JPH03158345A - Drawing-out gap correcting mechanism of paper - Google Patents

Abstract

PURPOSE:To maintain an extremely adequate gap by composing the system to take in the data of slowdowns owing to an oblique passing and an overlapping passing detecting by a transmitted light sensor in a conveyance, and to correct the gap between a gate roller and a picker roller as desired when the accumulating value in a specific conveying time exceeds a specific amount. CONSTITUTION:The slowdown times of media when a standard number of sheets are drawn out are accumulated, and when the accumulation data exceeds a standard value, a mechanical completion 8 outputs an instruction to the left and the right motors 9. And a gear with screw 11 is rotated a standard amount by an encoder, a gate roller 6 is moved by a standard amount through an arm 12 to expand the gap, and a slowdown phenomenon is corrected. And from the output of a transmitted light sensor 13, the mechanical completion 8 judges that sheets are conveyed overlapping two or more sheets, and when the abnormal sheet number in a conveyance of a standard sheet number exceeds a standard value, the gap between a picker roller 5 and the gate roller 6 is reduced by a standard value by the order of the mechanical completion 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bill feeding mechanism in a paper sheet conveying device, and particularly to a paper sheet feeding gap correction mechanism.

[Prior Art] Conventionally, in this type of feeding mechanism, the proper gap was adjusted by inserting a thickness gauge between the picker roller and the gate roller and measuring the weight when drawing out with a spring scale. [Problem to be solved by the invention] In the gap correction in the conventional feeding mechanism described above,
Since the gap is adjusted using a thickness gauge and the tensile force of the spring, there are individual differences in reading and measurement methods, making it difficult to fix the gap in the correct position.

Furthermore, the gap changes with the passage of time and changes in the environment, so it is necessary to adjust the gap each time.

Furthermore, since the left and right gate rollers are integrated, the left and right gate rollers cannot be independently controlled for their positions, which is a drawback.

The present invention has been made in view of the above-mentioned problems, and is capable of always adjusting an appropriate gap amount, and automatically adjusting an appropriate gap even in response to changes in the gap due to the passage of time or changes in the environment. It is an object of the present invention to provide a paper sheet feeding gap correction mechanism that can independently adjust the gap amount between a gate roller and a picker roller.

[Means for Solving the Problems] The present invention provides the above-mentioned method for correctly feeding paper sheets one by one from between two pairs of gate rollers and picker rollers provided in two rows in the width direction at an exit for stacked paper sheets. A paper sheet feeding gap correction mechanism that adjusts the gap between the gate roller and the picker roller, and the gate roller is
A gate roller drive mechanism is provided for each gate roller to separate the paper sheets from each other and adjust the gap. Two sets of transmitted light sensors are provided in the width direction of the conveyance path to detect changes in the amount of transmitted light, and when the amount of transmitted light detected by the transmitted light sensor is compared with a specified amount of transmitted light, the gate is activated when the amount of transmitted light is decreased. A signal is sent to the roller drive mechanism to drive the gate roller in a direction closer to the picker roller, and the transmitted light sensor calculates the passage time of the paper sheet, and if the passage time is slower than the specified passage time, the gate roller drive mechanism A signal is sent to drive the gate roller in a direction away from the picker roller, and if there is a difference in the passage time of paper sheets detected and calculated by two sets of transmitted light sensors, one gate roller drive mechanism is activated. and a control device that transmits signals for different driving directions of the gate roller.

[Example] Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a side view of an embodiment of the present invention, and FIG. 2 is a top view thereof. A sheet of paper 1 is pressed in the X direction by a pressure roller 4 while being pressed by a backup plate 3 on a guide 2. is pushed out. The gap between the picker roller 5 and the gate roller 6 is positioned wide enough to allow only one sheet of paper 1 to pass through, thereby conveying the sheets of paper one by one.

The gate rollers 6 are provided in two rows in the width direction along with the bushing roller 4 at the outlet for paper sheets 1, and are independently moved toward and away from the picker roller 5 by a gate roller drive mechanism. That is, the gate roller 6 is attached to one end of the L-shaped arm 12 with the corner portion being pivotally supported, and
A threaded gear 11 is connected to the other end of the L-shaped arm 12. The threaded gear 11 has its threaded part connected to an L-shaped arm 12.
The L-shaped arm 12 is screwed into the threaded portion of the L-shaped arm 12 and is driven by the motor 9 to swing the L-shaped arm 12 relative to the threaded portion. This swing causes the gate roller 6 to move toward and away from the picker roller 5, and the gap amount is adjusted.

On the other hand, two transmitted light sensors 7 are installed in the conveyance path 15 for paper sheets 1.
．． 13 are provided. The transmitted light sensor 7.13 consists of a pair of light emitting parts and light receiving parts provided above and below the conveyance path 15, and detects changes in the amount of transmitted light caused by passing paper sheets.

8 in the figure is a mechanical controller which is a control device, and a transmitted light sensor 7
．． 13, it sends a start signal for either vertical movement of the gate roller 6 to the gate roller drive mechanism. That is, the mechanical controller 8 determines the ideal transport speed of the paper sheet 1 by detecting the rotational speed of the picker roller 5 using the encoder 14, sets it as a reference value, and stores this value. This value and the transmitted light sensor 7 immediately after feeding out
Determine whether there is a sluggish phenomenon during feeding based on the passing time. The sluggish time of each medium is accumulated when the standard number of sheets are printed out, and when the cumulative data exceeds the standard value, the mechanical controller 8 issues a command to the two left and right motors 9, and the encoder 10 controls the threaded gear 11 by the standard amount. The gate roller 6 is rotated and moved by a reference amount via the arm 12 to widen the gap and correct the sluggish phenomenon.

In addition, the mechanical controller 8 is set so that the output when passing through the rear transmitted light sensor 13 varies depending on whether a single sheet of paper is being conveyed or when two or more sheets are being conveyed in a form. .

At this time, the mechanical controller 8 judges from the output of the transmitted light sensor 13 that two or more sheets have been conveyed in a single pattern, and similarly to the above, when the abnormal number of sheets during the reference number of sheets conveyance exceeds a certain standard value, the mechanical controller 8 With this command, the gap between the picker roller 5 and the gate roller 6 is narrowed by a reference value.

Furthermore, whether the paper sheet l is being conveyed obliquely is determined from the difference in passing time between the left and right sides of the rear transmitted light sensor 13, and data is stored for each side. Similarly to the above, if the reference value is exceeded when a certain number of sheets are conveyed, the gate roller 6 on the side that passed through the rear transmitted light sensor 13 first during conveyance is moved to widen the gap and narrow the other gap. .

[Effects of the Invention] As explained above, the present invention captures each element of skew feeding, double feeding, and sluggishness of paper sheets obtained by a transmitted light sensor during conveyance as data, so that the accumulated value during constant conveyance is constant. Whenever the amount is exceeded, the gap between the gate protrusion roller and the picker roller is corrected.

This eliminates the need for conventional manual adjustments that are less efficient and less accurate, and allows a very appropriate gap to be maintained.

In addition, when changing paper sheets or equipment, adjustments can be made simply by transporting them, eliminating the need for traditional evaluations and reducing labor costs.
Experiment costs can be significantly reduced.

Furthermore, it can be used against any changes in the environment and has the advantage of not requiring maintenance over time.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the paper leaf green gap correction mechanism of the present invention, and FIG. 2 is a top view of FIG. 1. 2 Paper sheets 2 Guide 3: Backup plate 4: Butt roller 5: Picker roller 6: Gate roller 7, 13: Transmitted light sensor 8: Mechacon 9
:Motor 10.14:Encoder 11:Threaded gear 12:L-shaped arm 15:@Feed path

Claims (1)

[Claims] In order to correctly feed paper sheets one by one from between the two pairs of gate rollers and picker rollers provided in two rows in the width direction at the exit for stacked paper sheets, the gap between the gate roller and the picker roller is A paper sheet feed gap correction mechanism for adjusting the paper sheet feed-out gap correction mechanism, which moves the gate roller toward and away from the picker roller, and provides a gate roller drive mechanism for each gate roller to adjust the gap, and adjusts the paper sheet conveyance path. Two sets of transmitted light sensors are provided in the width direction of the conveyance path, which consist of a pair of light emitting parts and light receiving parts provided above and below, and detect changes in the amount of transmission due to passing paper sheets. The amount of transmitted light is compared with a specified amount of transmitted light, and if the amount of transmitted light has decreased, a signal is sent to the gate roller drive mechanism to drive the gate roller in a direction closer to the picker roller, and the transmitted light sensor detects the paper sheet. If the passing time of the type is slower than the specified passing time, a signal is sent to the gate roller drive mechanism to drive the gate roller away from the pick roller. A paper sheet feeding gap characterized by comprising a control device that transmits a signal indicating a different drive direction of the gate rollers to both gate roller drive mechanisms when there is a difference in the calculated passage times of the paper sheets. Correction mechanism.