2 is an explanatory view of the relationship among the impeller, the paper sheet, and the guide member as viewed from above. The impeller 4 and the guide member 5 are shown in FIG.
As shown in FIG. The two overlap with each other, and when the sheet 7 comes in the meantime, the overlapping braking blade 4a is deformed and the sheet 7
Is generated against the guide member 5.

FIG. 3 is an explanatory view showing a state in which the paper sheet is being sent from the transport path to the accumulation space. When the paper sheet 7a is pushed between the impeller 4 and the guide member 5 by the conveying means including the driving roller 1 and the driven roller 2, the impeller 4 stops at a predetermined position as shown in FIG. The sheet 7a advances by pushing the braking blade 4a. At this time, the braking blade 4a
Generates a force for pressing the sheet 7a against the guide member 5, and the sheet 7a advances along the guide member 5. At this time, since the conveyance force generated by the conveyance means is larger than the conveyance resistance force of the braking blade 4a and the guide member 5a, the paper sheet 7a moves at substantially the peripheral speed of the drive roller. In this process, the passage sensor 3 determines the passage of the sheet.

When the trailing edge of the sheet passes through the holding portion of the driving roller and the driven roller, the feeding force at the holding portion disappears. FIG. 4 is an explanatory diagram of a state in which the paper sheet is in contact with the driven roller. As shown in FIG. 4, the rear end of the sheet 7b is in contact with the driven roller 2, and the braking blade 4a
The force for pressing b is the vertex 5 of the convex portion provided on the guide member 5.
b is added as a fulcrum. This force generates a force that pushes up the rear end of the sheet 7b from the driven roller 2.

The force for pushing up the sheet can be increased by forming the outer peripheral portion 2a of the driven roller with a material having a large coefficient of friction as shown in FIG. 5 or by providing a groove 2b on the outer peripheral surface. It is preferable that the groove 2b extends to the outer peripheral end 2c.

As the sheet 7 advances, it separates from the driven roller 2 and loses the force of pushing up the rear end of the sheet 7b. When the sheet 7b further advances, the rear end of the sheet 7b passes through the convex vertex 5b of the guide member 5 as shown in FIG.
The sheet 7b is pressed against the braking portion 5a of the guide member 5 by the force of a. Since a large conveyance resistance acts on the braking portion 5a, the rear end of the sheet 7b stably stops near the braking portion 5a. The paper sheet 7b can be stopped without the lid 6b of the stacking space 6.

When the impeller 4 is rotated counterclockwise after the paper sheet 7b stops, the braking blade 4a retreats, and the subsequent stacking blade 4b, which has been hindered by the blade stopping member, gets over the blade stopping member. Come. Then, the rear end of the paper sheet 7b is hit and moved, and the paper sheet 7c is stacked on the front plate 6c of the stacking space 6 as shown in FIG. When the impeller 4 rotates half a turn,
The pair of blades 4c and 4d are in a standby state as a braking blade and a stacking blade in preparation for stacking of subsequent sheets.

When a small sheet is conveyed while being largely displaced in the axial direction, one side end is separated from the impeller 4e beside the driven roller as shown in FIG. At this time, if there is no impeller between the driven rollers, the conveyance resistance applied to the paper sheet is insufficient, and the paper sheet cannot be stopped. Becomes unstable. In such a case, in order to stably accumulate, it is desirable that there are a plurality of sets of the driving roller and the driven roller in the axial direction, and that the set of the impeller and the guide member is symmetrically arranged at the center.
In addition, even when the sheet is conveyed slightly inclined, the sheet can be stacked without any trouble.

In the description of the present operation, the direction in which the sheet 7 enters the stacking space 6 is from the bottom to the top, and the sheet is stacked in a vertical position. This method can also be applied to stacking at different angles, such as stacking on top.

[0030]

According to the present invention, stable stacking can be performed irrespective of the difference in the size of paper sheets and the presence or absence of wrinkles.

[Brief description of the drawings]

FIG. 1 is a side view of a sheet stacking apparatus according to the present invention.

FIG. 2 is an explanatory diagram showing a relation between an impeller, a paper sheet, and a guide member as viewed from above.

FIG. 3 is an explanatory diagram illustrating a state in which a sheet is being sent from a conveyance path to an accumulation space.

FIG. 4 is an explanatory diagram illustrating a state in which a sheet is in contact with a driven roller.

FIG. 5 is an explanatory diagram of a driven roller.

FIG. 6 is an explanatory diagram of a state in which paper sheets are stopped by an impeller and a guide member.

FIG. 7 is an explanatory diagram of a state in which paper sheets are accumulated in an accumulation space.

FIG. 8 is an explanatory diagram of a state in which a small sheet is displaced in the axial direction.

FIG. 9 is a side view of a sheet stacking apparatus according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drive roller 2 ... Follower roller 3 ... Passage sensor 4 ... Impeller 5 ... Guide member 6 ... Stacking space 7 ... Paper leaf

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masuda Koden 502 Kandachi-cho, Tsuchiura-shi, Ibaraki Pref. Machinery Research Laboratory, Hitachi, Ltd. Hitachi, Ltd. Information Equipment Division (72) Inventor Shinji Shibata 1 Ikegami, Haruoka-cho, Owariasahi-shi, Aichi F-term in Hitachi Asahi Electronics Co., Ltd. 3F053 GB02 LA01 LB03 3F106 EA03

Claims (8)

[Claims] 1. A sheet stacking apparatus for stacking a plurality of sheets separated and conveyed one by one in a sheet stacking device, the conveying means comprising a driving roller and a driven roller pressed by the driving roller. A conveying path formed upstream of the means, a braking means provided coaxially with the driven roller and independently driven, an accumulating means attached to a shaft for driving the braking means, and at least the A sheet formed of a guide member formed so as to face the braking means to the downstream side of the braking means, separating the guide member and the braking means in the axial direction, overlapping the both, and passing the sheet. Forming a braking section for braking the paper sheet, stopping the vicinity of the rear end of the sheet conveyed at the braking section, then retracting the braking means, and accumulating the sheets by the accumulation means. Paper Kind integrated device. 2. The sheet stacking device according to claim 1, wherein
A sheet stacking apparatus, wherein a plurality of sets of the transport means are provided, and at least one set of the braking means is provided between the transport means. 3. The paper sheet stacking device according to claim 1, wherein
The paper sheet stacking apparatus according to claim 1, wherein the guide member is disposed on both outer sides of the conveying means in the axial direction, and the braking means is disposed on both outer sides of the guide member in the axial direction. 4. The sheet stacking device according to claim 1, wherein
The sheet stacking device according to claim 1, wherein the conveyance resistance of the guide member near the braking portion is larger than the conveyance resistance on the upstream side of the braking portion. 5. The sheet stacking device according to claim 1, wherein
The shape of the guide member as viewed from the axial direction is formed in a convex shape having an apex between the press-contact position of the conveying means and the braking portion, and the paper sheet contacts the driven roller and the convex portion The sheet stacking device, wherein the sheet is separated from the braking portion when the sheet stack is in contact with the sheet stack. 6. A sheet stacking apparatus according to claim 5, wherein
The sheet stacking device according to claim 1, wherein the sheet receives a greater conveying force from the driven roller than a conveyance resistance force when the sheet passes through the convex portion of the guide member. 7. The sheet stacking device according to claim 6, wherein
The paper sheet stacking apparatus according to claim 1, wherein a friction coefficient of an outer peripheral surface of the driven roller of the conveying means, or at least an outer peripheral surface contacting at least a side surface of the driven roller, is larger than a friction coefficient of the guide member. 8. The paper sheet stacking device according to claim 6, wherein
Providing a groove in the axial direction on the surface of the driven roller of the conveying means,
Alternatively, a sheet stacking device is provided with a groove-shaped notch on an outer peripheral surface of at least a side surface of the driven roller facing the guide member.