JPS6134193B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a form floating prevention mechanism suitable for application to optical character reading devices, optical mark reading devices, and the like.

Typically, these devices include a form hopper that stores forms to be processed, a form reader that reads information on the forms, and a form reader that reads information on the forms.
Equipped with a feed roller that feeds out the forms one by one on the form hopper, a form alignment mechanism that aligns the forms fed by the feed roller until they reach the form reading unit, and a form stacker that accumulates processed forms. It is composed of

This type of device configured in this manner is usually configured to be able to handle various document sizes and document thicknesses in order to provide versatility.

However, the following problems arise depending on the type of form.

That is, as shown in the form alignment mechanism in FIG. 1, a form 1 is sequentially transferred by a feeding roller from a hopper located on the right side, moves on a guide surface 2, and is first subjected to a force F directed to the left by a drive roller 4. receive. Due to this force F, the form 1 first receives a rotational moment indicated by an arrow M in the figure around the center of gravity G of the form 1, and is pressed against the reference guide 3, and then the form 1 starts moving to the left.

At this time, if the ream weight of the form is small, the stiffness of the form is small, and a phenomenon occurs in which the corner of the form is bent upwards because it cannot be supported at point A in the figure. The state in which the corners of the form are raised upward is shown by broken lines in FIG.

If this phenomenon occurs, it goes without saying that correct reading cannot be performed at the subsequent reading section. The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to prevent the trailing edge of a form from riding on the reference guide surface, thereby preventing the form from skewing during feeding, thereby making it stable. The object of the present invention is to realize a form dispensing mechanism capable of dispensing documents.

The object of the present invention is to provide a form hopper, a form feeding roller, a guide surface for transporting the form, a reference guide surface that rises perpendicularly from the guide surface and comes into contact with the side surface of the form, and a form that feeds out the form from the form hopper. a form alignment mechanism having a drive roller for transporting the form along the guide surface and applying a rotational moment to the form so that its side surface comes into contact with the reference guide surface side, and performing predetermined processing on the aligned form. In the form handling device comprising a form processing section, a protrusion along the form surface is formed on the reference guide surface constituting the form alignment mechanism, at least in an area where the form is pressed by the rotational moment of the drive roller. This can be achieved by using a form floating prevention mechanism that is characterized by the following.

The present invention will be explained below using the drawings.

FIG. 3 shows an embodiment of a form floating prevention mechanism to which the present invention is applied.

In the figure, 1 is a form, 2 is a guide surface, 3 is a reference guide surface, 3' is a slit formed on the reference guide surface 3 along the form conveyance direction, 4 is a drive roller, 5 is a
6 is a feed roller, and 6 is a sheet floating prevention roller. As can be seen from the figure, this embodiment is provided with a floating prevention roller 6 that projects from the reference guide surface 3 in the direction along the guide surface 2. Therefore, as mentioned above, the center of gravity G of the form is
The rotational moment M acting around the reference guide surface 3
This can effectively prevent the trailing edge of the form from floating up. Further, according to this embodiment, a structure is adopted in which the position of the anti-float roller 6 can be moved along the guide surface 2 depending on the size of the form to be handled.

By configuring it in such a way that it is deceptive, it is possible to prevent the form from floating even when handling a form that is weak. Furthermore, since the anti-float roller 6 can be installed at any position, it is possible to handle forms of any size.

FIG. 4 shows another embodiment according to the invention.

In the figure, 7 is a form conveyance unit, 8 is a feed roller, and 9
10 indicates a form stacker, and 10 indicates a stopper. Note that the form processing section is omitted in the figure.

This embodiment focuses on the fact that the operator initially sets the position of the stopper 10 of the form stacker 9 to the optimum position when the size of the form to be handled is determined, and the operation is linked to the movement of the stopper 10 as shown in FIG. The position of the form floating prevention roller 6 is set to the optimum position that matches the form size.

If this embodiment is adopted, the setting of the form floating prevention roller 6 is completed at the same time as setting the stopper position, so the work for setting the roller 6 can be omitted, and mistakes in setting the roller 6 can be prevented. I can do it.

FIG. 5 shows an embodiment of an interlocking mechanism applied to the embodiment of FIG. 4.

In the figure, 11 is supported by rollers, and one location is roller 6.
12 is a second belt which is also guided by rollers and connected to a part of the stopper 10 at one point; 13 is the first belt 11 connected to the shaft of the stopper 10;
A first gear 14 is installed coaxially with one roller that guides the second belt 12, and a first gear 14 is installed coaxially with the axis of a roller that is opposite the first gear 13 that guides the second belt 12. This is the second gear.

That is, when the stopper 10 of the stacker is moved, for example, in the direction of arrow B in the figure, the roller 6 moves between the first and second belts 11, 12 and the first and second gears 1.
3 and 14 in the same direction as the stopper 10. At this time, by changing the gear ratio, it is possible to change the movement ratio of the stopper 10 and the floating prevention roller 6, and it is possible to always set the floating prevention roller 6 near the center of gravity of the form 1 (gear ratio 1/2). Alternatively, as the form size increases, the anti-floating roller 6 can be set further back from the center of gravity of the form (gear ratio < 1/2).

FIG. 6 shows still another embodiment of the form floating prevention mechanism to which the present invention is applied. In the figure, 1 is a form, 3 is a reference guide surface, 4 is a drive roller, 15 is a separate belt, 16 is a protruding guide plate, and 17 is a form hopper. In this embodiment, a form alignment mechanism is provided above the form hopper 7. Therefore, the guide surface 2 shown in FIGS. 3 to 5 is replaced by the topmost form surface of the group of forms deposited on the hopper 7. Further, in this embodiment, the protruding guide plate 16 forming the protruding portion does not move as in the previous embodiment, but is placed on the reference guide surface 3.
Fixed. The position of the protruding guide plate 16 is set in consideration of its relative position with the drive roller 4 so that a constant gap G is always maintained with respect to the topmost form surface of the hopper 7. By providing the protruding guide plate 16 very close to the drive roller as in the illustrated embodiment, it works effectively even for small forms.

As explained above, according to the present invention, the following effects can be obtained with a simple configuration.

1. Hold the rear edge of the form from running onto the reference guide,
It prevents skew of the form during feeding and allows stable feeding.

2. By moving the form floating prevention part according to the form size, stable feeding of forms of any size can be performed.

3. More stable feeding can be achieved by linking with the positioning display or stopper.

[Brief explanation of the drawing]

1 and 2 are a top view and a perspective view of a conventional form alignment mechanism, FIG. 3 is an embodiment of a form floating prevention mechanism according to the present invention, and FIG. 4 is a form floating prevention mechanism according to the present invention. Other embodiments of the prevention mechanism, No. 5
The figure shows an example of the drive mechanism of the embodiment shown in FIG.
FIG. 6 shows still another embodiment of the form floating prevention mechanism according to the present invention. In the figure, 1 is a form, 2 is a guide surface, 3 is a reference guide surface, 4 is a drive roller, 5 is a feed roller, and 6 is a form floating prevention roller.

Claims (1)

[Scope of Claims] 1. A form hopper, a form feeding roller, a guide surface for transporting the form, a reference guide surface that rises perpendicularly from the guide surface and comes into contact with the side surface of the form, and a form that feeds the form from the form hopper. a form alignment mechanism having a driving roller for transporting the form along the guide surface and applying a rotational moment to the form so that the side surface of the form contacts the reference guide surface; and a form alignment mechanism that performs predetermined processing on the aligned form. In the form handling device, the reference guide surface constituting the form alignment mechanism is provided with a protrusion along the form surface, at least in an area where the form is pressed by the rotational moment of the drive roller. A bill floating prevention mechanism that is characterized by the following: 2. The form floating prevention mechanism according to claim 1, wherein the protrusion is movable in the form transport direction depending on the size of the form to be handled. 3. The form floating prevention mechanism as set forth in claim 2, wherein the protruding portion operates in conjunction with a movable stopper of a stacker disposed downstream of the form processing section. mechanism.