JPS61111257A - Paper conveying device - Google Patents

Abstract

PURPOSE:To prevent the forward end of a paper from directing downward during shifting to a release position and to enable reliable conveyance of a paper, by a method wherein the maximum width, extending horizontally orthogonal to the conveyance direction, of the contact surface of a stop member is decreased over the minimum lateral width of the widths of papers. CONSTITUTION:A contact surface 20, positioned between forward end surfaces C1, C2, and C3 of an auxiliary member 19 and serving to stop a paper, is 2 spots of D1 and D2 and a width l1 between both side ends of D1 and D2 is decreased over a minimum width lp of widths of papers conveyed and stopped. When the stop member 13 is rotated from a stop position and shifted to a release position, even if the forward end of the paper is pressed downward, the forward end of the paper is not pressed downward throughout the whole width but only a portion making contact with the D1 and D2. Further, the forward end of the paper is reliably prevented from directing downward through paper elasticity of a portion, positioned facing forward end surfaces C1, C2, and C3 of the auxiliary member 19, and this, when shifted to a release position, enables the paper to be reliably conveyed from the forward end thereof with the aid of a guide surface 21.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a paper conveying device, and particularly to a paper conveying device that conveys paper to a predetermined position of a processing device that processes paper by keeping it stationary horizontally at a predetermined position and then stopping the paper. In other words, it relates to a paper conveyance device that restarts paper conveyance after processing is completed.

[Prior art]

Generally, when making multiple copies of a document made up of multiple sheets of paper, for example, first place the first sheet of paper on the manuscript table and make a predetermined number of copies, then replace the first sheet of paper with the second sheet. Place the paper on the document table and make a predetermined number of copies, and then similarly place all the papers one by one on the document table and make a predetermined number of copies.
On the other hand, the copies with the first sheet of paper are sorted into separate locations one by one, and the copies with the second sheet of paper are stacked one by one on top of them, and all copies are made in the same way. It is common practice to copy multiple copies of multiple documents by stacking them one copy at a time, but such work is extremely complicated and time-consuming.

For this reason, sorters (automatic sorting devices) have been commercialized as devices that automatically sort the copies one by one, but a sorter requires a large amount of space to sort 20 or 30 or more copies. This is indispensable, and moreover, it is time-consuming to take out the sorted documents one by one from their respective stacking positions.

Recently, when sending a stack of documents consisting of multiple sheets of paper, the first sheet of paper is first conveyed onto the manuscript table, one copy is made, and then returned to the original stack position, and then the next sheet is sent. After transporting the second sheet of paper onto the manuscript table and copying only one copy, I return it to the original document stacking position, copying all the sheets one by one in the same manner, and then stacking the original documents. For example, there is a device that returns to the position and makes only one copy of the document consisting of all the sheets, and then continues to repeat the above operation to make a predetermined number of copies of the document. 34416
Japanese Utility Model Publication No. 51-55445 and its full text, Japanese Patent Publication No. 55-27343, Japanese Patent Publication No. 1983-
Various proposals have been made in Publication No. 37536 and the like.

However, in this type of device, the following items must be carried out reliably.

That is, (1) To securely separate each sheet of paper from a document.

This is because if two or more sheets of paper are fed multiple times, some copies of the document will be missing.

(2) Correctly transport the paper separated from the document to a predetermined position on the document table.

This is because if the paper is not properly placed on the document table, proper copying will not be possible, resulting in parts of the document being missing or skewed copies being made.

(3) Each paper in the document must not be damaged, such as wrinkles or tears.

This is especially important when there is no backup of the manuscript.

(4) Correctly return the copied paper to the original document stack position.

This is because if the paper is not correctly returned to its original document stack position, it will interfere with subsequent copy preparation.

(5) Regardless of the size or thickness of the paper to be copied, each operation such as conveyance, copying, and return to the original stacking position must be performed reliably.

This is because the paper constituting the document may have different sizes and thicknesses.

Of the above items, especially related to (2) and (3), the paper is conveyed to a predetermined position on the document table of the copying device and stopped, and then the paper conveyance is resumed after copying is completed. Various paper conveyance devices have been proposed in the past, as shown in FIG.

The device shown in FIG. 9(a) is provided with a stop member 13a that moves up and down at the paper stop position of the document table 10a, and when this stop member 13a is in the raised position, the paper transported by the transport belt lla is stopped. The stop member t3a stops the paper by coming into contact with the leading end, and when the stop member t3a is in the lowered position, the stop member t3a releases the contact with the paper and causes the paper to be transported again by the transport bell)lla.

Furthermore, the one shown in FIG. 9(b) is a stop member 13b that rotates around a shaft 25b inside the conveyor belt 11b.
is provided so that its lower limit position is located at the paper stop position of the document platen 10b, and when the stop member 13b is at the lower limit position, it comes into contact with the leading edge of the paper conveyed by the conveyor belt 11b to stop the paper, and When the stop member 13b is at the upper limit position, it releases its contact with the paper and causes the paper to be transported again by the transport bell)llb.

Furthermore, Fig. 9 (c-1) (c-2) (c -
The one shown in 3) is a rod-shaped stop member 13 having a notch.
c is provided to rotate around its central axis at the paper stop position of the document table 10c, and the stop member 13c is located at the ninth paper stop position.
When the notch is at the angle shown in Figure (c-2), the conveyor belt l
When the stop member 13c is at the angle shown in FIG. 9(c-3), the notch releases the contact with the paper and stops the paper conveyed by the conveyor belt 11.
The paper is conveyed again by C.

However, in such conventional methods, the ninth
In the case shown in Figure (a), the drive device for moving the stop member 13a up and down must be installed on the copying machine main body side below the plane of the document table 10a. Disadvantages of requiring relatively large space y
There is.

Furthermore, in order to incorporate the stop member 13b into the transport belt llb, the one shown in FIG.
Therefore, there is a drawback that the conveying ability of the conveyor belt llb is reduced.

Furthermore, although the devices shown in Figure 9 (C-1), (C-2, and C-3) are compact and have a simple mechanism, they are not reliable because the paper often slips through at the stop position. In order to ensure stable paper stopping performance, please refer to Figure 9 (C-2).
), the paper must be stopped within the range indicated by l.
If it comes off, there is a drawback that the paper is stopped at the edge portion E during the release operation as shown in FIG.

[Purpose of the invention]

This invention eliminates the drawbacks of the conventional methods as described above, and pneumatically feeds the paper to the predetermined position of a processing device that processes the paper by keeping the paper stationary at a predetermined position. It is an object of the present invention to provide a paper conveyance device that can stop the paper at 100 degrees and perform these operations with a compact configuration without causing damage such as wrinkles, tears, or folding of the leading edge of the paper.

[Structure of the invention]

The present invention provides a filter paper conveying apparatus in which paper is conveyed to the predetermined position of a processing apparatus for processing by keeping the paper stationary on a plane at a predetermined position, the paper is stopped, and the conveyance of the paper is resumed when the processing is completed. A stop member having an abutment surface and a guide surface is disposed at the leading end position of the paper in the conveyance direction, and is rotatable about an axis to be switchable between a stop position and a release position. The maximum width of the abutting surface perpendicular to the paper conveyance direction and the horizontal direction is narrower than the width of the smallest of the sheets to be stopped, and the abutting surface is on the stationary plane when in the stopping position. The guide surface has a configuration in which the guide surface stands up from the top and stops the paper by coming into contact with the leading edge of the paper, and when the guide surface is in the release position, the contact surface sinks below the stationary plane and the guide surface allows the paper to be conveyed. are doing.

[Embodiments of the invention]

Embodiments of the invention shown in the drawings will be described below.

FIG. 1 shows an automatic document handling device to which the paper conveyance device according to the present invention is applied. It is growing.

A paper feeder 3 is provided on the right side of the set table 2 in the figure,
This paper feeding device 3 includes a paper feeding belt 5 suspended between rollers 4, 4, a gate 6 and a stopper 7 provided on the paper feeding belt 5, a paper feeding roller 8, a paper feeding guide 9.
It consists of 9.

In front of the paper feed guide 9.9, there is a document table 1 of the copying machine.
A conveyor belt 11 is provided, which is arranged on the rollers 12, 12 and is stretched between rollers 12,12.

A stop member 13 is provided at the left end in the drawing of the document table 10 at a predetermined copying position, and a paper ejection device 14 is provided from the left side to the top in the drawing. It is composed of rollers 15.15 and a paper discharge guide 16.

A paper alignment belt 17 is provided between the end of the paper discharge guide 16 and the cent stand 2, and the paper alignment belt 17 is stretched between rollers 18 and 18.

The stopping member 13 is connected to the document table 1 as shown in FIG. 2.3.
The CI, C2, and 03 surfaces abut against the end surfaces of the document table 10 to fix the document table 10, and are combined with an auxiliary member work 9 whose upper surface is continuous at substantially the same height as the top surface of the document table 10,
Further, the stop member 13 rotates around an axis O disposed above the upper surface of the document table 10 to switch between the stop position shown in FIG. 2(al) and the release position shown in FIG. 2(b). It is configured so that it can be used.

That is, the stop member 13 has an abutment surface 20 and a guide surface 21 that are at an angle of approximately 90 degrees to each other, and when in the stop position, the abutment surface 2
0 stands up from the top surface of the document table 10, and when it is in the release position, the contact surface 20 sinks below the top surface of the document table 10 as shown in FIG. 3(C) (d), and the guide surface 2
1 are arranged in a row at an angle with respect to the upper surface of the document table 10. .

In this case, the tip surfaces C1, C2, 03 of the auxiliary member 19
The contact surface 20 that is located between and stops the paper is Dl and D2.
However, since the width z1 between both ends of the re-contact surfaces Di and D2 is narrower than the width 1p of the smallest sheet of paper to be conveyed and stopped, the stopping member 13 cannot be rotated from the stopping position. Even if the leading edge of the paper is pushed down when moving and switching to the release position, the leading edge of the paper is not pushed down over its entire width;
When the stop member 19 is switched, the leading edge of the paper is directed downward due to the elasticity of the paper in the part that is in contact with the front end faces C1, C2, and C3 of the auxiliary member 19. This is reliably prevented, so that when the release position is reached, the paper is reliably conveyed by the guide surface 21 from its leading edge.

Further, as shown in FIG. 5(a), when the stop member 13 is at the stop position, the angle θ1 formed between the contact surface 20 and the upper surface of the document table 1o is approximately 90'', and FIG. ), when the stop member 13 is in the release position, the angle θ2 between the guide surface 21 and the upper surface of the document table 1o is approximately 30°.

Next, the operation of the above will be explained.

A document 1 consisting of a plurality of originals (hereinafter simply referred to as paper) set in a stacked state on the setting table 2 is:
After the gate 6 is opened, the paper is conveyed by the paper feed belt 5 and moved to the stopper 7.

Here, the document 1 is subjected to a sorting operation by the paper feeder 3 to separate only the lowest sheet of paper, and this one sheet of paper is subsequently conveyed to the paper feed belt 5 and reaches the paper feed roller 8. Next, the paper is conveyed by the paper feed roller 8 along the paper feed guide 9.9 to the conveyor belt 11, and then the leading edge of the paper is brought into contact with the abutting surface 20 of the stop member 13 on the document table 10 by the conveyor belt 11. It is conveyed until it touches the surface.

At this time, the stop member 13 is at the stop position and the contact surface 20 stands up from the upper surface of the document table 10, so as shown in FIG.
) and FIG. 5(a), the leading edge of a sheet of paper P comes into contact with the contact surfaces 20, Dl and D2, and is reliably stopped at that position.

In this state, only one copy is made, and when the copying is completed, the stop member 13 is switched from the stop position to the release position, so that the paper is copied as shown in FIGS. 4(b) and 5-). The abutment surface 20 is removed from the tip,
The guide surface 21 and the paper ejection guide 1 are moved by the conveyor belt 11.
6 and reaches the paper ejection roller 15.15, then the paper ejection roller 15.15 transports the paper along the paper ejection guide 16 and reaches the paper alignment belt 17, and then the paper alignment bell l -17, the document 1 is returned to the uppermost position on the cent table 2, and its leading edge is aligned with the Gatero.

When switching the stop member 13 like this, the paper P
Since the leading end of the paper P is reliably prevented from being directed downward as shown in FIG.
It is transported while being positioned above.

Then, the second sheet of paper from the bottom is separated from the lowest position in the same manner as described above, fed, conveyed, and stopped at a predetermined position by the stop member 13 that has been switched to the stop position. In this state, only one copy is copied, and when the copying is completed, the stop by the stop member 13 is released, and the paper is conveyed and ejected again.
The document 1 on the set table 2 is returned to the uppermost position at that time, and its leading edge is aligned with the gate 6.

Thereafter, in the same manner, all the sheets of document 1 are fed, conveyed, stopped, one copy is copied, conveyed and discharged, and are placed at the top of document 1 on set table 2 each time 7 *;It'''1
”<y-) 6°, [,16a6.=゛lF*1 One copy of document 1 will be made, which consists of copies of all the sheets of paper that make up If this is done, a predetermined number of copies of document 1 will be made.

In addition, in the embodiment, the contact surface 2 of the stop member 13
0 and the guide surface 21 is approximately 90'', but the angle is not limited to this angle.

Further, in the above embodiment, the axis O around which the stop member 13 rotates was shown only at its center, but specifically, FIG.
Either the rotation shaft 22 is directly attached to the stop member 13 as shown in a), or the rotation shaft 22 is attached to the stop member 13 as shown in FIG. 7(b).
This plate 23 is attached to the end of the plate 23.
The stop member 13 can be fixed by attaching the rotary wheel 22 to the stop member 13, or by attaching the holder 24 to the stop member 13 and then attaching the rotary shaft 22 to the holder 24 as shown in FIG. 7(c). and the rotation shaft 22 may be attached.

Further, in the above embodiment, the copied paper is returned to the original stacking position of the documents, but the invention is not limited to this. For example, the copied paper is returned to the original stacking position of category i. It goes without saying that the application can be applied to an apparatus for conveying to another predetermined position, and also to a processing apparatus for performing appropriate processing other than copying. ), the contact surface 20 is D
Although the configuration is shown in which there are two locations, L and D2, the configuration is not limited to this. Even if the part D3 is 4, as shown in FIG. 8(0),
It goes without saying that the portions D4, D5, D6, and Dl may be located at different locations, and are not limited to the number of locations.

〔Effect of the invention〕

With the above-described configuration, the present invention allows the paper to be stopped at a predetermined position and reliably transports the paper to the predetermined position of the processing device for processing, and reliably stops the paper at the predetermined position. It has excellent effects such as being able to operate with a compact structure without causing damage to the paper such as wrinkles, tears, or folding of the tip.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an automatic document handling device to which a paper conveyance device according to the present invention is applied, and FIG. 2 shows a stop position state (a) and a release position state (b) of a stop member of the paper conveyance device according to the present invention. Perspective view, Figure 3 (a) (b) (c)
(d) is the line A1-A'1 and Bl-B shown in Figure 2.
Cross-sectional views taken along lines '1, A2-A'2, and B2-B'2, Figures 4(a) and 4(b) are explanatory diagrams of the state of use of the one in Figure 2, and Figure 5( a) (b) is a sectional view taken along the Bl-B'1 line and Bl-B'2 line of the thing shown in Fig. 4, and Fig. 6 is an explanation showing the state in which the leading edge of the paper being conveyed is rolled up. , and 7 are explanatory diagrams showing how to attach the rotating shaft of the stop member, and FIG. 8 (a) (bl
(C) is an explanatory diagram showing the state in which the auxiliary member and the stop member are combined, FIGS. 9(a), (b) (c-1) (C2
) and (c-3) are explanatory diagrams showing examples of conventional ones, respectively. 1...W type 2...Set stand 3...Paper feeder 4.12.18...Roller, 5...Paper feed Belt 6...Gate 7...Stopper 8...Paper feed roller 9...Paper feed guide 10...Original table 11... ...Transport belt 13...Stop member 14...Sheet discharge device 15...Sheet discharge roller 16...Sheet discharge guide 17...・Paper alignment belt 19... Auxiliary member 20... Contact surface 21... Guide surface 22... Rotation shaft 23... Plate 24... Holder P... Manuscript (paper) 1 (J (C) Figure 3 (b) (d)

Claims (2)

[Claims] (1) In a paper conveying device that conveys paper to the predetermined position of a processing device that processes the paper by keeping it stationary on a plane at a predetermined position, and then resumes conveying the paper after processing, the paper at the predetermined position is A stop member having an abutment surface and a guide surface is disposed at the leading end position in the conveyance direction so that it can be rotated around an axis and switched between a stop position and a release position. The maximum width of the contact surface perpendicular to the paper conveyance direction and the horizontal direction is narrower than the width of the smallest of the sheets to be stopped, and the contact surface is separated from the stationary plane when in the stop position. The guide surface is configured to stand up and come into contact with the leading edge of the paper to stop the paper, and when in the release position, the abutment surface sinks below the stationary plane and the guide surface allows the conveyance of the paper. A paper conveying device characterized by: (2) The paper conveying device according to claim 1, wherein the contact surface and the guide surface form an angle of approximately 90 degrees to each other.