JPH06104513B2 - Feeding mechanism with skew feed correction function for paper sheets - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sheet feeding mechanism with a skew feeding correction function, and more particularly to a sheet feeding mechanism with a skew feeding correction function using a peeling roller.

[Prior Art] Conventionally, this type of sheet feeding mechanism feeds a sheet with a pusher roller, and supports it through a picker roller that rotates in synchronization with the pusher roller and a one-way clutch in the feeding direction. The peeling roller was used to separate and feed the paper sheets one by one.

In this case, the peeling roller is held by a single shaft and driven by a single peeling roller drive motor.

[Problems to be Solved by the Invention] In the above-described conventional sheet feeding mechanism, the peeling roller is supported in the feeding direction via a one-way clutch or the like, and is held by a single shaft. Since the peeling roller drive motor is used, the skew feed correction mechanism that corrects the skew feed after the feed is not possible when the paper feed is skewed and fed out. In addition, there is a problem that the mechanism becomes complicated, the size becomes large, and the cost becomes high.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned conventional problems, and as a means for solving the problems, the feeding mechanism with a skew feed correcting function of the paper sheet according to the present invention is a paper sheet. In a feeding mechanism with a skew feed correction function for a paper sheet, which includes a pusher roller and a picker roller for feeding the paper, a peeling roller facing the picker roller, and a peeling roller drive motor for driving the peeling roller, the paper feeding is performed. A pair of left and right skew feeding detection sensors for detecting the skew feeding are provided, and the peeling roller is composed of a pair of left and right independently driven by individual peeling roller drive motors. When a skew of the same type is detected, the peeling roller drive motor on the leading side can rotate only the peeling roller on the leading side in the direction opposite to the feeding direction.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 6 are views showing an embodiment of the present invention.

FIG. 1 is a perspective view showing a sheet feeding mechanism with a skew feeding correcting function according to an embodiment of the present invention, and FIG. 2 is a side view thereof. 1 is a pusher roller, 2 is a picker roller, and 3a and 3b
Is a peeling roller, 4a and 4b are peeling roller drive motors, 5a and 5b are shafts, and 6a and 6b are skew detection sensors.

That is, in the feeding mechanism with the skew feed correcting function of the paper sheet of this embodiment, the pair of left and right peeling rollers 3a and 3b are respectively provided with the individual shafts 5.
When the pair of left and right skew feed detection sensors 6a and 6b, which are held at a and 5b and provided immediately after the feed, detect the paper sheet 7 being fed in the skewed state,
Separation roller drive motors 4a and 4b that drive 3a and 3b independently
Thus, the peeling roller 3a or 3b on the leading side of the skewed paper sheet 7 is rotated in the reverse direction to the feeding direction, and the skewed paper is fed while being corrected.

Next, the operation will be described with reference to FIGS. 3 and 4, 5 and 6.

A pusher roller 1 and a picker roller 2 rotate in the direction of arrow a by a motor (not shown), and the paper sheet 7 is delivered. Normally, the peeling rollers 3a and 3b do not rotate.

When the skew detection sensors 6a and 6b positioned immediately after being fed out detect that the paper sheet 7 is skewed and fed out (third
(Fig. 4, Fig. 4), the peeling roller drive motor 4b located on the side of the peeling roller 3b on the leading side is driven to rotate the peeling roller 3b in the direction of the arrow b opposite to the feeding, so that the leading side is directed to the paper sheet 7. The feeding resistance increases, and the feeding speed of the paper sheet 7 decreases.

Further, on the opposite peeling roller 3a side, since the shafts 5a and 5b are not independently rotated as shown in the figure, the feeding speed is kept normal, and therefore the skew feeding state is corrected and the feeding is performed (see FIG. (Fig. 6).

The peeling rollers 3a, 3a on the leading side of the paper sheet 7 skewed as described above
By reversing b to the feeding direction, feeding can be performed while correcting the skewed state.

[Advantages of the Invention] As described above, the feeding mechanism with the skew feeding correction function of the paper sheet of the present invention is provided with a pair of left and right skew feeding detection sensors for detecting the skew feeding when feeding the paper sheet, and peeling. The rollers are composed of a pair of left and right driven independently by separate peeling roller drive motors, and when the skew detection sensor detects skew of the paper sheet, the peeling roller drive motor on the leading side drives the leading side. Since only the peeling roller can be rotated in the opposite direction to the feeding direction, when it is detected that the paper sheet is being fed, the peeling roller on the leading side of the skew is rotated in the opposite direction to the feeding direction, and the peeling roller on the opposite side is rotated. Since the shaft is individual, it does not rotate, so skew correction can be performed at the same time as feeding, and the mechanism can be simplified and downsized compared to the case where a separate skew correction mechanism is provided as in the past. Na It is also possible to reduce costs.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sheet feeding mechanism with a skew feed correcting function according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a perspective view when skew feed is detected. 4 is a side view thereof, FIG. 5 is a perspective view showing a skew feed correction state, and FIG. 6 is a side view thereof. 1: Pusher roller 2: Picker roller 3a, 3b: Peeling roller 4a, 4b: Peeling roller drive motor 5a, 5b: Shaft 6a, 6b: Skew detection sensor 7: Paper sheet

Claims (1)

[Claims] 1. A pusher roller and a picker roller for feeding a paper sheet, a peeling roller which faces the picker roller and is in a rotation stop state when the paper sheet is normally fed out, and the peeling roller is driven. In a feeding mechanism with a sheet skew feeding correction function, which includes a peeling roller drive motor, a pair of left and right skew feeding detection sensors for detecting skew feeding when feeding a sheet is provided, and the above peeling rollers are provided as individual peeling rollers. It is composed of a pair of left and right driven independently by a drive motor, and when the skew detection sensor detects skew of a paper sheet, only the peeling roller located on the leading side of the skewed paper sheet is described above. A feeding mechanism with a skew feed correcting function for a sheet, wherein one peeling roller motor can rotate the sheet in a direction opposite to the feeding direction.