JP2004189399A - Face-back inversion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a face-back inversion device for shortening the time required for face-back inversion of paper sheets. <P>SOLUTION: In the face-back inversion device 10, paper sheets S are required to be low in friction resistance against an inversion unit 30 while maintaining high friction resistance against an inversion belt 31. A plurality of air blow-out parts 40 are formed on a surface of the inversion unit 30 along the diagonally slung inversion belt 31. By blowing air of the predetermined pressure from the air blow-out parts 40, the paper sheets S can be slightly floated from the surface of the inversion unit 30. Therefore, the paper sheets can be carried with small friction resistance against the inversion unit 30, the paper sheets S are smoothly face-back inverted along the slinging direction of the inversion belt 31. Further, heat generation of the inversion belt 31 and the paper sheets S can be efficiently suppressed during the high-speed inversion of the paper sheets S by utilizing the air blow. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front and back reversing device for reversing the front and back of paper sheets such as banknotes and securities.
[0002]
[Prior art]
Conventionally, a technique in such a field is disclosed in JP-A-9-81829. The front / back reversing device described in this publication has a rotatable switching blade extending in the direction in which bills are conveyed. When the bill to be reversed is conveyed, the switching blade is parallel to the conveying direction of the bill, and the bill is conveyed on the switching blade and discharged out of the conveying path. The bill discharged to the outside of the transport path in this way temporarily stops at a predetermined position. Then, after the switching blade is tilted by a predetermined angle and the bill is fed back toward the switching blade, the bill is returned to the transport path from the rear end side, and the front and back reversal of the bill is completed.
[0003]
[Patent Document 1]
JP-A-9-81829
[Problems to be solved by the invention]
However, the following problems exist in the above-described conventional front / reverse device. That is, since the banknote being transported is temporarily stopped at the time of reversal, the processing time required for reversing the front and back of the banknote must be lengthened, which has been an adverse effect of the high-speed reversal process.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a front / back reversing apparatus that shortens a processing time required for reversing a paper sheet.
[0006]
[Means for Solving the Problems]
A front and back reversing device according to the present invention is a front and back reversing device for reversing the front and back of a sheet conveyed on a conveyance path, wherein a reversing unit extending in a sheet conveyance direction and a part of the reversing unit are provided. Along with the reversing belt hung obliquely with respect to the longitudinal direction of the reversing portion, a driving means for driving the reversing belt, and a plurality of air blowing portions formed on the surface of the reversing portion along the reversing belt. It is characterized by having.
[0007]
In this front / back reversing device, when a sheet is carried in a state in which the reversing belt is driven by the driving means, the sheet is sandwiched between the reversing belt and the reversing unit, so that the reversing belt moves. Follows and moves in the transport direction. Then, in order to reverse the paper sheets, the reversing belt is hung obliquely along the longitudinal direction of the reversing portion. At this time, in order to surely reverse the paper sheet, the paper sheet is required to maintain a high frictional resistance to the reversing belt and to have a low frictional resistance to the reversing portion. Therefore, on the surface of the reversing section, a plurality of air blowing sections are formed along the reversing belt that is skewed. Therefore, by blowing air at a predetermined pressure from the air blowing unit, the paper sheets can be slightly floated from the surface of the reversing unit. Therefore, the paper sheet can be transported to the reversing section with low frictional resistance, so that the paper sheet is smoothly reversed upside down along the direction in which the reversing belt is passed. In addition, by using the blowing air, the heat generation of the reversing belt and the paper sheet can be efficiently suppressed during the high-speed reversal of the paper sheet. In addition, it is possible to surely turn the paper sheet upside down and to shorten the processing time required for turning the paper sheet upside down.
[0008]
Further, it is preferable that the air blowing portion is an air blowing hole. When such a configuration is employed, uniform air can be continuously applied to the sheet immediately below the reversing belt.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of a front / reverse device according to the present invention will be described in detail with reference to the drawings.
[0010]
The front / reverse device 10 shown in FIGS. 1 and 2 is a vertical front / reverse device in which an inlet (IN) is provided at an upper portion and an outlet (OUT1) is provided at a lower portion. The reversing device 10 has a housing 14 composed of two parallel side plates 11 and 12 and a bottom plate 13 bridged between the side plates 11 and 12 at the lower ends of the side plates 11 and 12. In the housing 14, there is provided a transport path H for transporting paper sheets (for example, banknotes and cards) so as to fall from top to bottom, and a reversing means P is provided in the middle of the transport path H. Is provided.
[0011]
The transport path H is mainly composed of a combination of a roller and an endless belt, and a plurality of guide rollers and an endless belt are arranged above the housing 14 to create a predetermined inflow path. Specifically, the inflow path includes a first endless transport belt 17 that extends between a pair of first guide rollers 16a and 16b and extends horizontally, and a first endless transport belt 17 at the front side of the endless transport belt 17. The guide roller 16 includes an introduction roller 18 pressed against the first guide roller 16a from above, and a second endless conveyance belt 19 pressed against the rear first guide roller 16b at the rear side of the endless conveyance belt 17 from above. ing. In addition, the second endless transport belt 19 is bridged between the second guide rollers 20 arranged at three points, and creates a predetermined tension on the second endless transport belt 19. Further, at the rearmost end of the inflow path, the third guide roller 21 is pressed against the second guide roller 20.
[0012]
The sheet S discharged from such an inflow path is guided into the reversing unit P while being sandwiched by the pair of feeding rollers 22. On the other hand, the paper sheet S discharged from the reversing means P is discharged toward the outlet (OUT1) by the pair of feeding rollers 23. Further, one of the feed rollers 23 and the third guide roller 24 disposed on the outlet side are connected via a third endless transport belt 26 extending horizontally. On the outlet side, a discharge roller 27 is pressed against the third guide roller 24 from below. The various rollers described above rotate synchronously with a timing belt T (see a dashed line) appropriately wound around the outside of the side plates 11 and 12, and each timing belt T is driven by one motor 28. .
[0013]
In addition, as shown in FIG. 1, a halfway discharge path is provided in the middle of the transport path H for the purpose of discharging a sheet S that is not scheduled to be reversed to the outside before being sent to the reversing means P. . The intermediate discharge path is formed by a discharge endless belt 25 pressed from below against the first endless transport belt 17, and the path is switched by a flow path switching blade disposed upstream of the discharge endless belt 25. 29. Therefore, when the swing type flow path switching blade 29 rotates in the direction of arrow A, the sheets S that are not to be inverted are discharged from the outlet (OUT2), and the flow path switching blade 29 rotates in the direction of arrow B. As a result, the sheet S to be reversed is advanced toward the reversing means P along the second endless transport belt 19.
[0014]
Further, a reversing means P is provided in the middle of the transport path H, and the reversing means P has a column-shaped elongated reversing part 30 extending in the vertical direction. Both ends of the reversing portion 30 are fixed to brackets (not shown) attached to the housing 14 via screws, and the reversing portion 30 is located between the feeding roller 22 and the feeding roller 23 in the center of the housing 14. Extend up and down.
[0015]
As shown in FIG. 3, a rubber reversing belt 31 that enables 180-degree reversal is wrapped around the column-shaped reversing portion 30 obliquely with respect to the longitudinal direction along the reversing portion 30. . The reversing belt 31 is housed in the housing 14 as an endless belt wrapped around a part of the reversing unit 30, and the reversing belt 31 is a motor (driving unit) M fixed to the side plate 12 via a bracket 32. The drive pulley 34 keeps driving in one direction.
[0016]
In order to enable continuous driving of the reversing belt 31, as shown in FIGS. 1 and 2, an inlet pulley 35 is disposed at a position facing the feeding roller 22, and an outlet pulley 36 is positioned at a position facing the feeding roller 23. Are arranged, and the inlet-side pulley 35 and the outlet-side pulley 36 are arranged with a 180 ° twisted phase relationship on the inlet side and the outlet side of the reversing unit 30. Further, a first intermediate pulley 37 is disposed on the front side with respect to the reversing portion 30 extending vertically, and a second intermediate pulley 38 is disposed on the rear side. The belt 31 is stretched over an outlet pulley 36 and a first intermediate pulley 37.
[0017]
On the other hand, on the entrance side of the reversing unit 30, the reversing belt 31 is stretched over the entrance side pulley 35 and the second intermediate pulley 38. Then, the reversing belt 31 is stretched over the first and second intermediate pulleys 37 and 38 via the driving pulley 34 (see FIG. 2). As a result, the reversing belt 31 continues to move so as to flow in one direction on the reversing unit 30. As a result, the paper sheet S that has entered from the entrance side of the reversing unit 30 is , And continues to move along the axis L of the reversing part 30, and finally turns 180 degrees at the exit side (see FIG. 3).
[0018]
In the reversing means P configured as described above, high-speed and reliable reversal of the sheet S is desired. To achieve this, the sheet S maintains a high frictional resistance with respect to the reversing belt 31. In addition, a low frictional resistance is required for the reversing section 30.
[0019]
Therefore, as shown in FIGS. 4 and 5, a plurality of air blowing holes 40 are formed on the surface of the reversing unit 30 along the surface of the reversing belt 31 that is slanted. Each of the air blowing holes 40 is formed to have a diameter of about 1 mm in order to maintain an appropriate blowing pressure, and is arranged in a longitudinal direction with about 5 to 6 pieces in a line in a belt hanging area R surrounded by a dashed line. Each air outlet 40 communicates with an air passage 41 extending in the longitudinal direction in the reversing portion 30, and the air passage 41 communicates with a joint 42 screwed to the reversing portion 30. An air pump 43 (see FIG. 1) is connected to the joint 42.
[0020]
Therefore, the sheet S can be slightly floated from the surface of the reversing unit 30 by blowing air having a predetermined pressure from the air blowing hole 40. Accordingly, when the sheet S is turned over by the cooperation of the reversing unit 30 and the reversing belt 31, the sheet S can be transported to the reversing unit 30 with low frictional resistance. S means that the front and back are smoothly turned over along the direction in which the reversing belt 31 is passed. In addition, by using the blowing air, the heat generation of the reversing belt 31 and the sheet S can be suppressed during the high-speed reversal of the sheet S. In addition, it is possible to properly achieve the reliable reversal of the sheet S, the reduction of the processing time required for the reversal of the sheet S, and the prevention of the skew of the sheet S.
[0021]
The present invention is not limited to the embodiments described above. In the above embodiment, the air blowing holes 40 are employed as an example of the air blowing portion. However, as another example of the air blowing portion, in the belt hanging region R, the longitudinal direction of the reversing portion 30 or the direction orthogonal to the longitudinal direction. A plurality of elongated slits may be provided in parallel.
[0022]
【The invention's effect】
Since the front / back reversing device according to the present invention is configured as described above, the following effects are obtained. That is, in a front / back reversing device for reversing the front and back of a sheet conveyed on the conveyance path, a reversing unit extending in the conveying direction of the sheet and a part of the reversing unit are arranged along the reversing unit. By providing a reversing belt obliquely hung with respect to the longitudinal direction of the section, a driving unit for driving the reversing belt, and a plurality of air blowing sections formed on the surface of the reversing section along the reversing belt, paper It is possible to reduce the processing time required for turning over a leaf.
[Brief description of the drawings]
FIG. 1 is a side view showing one embodiment of a front / reverse device according to the present invention.
FIG. 2 is a front view of the reversing device shown in FIG. 1;
FIG. 3 is a perspective view illustrating a relationship between a reversing unit and a reversing belt.
FIG. 4 is a front view of a reversing unit applied to the front / back reversing device shown in FIG. 1;
FIG. 5 is a cross-sectional view of a reversing unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... front and back reversing device, 30 ... reversing part, 31 ... reversing belt, 40 ... air blowing hole (air blowing part), H ... conveyance path, M ... motor (drive means), S ... paper sheets.

Claims (2)

In a front and back reversing device for reversing the front and back of a sheet conveyed on a conveyance path,
A reversing unit extending in the transport direction of the paper sheets,
A part is along the reversing part, a reversing belt hung obliquely to the longitudinal direction of the reversing part,
Driving means for driving the reversing belt,
A front and back reversing device, comprising: a plurality of air blowing portions formed on a surface of the reversing portion along the reversing belt. The front and back reversing device according to claim 1, wherein the air blowing unit is an air blowing hole.

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