JPH082734A - Paper sheet conveyer - Google Patents

Abstract

PURPOSE:To reduce a cost of manufacture by preventing skew feed of paper sheets, decreasing a number of constitutional part items, and reducing a cost of the part and assembly man-hours, even in the case of changing thickness of the paper sheets conveyed. CONSTITUTION:Vertical motion of a driven roller 1 is guided by a groove of a guide 5 provided in the right/left of a paper guide 7, and a part in both ends of a roller shaft 2, holding the driven roller 1, is uniformly pressed by a spring 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet conveying apparatus capable of conveying paper sheets having different thicknesses, and more particularly to a paper guide for guiding paper sheets, a feed roller and a driven roller. The present invention relates to a conveyance mechanism section that nips and conveys paper sheets between the sheet and the sheet.

[0002]

2. Description of the Related Art FIGS. 3A and 3B are views showing a main part of an example of a conventional paper sheet conveying apparatus, FIG. 3A being a plan view and FIG. 3B being a front view.

As shown in FIG. 3, a conventional transport mechanism unit used in a paper sheet transporting device capable of transporting paper sheets having different thicknesses, and guiding the paper sheets, as shown in FIG. A paper guide 17 that guides the paper, a driven roller 11 that pushes up the paper sheets conveyed through the paper guide 17 upward, a feed roller 18 that is provided above the driven roller 11 so as to face the driven roller 11, and a driven roller. A roller shaft 12 that rotatably holds 11 and an arm 1 that holds both ends of the roller shaft 12 in the two arm portions at the tip end.
5, a spring shaft 14 that supports the rotational movement of the arm 15, and a spring shaft 14 that holds the spring shaft 14 at one end and attaches the other end to one arm portion of the arm 15.
And a torsion spring 13 for exerting a force for pushing the driven roller 11 upward via the arm 15.

In the conventional paper sheet transporting apparatus constructed as described above, when the thickness of the paper sheet transported while being guided by the paper guide 17 changes, the driven roller 11 moves up and down to move the driven roller 11. Pressure is applied to the paper sheets via the torsion spring 13 for applying this pressure.
Since the pressure is applied to only one arm of the arm 15, the pressure applied from the driven roller 11 to the paper sheets is not the same on the left and right sides of the driven roller 11. Moreover, the number of components as a whole is increasing.

[0005]

As described above, in the conventional paper sheet conveying apparatus, the pressure applied from the driven roller to the paper sheet is not the same on the left and right sides of the driven roller, so that the paper sheet to be conveyed is skewed. There is a problem of going. Further, since the number of constituent parts is large, there is a drawback that the cost of parts and the number of assembling steps are large and the manufacturing cost is high.

[0006]

A first paper sheet conveying apparatus of the present invention comprises a paper guide for guiding the paper sheet to be conveyed,
Guide guides provided on both sides of the paper guide and having a vertical groove, a roller shaft inserted into the groove of the guide guide to perform vertical movement, and a driven roller rotatably held by the roller shaft, One that connects two ends of the roller shaft to each other and has two arms at the outer ends, each of which has an operating arm that applies a force to uniformly push the roller shaft upward. And a spring shaft that holds the torsion spring.

A second paper sheet conveying apparatus of the present invention is a paper guide for guiding the conveyed paper sheets, guide guides provided on both sides of the paper guide and having vertical grooves, and the guide guides. A roller shaft that is inserted into the groove and moves up and down, a driven roller that is rotatably held by the roller shaft, and contacts both ends of the roller shaft, and pushes the roller shaft upward uniformly. It is provided with two independent torsion springs having a force-applying arm at the outer ends thereof, and a pulling shaft which holds the two torsion springs and fixes the inner ends of the two torsion springs. ing.

[0008]

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

FIG. 1 is a diagram showing a main part of an embodiment of the present invention, (a) is a plan view, (b) is a front view, and FIG. 2 is two different operating states of the embodiment of FIG. FIG.

In FIG. 1, a paper guide 7 guides the conveyance of paper sheets. The guide guides 5 are provided on both sides of the paper guide 7, and have vertically formed grooves. Both ends of the roller shaft 2 are inserted into the groove of the guide guide 5, and can move up and down in the groove of the guide guide 5. The driven roller 1 is rotatably held by a roller shaft 2. The driven roller 1 is provided at both ends of the roller shaft 2 at the outer ends of the two spring portions of the torsion spring 3 so that the tip of the working arm 3a is fixed. Contact,
The driven roller 1 is pushed upward via the roller shaft 2. The forces for pushing up the roller shaft 2 of the two working arms 3a are equal. Torsion spring 3
The inner ends of the two spring parts are connected to form a single component, and the working arm 3a extends from the outer ends of the two spring parts. The torsion spring 3 is held by a spring shaft 4, and the spring shaft 4 is attached to a paper guide 7.

It should be noted that the torsion spring can obtain the same effect and effect even if the two spring parts are formed as independent parts and the inner ends of the two parts are fixed to the spring shaft.

The paper sheet transporting device constructed as described above is
It works as follows.

That is, when the paper sheet (medium) 6 is conveyed between the feed roller 8 and the driven roller 1 as shown in FIG. 2 (a), as shown in FIG. 2 (b). Since the driven roller 1 is pushed down, the roller shaft 2 descends in the groove of the guide guide 5 of the paper guide 7, and the distance between the feed roller 8 and the driven roller 1 becomes a distance corresponding to the thickness of the medium 6. To do. At this time, since the two action arms 3a of the torsion spring 3 are bent by the same amount, the forces exerted by the torsion spring 3 on the driven roller 1 are equal to each other. Therefore, skewing of the medium 6 is prevented.

[0014]

As described above, the paper sheet conveying apparatus of the present invention guides the vertical movement of the driven roller by the grooves of the guide guides provided on the left and right of the paper guide, and holds the driven roller 1. Evenly pressing the both ends of the sheet with springs has the effect of preventing skew of the sheet even if the thickness of the sheet to be conveyed changes. Further, since the number of constituent parts can be reduced, there is also an effect that the cost of parts and the number of assembling steps can be reduced to reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a diagram showing a main part of an embodiment of the present invention, FIG.
Is a plan view and (b) is a front view.

2 is a front view showing two different operation states of the embodiment of FIG. 1. FIG.

3A and 3B are diagrams showing a main part of an example of a conventional paper sheet transporting device, FIG. 3A being a plan view and FIG. 3B being a front view.

[Explanation of symbols]

 1/11 Driven roller 2/12 Roller shaft 3/13 Torsion spring 3a Working arm 4/14 Spring shaft 5 Guide guide 6 Paper sheets (medium) 7/17 Paper guide 8/18 Feed roller 15 Arm

Claims (2)

[Claims] 1. A paper guide for guiding a paper sheet to be conveyed, guide guides provided on both sides of the paper guide and having vertical grooves, and rollers which are inserted into the grooves of the guide guides and move up and down. A shaft, a driven roller rotatably held by the roller shaft, and outer end portions each having a working arm that comes into contact with both end portions of the roller shaft and applies a force that uniformly pushes the roller shaft upward. 2. A paper sheet transporting device, comprising: one torsion spring, which is formed by connecting two spring portions of the above, at an inner end portion thereof; and a spring shaft which holds the torsion spring. 2. A paper guide for guiding a sheet to be conveyed, guide guides provided on both sides of the paper guide and having vertical grooves, and rollers which are inserted into the grooves of the guide guides and move up and down. A shaft, a driven roller rotatably held by the roller shaft, and an action arm for contacting both end portions of the roller shaft and uniformly pushing the roller shaft upwards are provided at outer end portions. With two independent torsion springs,
And a pulling shaft that holds the two torsion springs and fixes inner ends of the two torsion springs.