JPS5925790Y2 - Bending guide for conveying paper sheets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a path changing mechanism for paper sheet conveying devices.

Conventionally, in machines that handle paper sheets containing film, such as optical character reading devices, optical mark reading devices, printers, and card processing machines, the paper sheets are guided to a paper guide of an appropriate width and fed. Paper sheets are conveyed by rollers or feed belts, but when attempting to bend them to change their course, the following problems often occur.

That is, paper sheets with a relatively simple structure have the disadvantage that due to the rigidity and texture of the paper sheets, they do not bend properly and may come off the guide or become wrinkled, causing jams in the machine.

In addition, paper sheets with relatively complex structures are less likely to jam due to the rigidity or texture of the paper, but if a paper jam occurs, it will take a lot of effort to repair and the price will be high. Ta.

In order to eliminate the above-mentioned drawbacks of the conventional bending guide for conveying paper sheets, the present invention is designed to increase the width of the paper guide on the bending direction side from the vicinity of the point just before the bending for changing the course until the paper sheet almost conforms to the bending direction side. The width between is perpendicular to the conveyance direction of the paper sheets being handled (
(Hereinafter, this width will be referred to as the width of paper sheets or sheets) The width of the other parts is set to a width close to the largest width of paper sheets or paper sheets, and the width of other parts is made narrower than the smallest width of paper sheets to be handled. It is possible to bend paper sheets smoothly and change the direction of conveyance without any stagnation, and the structure is simple and inexpensive, and even if a jam occurs, it is easy to detect and repair. The purpose of the present invention is to provide a bending guide for conveying paper sheets.

Next, an example of a conventional bending guide for conveying paper sheets shown in FIG. 1 will be explained.

In this example, as shown in the side view of b, a sheet of paper conveyed flat is folded upward.

The paper 1 is guided by a side guide 3 that guides the paper while being in contact with the reference side 2 of the paper, a paper guide 5 on the bending direction side, and a paper guide 4 on the opposite side in the bending direction that opposes these. Feed roller 6.6'
and 7, 7' to be conveyed in the direction of arrow Z.

The sheet 1 is bent upward at the bending curve XY and changes its course.

In this example, since the paper guide 4 on the opposite side in the bending direction is on the lower side, the width is set close to the maximum width of the paper sheets to be handled so that the paper 1 does not fall or sag due to gravity.

The paper guide 5 on the side in the bending direction makes it easy to detect jams.
It is smaller in width than the minimum width of paper sheets to be handled for easy repair.

However, with such a structure, the rigidity of the paper is strong, or the paper has an inverted gutter shape with a convex portion 1a in the bending direction as shown in Figure 4a, or the reference side as shown in Figure 4 If the gap 1b sandwiched between the opposite side of side 2 and the side in the conveying direction has an undesirable tendency such as being bent in the opposite direction to the bending direction, the paper guide on the bending direction side will If the above-mentioned habit cannot be corrected, it becomes impossible to bend the paper 1 upward smoothly and convey it, resulting in the occurrence of jam wrinkles.
There are drawbacks that can cause problems such as damage.

FIG. 2 shows another example of a conventional bending guide for conveying paper sheets.

The difference from the one in Fig. 1 is that in order to suppress the occurrence of jams, both the paper guide 14 on the opposite side of the bending direction and the paper guide 10 in the bending direction have a wide width close to the maximum width of the paper sheets to be handled, and Roller 16.16', 1
7.17' is also made with a similar width.

Other same reference numerals as in FIG. 1 indicate the same parts.

With such a structure, even if the paper has strong rigidity, and even if the paper has a peculiarity as shown in Figure 4 a, l), the width of both paper guides 14 and 15 is wide, so the gap between them temporarily prevents the tendency to become noticeable. It has the advantage that it is straightened and further straightened greatly when passing between the feed rollers 16 and 16', so that it can smoothly bend in the desired direction along the XY line and change its course. When a phlegm jam occurs, it is difficult to find the location of the jam, and in order to repair it, one of the paper guides must be removed.

Also wide feed rollers 16, 17 or 16', 17
Not only does it take a lot of time and effort to repair without damaging the paper, as both paper guides and feed rollers have to be removed, and both paper guides and feed rollers are all wide, making them expensive and having the disadvantage of high conveyance resistance. be.

Furthermore, there is an example shown in FIG. 3 that improves these drawbacks.

This is a conventional curved guide for conveying paper sheets shown in Fig. 1, in which a guide roller 8 with a width close to the maximum of the paper to be handled is provided on the bending side at the point of the folding line XY. The paper guide 4 is made of a slippery material so that it always slips with the paper guide 4 when driven.

Other same reference numerals as in FIG. 1 indicate the same parts.

In this example, the paper 1 is connected to the guide roller 8 and the paper guide 4 on the opposite side of the bending direction (at least the width is wide near the folding line XY)
Since the sheet is held between the sheet and the sheet and is stretched by the guide roller 8, it is possible to correct the undesirable bending behavior as shown in Fig. 4 a and l), while also having the advantage of smoothly bending the sheet in the desired bending direction and changing the course. However, when a paper jam occurs, it is difficult to remove the wide guide roller 8 to remove the jammed paper, and the service space increases due to removing the paper without damaging it. Since a wide guide roller is added, it has the disadvantage of being somewhat expensive.

Next, an embodiment of the bending guide for conveying paper sheets according to the present invention, which eliminates these drawbacks, will be described with reference to FIG.

The paper 1 contacts the reference side 2 and guides the paper through the side guide 3
and feed rollers 6, 6' and 7, 7 guided by the paper guide 4 on the opposite side in the bending direction and the paper guide in the bending direction 25 and driven by a conventional method such as an electric motor.
It is the same as the conventional example shown in FIG. 1 in that the paper is conveyed in the direction of the arrow Z while being held between the handles 1 and 2.

Therefore, the same reference numerals indicate the same parts. However, the width of the paper guide 25 on the bending direction side is kept at a width close to the maximum size of the paper sheets to be handled from the point just before the folding line , and the paper guide 4 on the opposite side in the bending direction should also have the above-mentioned wide width at the front of the folding line is a feature.

In the example shown in Fig. 5, the paper guide on the opposite side of the bending direction is located below the paper sheets, and the paper sheets that protrude beyond it in the small medium sag due to gravity, or are pulled by that part and fall. Because there is fear, the whole thing is covered with a large hood.

Further, as in the bending direction paper guide 25 shown in the figure, an opening introduction guide 25a is provided at a portion of the paper guide where the paper guide transitions from small to medium width so that paper can be easily introduced between the guides.

In addition, as shown in the figure, the shape gradually changes from small to medium to wide and slanted, so in conjunction with the work of the introduction guide 25a, the paper is introduced smoothly, but if the work of the introduction guide is perfect, it will gradually change from small to medium. There is no problem even if it is spread widely.

Because of the structure described above, the rigidity of the waste paper is strong enough to introduce the paper 1 in a range close to the gold mine with an appropriate gap just before the folding line XY, or it is preferable as shown in Figure 4 a and l) Even if the paper has any curls, it is corrected and then bent in the desired direction, and the paper guide 25 on the bending direction side maintains its wide width until the paper sheet is more or less adjusted to the bending direction. The bending path can be changed smoothly without causing a jam, and even if a jam occurs, the other parts are small and medium, so it is easy to find and repair.The structure is simple and has sufficient functionality. It is possible to provide an inexpensive bending guide for conveying paper sheets.

Fig. 6 shows another embodiment of the bending guide for conveying paper sheets according to the present invention. What is different from the example shown in Fig. 5 is that the path after the change due to bending of the paper has a curved surface with a larger radius as it is conveyed. This is the point that is bent by .

Therefore, if the object is conveyed along the same course, it is possible to change the direction by 180 degrees.

Note that the technical concept, function, and effect are completely the same as the embodiment shown in FIG. 5, and the same reference numerals indicate the same parts.

However, in FIG. 6, the width of the paper guide 4 on the opposite side of the bending direction is shown as a large width over the entire area, but when the paper is bent and conveyed with an appropriate curvature, the bending rigidity increases due to the curvature of the paper. It is possible to prevent deformation of paper that is inconvenient for bent conveyance and sagging of paper due to the effect of gravity to the extent that it does not cause inconvenience to conveyance, and by using an appropriate curvature, it is possible to prevent bent conveyance such as curled paper. Since it is possible to correct any inconvenient deformation, it is possible to make the width wide up to the vicinity of the beginning of the course change bend, and then change it to small or medium width.

By giving an appropriate curvature to the paper in the form a or b in Fig. 4 so that the generatrix is a line perpendicular to the reference side 2, the previous curve in the form a or b in Fig. 4 can be changed. It is clear that the paper will be bent uniformly in the direction of bending and conveyance, just as it would have been without it.

In addition, in the explanations from Figures 1 to 6, the side guide guides the reference side of the paper in all examples, but the positional accuracy in the width direction of the paper in the paper sheet conveying device is important. In the case of a low value, the side guides are not necessary, and the side guides are not an essential component of the present invention.

FIG. 7 shows another embodiment of the bending guide for conveying paper sheets according to the present invention, and the technical idea is the same as that in FIG. 5, but
When conveying very wide paper, the feed belt (feed roller in Figure 5) is brought to the center of the paper width to achieve dynamically balanced drive.

That is, the paper 1 is guided by a paper guide 34 on the side opposite to the bending direction and a paper guide 35 on the side in the "bending" direction, and a feed bell l-36, which is driven by a conventional method such as an electric motor, is placed approximately in the center of the wide paper width. 3 (5 and 37.37
' and transported.

In addition, in this example, since the path change is upward, the bending direction paper guide has a width close to that of the largest paper, as shown as 35', from just before the folding line XY until the paper almost conforms to the bending direction. However, the other parts of the width of the paper are designed so that there is no fear that the paper will sag due to gravity or that an inconvenient habit will be promoted. Just set something up.

In addition, if the paper guide 34 on the opposite side of the bending direction is wide only in the vicinity of the front part of the folding line It is recommended to use a wide width to avoid the risk of causing problems such as smearing or other inconvenient habits during transportation.

As in the embodiment shown in FIG. 5, introduction guides 35a, 35'a', 35'a'' may be provided at the front edge of the paper guide 35' in the bending direction.

In addition, in cases where wide paper sheets are handled as in this example, the paper guide on the side that is only partially wide is not necessarily made of a single board for the purpose of ease of material removal and processing, but is
Even if it is separated into separate pieces like 5.35' and 35'', there is no substitute for the effect.

The structure described above has the same effect as the one shown in FIG. 5, and since the feed belt is located approximately in the center of the sheet, even wide sheets can be conveyed smoothly and without mechanical strain.

In addition, 5th. 6. 7, the course after the change is upward, but if the course is changed downward, the upper side becomes the paper guide on the opposite side of the bending direction, and the 5th. 6.
Figure a in Figure 7 has the same structure, function, effect, etc. as described in Figure 5.6.7, by turning the figure to the opposite side in exactly the same way.

(In other words, the adjectives may be replaced, such as 0 on the bending direction side and 0 on the opposite side in the bending direction.

) As is clear from the above explanation, the bending guide for transporting paper sheets of the present invention can bend paper sheets easily and smoothly and change their course without stagnation, even when the paper sheets are highly rigid or have undesirable curls. The structure is simple and inexpensive, and even if a jam should occur, it can be easily discovered and repaired.

[Brief explanation of the drawing]

FIG. 1a is a plan view showing an example of a conventional bending guide for conveying paper sheets. b is a side view with side guides removed. FIG. 2a is a plan view showing another conventional example. b is a side view with side guides removed. FIG. 3a is a plan view showing an example of an improved conventional one. b is a side view with side guides removed. FIG. 4a is a perspective view showing an example of an undesirable habit of paper. b is a perspective view showing another example of an undesirable habit of paper; FIG. 5a is a plan view showing an embodiment of the bending guide for conveying paper sheets of the present invention. b is a side view with side guides removed. FIG. 6a is a plan view showing another embodiment of the present invention. b is a side view with side guides removed. FIG. 7a is a plan view showing still another embodiment of the present invention. b is a side view. 1... Paper, 2... Reference side, 3... Side guide, 4°14, 34... Paper guide on the opposite side of the bending direction, 5,15°25, 25', 35.35' , 35"
... Paper guide on the bending direction side, 6. 6',
7. 7', 9. 9', 16. 16',
17. 17'...Feed roller, 8...Guide roller, 25a, 25'a. 35'a, 35'a', 35'a''...Introduction guide, 36.36', 37°37'...Feed belt, XY...Folding line, Z...Paper conveyance direction.

Claims (1)

[Scope of utility model registration request] Bending in the course changing mechanism by the paper sheet target of a paper sheet conveying device that pinches the paper sheets from both sides with paper guides and conveys the sheets by sandwiching them between feed rollers or feed belts driven by ordinary means. The width of the paper guide on the direction side should be set to a width close to the maximum width perpendicular to the conveyance direction of the paper sheets being handled, from the point just before the change in direction until the paper sheets have almost adjusted to the bending direction side, and the width should be the same as the width of the paper guide when bending. The width of the paper guide on the opposite side of the bending direction, which is opposite to the paper guide on the direction side, should be the above-mentioned wide width in the vicinity of the part immediately before the direction change bending, and the other parts of both paper guides should be of a size smaller than the minimum width of the paper sheets to be handled. A paper sheet characterized in that the paper guide has a small width, but the paper guide has the above-mentioned wide width in the portion where the paper sheet may deform or fall inconveniently during conveyance due to gravity, the curl of the paper, etc. Bending guide for transportation.