JPH069075A - Separating mechanism for paper sheet - Google Patents

Abstract

PURPOSE:To always maintain the pressing force against paper sheets constant, and reduce a skew quantity so that separation and feed of the paper sheets can be stably performed. CONSTITUTION:A feed roller 2 of which the axis can not be displaced and a feed roller 3 of which the axis can be swinged are arranged in two rows along the feeding direction of paper sheets, and the feed roller 3 is energized in the direction of pressing the paper sheets 15. A pressing plate 8 arranged opposite to the feed rollers 2, 3 is provided capably of being advanced or retreated through a driving means 12, and when displacement of the feed roller 3 to a non-feed position of paper sheets by the swing is detected by means of a position detecting sensor 5, the driving means 12 is driven so as to move the pressing plate 8 on the feed roller 2, 3 side, and the uppermost paper sheet is controlled so as to be always positioned on a separation position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet peeling mechanism, and more particularly to an improvement of a structure for appropriately maintaining a pressing force or a contact force of a feed roller against a paper sheet.

[0002]

2. Description of the Related Art In a conventional paper sheet peeling mechanism, two or a plurality of feed rollers that come into contact with paper sheets are arranged in a line in the axial direction, and a mechanism for swinging the feed rollers is also the same axis. It is known what is placed. Further, the pressing force of the feed roller or the like for peeling the paper sheets is simply given by the drive control of the spring or the motor.

[0003]

However, since the conventional feed rollers are arranged in a line laterally in the axial direction,
When the pressing force between the feed roller and the paper vein is reduced, the feeding force of the paper sheets becomes unbalanced, and the paper sheets are easily skewed. Further, even if the pressed paper leaves the feed roller evenly, the peeling operation is performed as it is, so that there is a disadvantage that the paper is skewed similarly to the above. Furthermore, it is unclear whether the lower part of the pressed paper sheet has reached the appropriate peeling position, and if the peeling operation is performed without reaching the peeling position, feed error, bending of the paper sheet, or tearing will occur. There was also the inconvenience of occurring.

In addition, the pressing force of the paper sheets is given only by the feed of the spring or the motor, and is not controlled until the pressing force is kept constant. Therefore, in the peeling operation of the paper sheets, it has been a cause of inconvenience such as intermittent feeding of the paper sheets.

[0005]

It is an object of the present invention to improve such disadvantages of the conventional example, particularly to reduce the skew amount of paper sheets as much as possible, and to press the paper sheets with a constant pressing force to stabilize the paper sheets. It is an object of the present invention to provide a paper sheet peeling mechanism that can be expected to deliver leaves.

[0006]

According to the present invention, in a paper sheet peeling mechanism having a feed roller arranged to face a pressing plate for pressing paper sheets, the feed roller is provided such that its axial center cannot be displaced. And a feed roller having a shaft center that is swingable and normally urged to press the paper sheets. These feed rollers are arranged in two rows along the paper sheet feeding direction. It takes the structure that it is done. This is intended to achieve the above-mentioned object.

[0007]

In the paper sheet peeling mechanism of the present invention, the feed roller whose shaft center cannot be displaced and the feed roller whose shaft center can swing are arranged in two rows along the paper feeding direction. Since the rotating force of the paper sheet is suppressed by the presence of the paper sheet, the paper sheet can be fed out while reducing the skew amount.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing an arrangement example of the respective constituent members in the present embodiment, and FIG. 2 is a side view during a paper sheet peeling operation. In these figures, the feed roller 3 is supported by an arm 4 and is provided so as to swing about the axis of the picker roller 1.
The feed roller 3 and the arm 4 are respectively arranged at two positions in the axial direction, and the position detection sensor 5 corresponding to each is provided. This position detection sensor 5
Is the outer peripheral surface of the feed roller 3 which is in contact with the paper sheet 15,
The sheet feeding position, which is a substantially upper position between the feed table 13 and the guide 14, and the sheet non-feeding position on the left side of the position are detected. Further, the feed roller 2 is supported above the feed roller 3, and the feed roller 2 is provided such that its axial center cannot be displaced.

The pressing plate 8 for pressing the paper sheet 15 is a spring 9
Is connected to the block 10 via. This block 10 is connected to a lead screw 11 which is rotated by a motor 12 as a driving means via an appropriate rotation stopping mechanism, whereby the pressing plate 8 is arranged along the axial direction of the lead screw 11 via the block 10. It is provided so that it can move forward and backward. The peeling of the paper sheet 15 arranged between the pressing plate 8 and the feed rollers 2 and 3 is performed with the contact portion between the picker roller 1 and the one-way roller 7 as the peeling position.

Next, the operation of this embodiment will be described.

The paper sheet 15 is pressed against the pressing plate 8 and pressed against the feed rollers 2 and 3. At this time, the feed roller 3 is pushed by the paper sheet 15 and swings rightward as shown by an arrow b in FIG.
After the paper sheet supply position (the position shown in FIG. 2 in the embodiment) is detected by the feed rollers 2 and 3, the picker roller 1 is rotated, and the paper sheet 15 is supplied and separated one by one. Become.

At this time, the pressing force on the paper sheet 15 is given by the springs 6 and 9 mounted on the arm 4 and the pressing plate 8. Then, as the paper sheet 15 is reduced by the peeling operation, the axial center position of the feed roller 3 is displaced to the left side in the drawing, and when the position detection sensor 5 is disengaged and the paper sheet non-feeding position is reached, the motor 12 is driven, The pressing plate 8 is moved until the position detection sensor 5 detects the sheet feeding position of the feed roller 3.

By this control, the pressing force can be kept constant during the peeling operation, and the position detection sensor 5 can be used.
By the detection of, the position of the lower part a of the paper sheet can be always confirmed,
The paper sheet 15 is surely inserted into the peeling position and can be conveyed in a predetermined manner.

[0015]

Since the present invention is constructed and operates as described above, according to the present invention, the feed roller having the unchanged center axis and the feed roller having the center axis swinging are fed. Since they are arranged in two rows along the direction, there is an effect that the rotating force of the paper sheets can be suppressed, and the skew amount can be reduced as much as possible.

Further, since the pressing plate is moved by the motor and the feed roller can also be swung in correspondence with this, the pressure roller can be swung between the paper sheet and the feed roller.
It is possible to always apply a constant pressing force regardless of the number of stored paper sheets, and it can be expected that the feeding force required for stable peeling can be obtained. Further, the motor is driven according to the detection of the sensor, so that the paper sheet can always reach the peeling position, and therefore, the risk of the paper sheet feeding error can be effectively avoided. Thus, it is possible to provide a paper sheet peeling mechanism having an excellent effect that has not been achieved conventionally.

[Brief description of drawings]

FIG. 1 is a side view for explaining an arrangement of respective constituent members showing an embodiment of a paper sheet peeling mechanism according to the present invention.

FIG. 2 is a side view for explaining the operation in the above embodiment.

[Explanation of symbols]

 2 feed roller 3 feed roller 5 position detection sensor 6, 9 spring 8 pressing plate 12 motor as drive means 15 paper sheet

Claims (3)

[Claims] 1. In a paper sheet peeling mechanism having a feed roller arranged to face a pressing plate for pressing paper sheets, the feed roller has a feed roller whose shaft center is not displaceable, and a shaft center. A feed roller that is swingably provided and is always urged to press the paper sheets, and the feed rollers are arranged in two rows along the feeding direction of the paper sheets. Paper peeling mechanism. 2. The swinging feed rollers are provided at two positions on the same axis, and the feed rollers are individually provided so as to be independently swingable. The paper sheet peeling mechanism according to item 1. 3. A sensor for detecting a paper sheet non-feeding position of the feed roller is provided in the vicinity of the swinging feed roller, and when the sensor detects the paper sheet non-feeding position. The paper sheet peeling mechanism according to claim 1, further comprising drive means for moving the pressing plate toward the feed roller.