JPS606557A - Paper conveyor - Google Patents

Abstract

PURPOSE:To facilitate the change of the conveyed direction of paper, by conveying the paper as it is previously cambered. CONSTITUTION:Paper inserted in between upper and lower rollers has the central part slightly cambered at 5b by the action of an opening 10 between the upper rollers and the central lower roller 11 whose diameter d1 is slightly larger than the right and the left lower rollers. The paper is then moved in a direction A and comes into contact with a restrictor 7, which is made so oblique that the angle theta1 between the longitudinal direction of the restrictor and that of the paper coming into contact therewith is obtuse. As a result, the top 13 of the convexly cambered central part of the paper 5 first comes into contact with the restrictor 7. After that, both the side edges of the paper come into contact with the restrictor 7 while curving. The direction of conveyance of the paper 5 is thus changed along the obliqueness of the restrictor 7.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a paper feeding device, and more particularly to a paper feeding device that feeds and feeds paper in a pre-curled state to facilitate changing the feeding direction of the paper. Regarding the sending device.

[Prior art and problems]

2. Description of the Related Art Conventionally, for feeding paper into a copying machine, for example, a manual feed roll as shown in FIGS. 1 to 3 has been known. That is, Fig. 1 is a perspective view of the manual feed roll, Fig. 2 is a sectional side view of the main part, and Fig. 3 is a front view of the roll. A plurality of rolls 3a and 4 are provided at opposing positions of the upper shaft 1 and lower shaft 2, which are transmitted as rotational forces in opposite directions.
a, 3b, 4b, and insert the paper 5 in the direction of arrow A between the upper rolls 3a, 3b and the lower rolls 4a, 4b, along the paper guide table 6 as shown in FIG. The paper 5 is fed in the direction of arrow A by rollers 3a, 3b, 4a, and 4b, and the paper placed at the tip of the paper guide table 6 is guided.

Then, the leading edge of the paper 5 comes into contact with a regulating means 7 for changing the feeding direction of the paper, and the paper 5 is fed in the direction of arrow B (downward).

In this case, when the leading edge of the paper 5 comes into contact with, for example, a vapor guide of the regulating means 7 and the feeding direction is changed, it is difficult to bend the paper if it is curled in a concave shape than if it is curled in a convex shape. As shown in FIG. 4, the paper 5 was bent in an extremely unnatural manner 5a, which obstructed the paper feeding and was likely to cause a paper jam.

Paper curls depending on the moisture content, air humidity, and direction of the paper. For example, if the paper curls in a concave shape, the leading edge of the paper that comes into contact with the regulating means 7 that extends downward will move downward, as shown in FIG. It is easy to cause paper jams without bending. Also, since both ends of the sheet hit the regulating means 7 first, both ends may be bent first, and in extreme cases, the sheet will bend as shown in FIG.

[Purpose of the invention]

It is an object of the present invention to provide a paper feeding device which eliminates the above-mentioned drawbacks, and which prevents paper from curling in an inappropriate direction when the paper is fed and changes direction. to provide transmission equipment. For this purpose, the paper is curled in advance in a direction in which paper jams are less likely to occur.

[Key points of the invention]

In order to achieve the above object, the present invention provides a paper feeding device that feeds paper, a curl forming device that curls the paper in advance, and a direction change in the feeding direction of the paper curled by the curl forming device. The method is characterized in that the paper surface direction of the curled sheet and the plate surface direction of the restriction means are inclined and intersect with each other.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 7. FIG. 5 is a perspective view of essential parts of the feeding device of the present invention, FIG. 6 is a side view thereof, and FIG. 7 is a view taken in the direction of arrow A in FIG. 5 or 6. In FIGS. 5 to 7, the upper roll has a notch 1o on the upper shaft 1 that connects the first and second rolls 3a and 3b with a predetermined distance of 0'+.
The lower roll has first and second rolls 4a and 4b on the lower shaft 2, and a third roll 11 is arranged between the first and second rolls. Lower mouth □−
The first and second rolls 4a and 4b of the upper roll are arranged so as to be in contact with the upper first and second rolls 3a and 3b, and have a length of 12 or more than the upper first and twentieth rolls 3a and 3b. Each of them is formed short.

A third roll 11 is provided on the lower shaft 2 facing the cutout portions 10 of the first and second rolls of the upper roll, and has a diameter d2 that is smaller than the diameter d2 of the first and second rolls 4a and 4b. The diameter d1 of the roll 11 of No. 3 is selected to satisfy the relationship dl>d2. The paper 5 inserted in the direction of arrow A along the paper guide table 6 is placed between the upper and lower 10th rolls and the second roll, and the rotation of the rolls is transmitted to the paper 5 by pressure contact between these rolls, and the paper is Transport takes place. The central part of the paper inserted between the upper roll and the lower roll has a diameter dl that is somewhat larger than the diameter of the first and second rolls on the left and right of the notch IO of the upper roll and the center of the lower roll. As a result of this action, the paper becomes slightly convexly curled as shown in 5b of FIG. 7 and moves in the direction of arrow A as shown in FIG. 6, and comes into contact with the regulating means 7 as shown in FIGS. 8 and 9. . In this case, the longitudinal direction of the regulating means 7, which transports the paper horizontally and is arranged to intersect with the paper surface direction of the paper 5;
Since the paper is arranged so as to extend downward and be inclined so that the angle θC formed with the plane direction of the paper is an obtuse angle, the central tip 13 of the paper 5 curled in a convex manner comes into contact with the regulating means first, and then Both edges of the paper are bent when it hits the paper.

Next, as shown in FIGS. 6 and 10, the paper 5 changes its conveyance direction along the inclination of the regulating means 7.

In the above embodiment, the regulating means 7 is extended and inclined downward with respect to the main plane of the paper, and the paper is curled in a convex shape, so that the central edge of the paper hits the regulating means 7 first. As shown, the paper 5 is conveyed horizontally, and the longitudinal direction of the regulating means 7 is arranged to intersect with the main plane of the paper;
If the paper is arranged so as to extend upward and be inclined so that the angle θ2 with the paper surface direction is an obtuse angle, if the paper 5 curled in a concave shape is fed and shifted, the center of the leading edge of the curled paper 5 will be aligned. The paper first hits the regulating means and is folded upward.

In order to select the arrangement of the rollers so that the paper is curled in a concave state, the upper roll shown in FIGS. 5 to 7 may be arranged on the lower side and the lower roll on the upper side. Furthermore, when the paper is conveyed in a vertical state, the angle θ3 formed by the regulating means 7 arranged to intersect with the paper conveyance direction and the paper surface direction is an obtuse angle, as shown in FIG. 12(A). When the above-mentioned regulating means 7 is extended forward and viewed from the front side and the paper is curled in a concave shape and conveyed, the center leading edge 13 of the paper 5 comes into contact with the regulating means first and is bent in the direction of the force indicated by the arrow PR. The paper is sent forward (toward this side) along the regulating means 7. Similarly, in order to send the paper backwards, the first
As shown in Fig. 2 (B), the angle θ4 between the regulating means and the paper surface direction is selected to be an obtuse angle, and the regulating means 7 is extended and inclined backward to curl the paper into a convex shape when viewed from the front. When the paper 5 is conveyed by the paper 5, the center leading edge 13 of the paper 5 contacts the regulating means first and is bent in the direction of the arrow Ba, and the paper is sent backward along the regulating means 7, so that the direction of the paper can be changed extremely smoothly. I can do it.

Another embodiment of the roll for curling paper is shown in the thirteenth example.
A description will be given of FIGS. 17 to 17. The upper roll in FIG. 13 consists of first and second rolls 3a and 3b having a notch 1o at a predetermined interval 111 on the upper shaft 1, and the lower roll consists of a first roller on the lower shaft 2. 4a is provided, and the first roller 4a is configured to be shorter by 12 at each end due to the sum of the lengths of the upper first and second rollers and the notch length Nl.

Figure 14 + al (bl and Figure 15 (al (bl
The configuration shown in FIG. 15(a) shows still another embodiment of the present invention, and in FIG. The roll 4a is made of a soft material, and the first
In Figure 5 (al (b), the first and second rolls 3a and 3b of the upper roll are made of a softer material than the lower roll 4a, so that the upper and lower rolls bite into each other to form a stepped roll. The paper is curled in the same way as the configuration described above. Figure 16 shows a convex portion formed at the center of the tip of the paper guide table 6 to make it easier to curl the paper into a convex shape. be.

Figure 17 shows the first and second rolls 4a+4 of the lower rolls.
A central roll 16 which is 1- larger than the first and second rolls is disposed between b, and the central roll is pivotally connected to the lower shaft 2 in a free state.

It is clear that the various modifications described above can be used to reorient the sheet upwards and reorient the sheet back and forth.

〔Effect of the invention〕

Since the present invention is constructed as described above, it has the feature that it is possible to reduce the jamming that occurs when changing the direction of paper.

[Brief explanation of drawings]

Figure 1 is a perspective view of the main parts of a conventional paper feeding device, Figure 2 is a side sectional view of Figure 1, Figure 3 is a view taken in the direction of the arrow in Figures 1 and 2, and Figure 4 is a conventional paper feeding device. FIG. 5 is a perspective view of essential parts of the paper feeding device of the present invention, FIG. 6 is a side sectional view of FIG. 5, and FIG. FIG. 6 is a view taken in the direction of the arrow in FIG. 6, FIG. 8 is a sectional side view of the main part showing the state in which the paper comes into contact with the regulating means, and FIG. 9 is a perspective view of the paper showing the portion where the curled paper comes into contact with the regulating means. 10 is a perspective view of a sheet of paper whose direction is changed by the paper feeding device of the present invention, FIG. 11 is a side sectional view when the direction of the sheet is changed upward in the paper feeding device of the present invention, and FIG. 12 is a Perspective views of the paper feeding device of the present invention in which the direction of paper is changed back and forth, FIGS. 13 and 14 (a) (bl. FIG. 16 is a side cross-sectional view of a roll of a paper feeder showing an example, and FIG. 16 is a side cross-sectional view of a paper feeder in which a protrusion is provided in the center of the paper feed guide to facilitate curling of the paper.1... Upper shaft 2...lower shirt) 3a,
3b...11th second roll 4a, 4b...1st roll. Second roll 5...JHE6...Paper feed guide table 7...Regulating means 11.12...Third roll 1
4... Convex patent applicant Casio Computer Co., Ltd. Same as above Yoshiyuki Osuga, agent patent attorney for ID Co., Ltd. Figure 1 h Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Figure 8Figure 10Figure 11Figure 12Figure 13Figure 14Figure 15

Claims (6)

[Claims] (1) Includes a paper feeding means for feeding paper, a curling means for curling the paper in advance, and a regulating means for changing the feeding direction of the paper curled by the curling means. The paper feeding device is characterized in that the paper surface direction of the curled paper and the plate surface direction of the regulating means are inclined and intersect with each other. (2) Claim 1, characterized in that the central portion of the curled paper fed to the regulating means is curled so that it comes into contact with the regulating means earlier than both end portions.
Paper feeding device described in Section 1. (3) The paper feeding device according to claim 1, wherein the curl forming means is formed of a pair of rolls, and has a portion in the center of one of the pair of rolls where no roll is formed. . (4) The curl forming means is formed of a pair of rolls, and one of the pair of rolls is provided with a part in the center where no roll is formed, and the diameters of the rolls opposite to the part where the roll is not formed of the other roll are set to each other. The paper feeding device according to claim 1, wherein the paper feeding device has a diameter larger than that of the rolls that are in contact with each other. (5) The paper feeding device according to claim 1, wherein the curl forming means is formed of a pair of rolls, and one roll of the pair of rolls has a length shorter than the other roll. (6) The curl forming means is formed by a pair of rolls, one of the pair of rolls has a sugar content in the center that does not form a roll, and the hardness of the pair of rolls is made to be different from each other. A paper feeding device according to claim 1.