JP2000318906A - Paper sheet reversing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reverse a great amount of paper sheet in a short time without increasing the speed of paper sheet to be carried in and out of a paper sheet reversing means. SOLUTION: An upper side paper sheet reversing means 4 and a lower side paper sheet reversing means 6 for carrying paper sheet in at its end and out at its rear end in a carrying direction are arranged at mutually different heights and branches 8 for changing over the paper sheet to be carried to the direction of the upper side paper sheet reversing means 4 and the lower side paper sheet reversing means 6 are arranged upstream from the upper and lower side paper sheet reversing means 4, 6. Exits 9 where both sheets of paper carried out of the upper side paper sheet reversing means 4 and the lower side paper sheet reversing means 6 arrive are arranged downstream from the upper and lower side paper sheet reversing means 4, 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enclosing / sealing system for folding a sheet such as a form to a predetermined size and enclosing and enclosing the folded sheet in an envelope. The present invention relates to a sheet reversing device for reversing a sheet.

[0002]

2. Description of the Related Art As shown schematically in FIG. 9A, an enclosing / sealing system cuts a continuous form (continuous paper) 200 in which a destination, an address and the like are described in a predetermined position into a predetermined size. Then, the cut sheet 202 is folded to an envelope size such that the destination / address and the like are located on the upper surface, and the folded sheet 204 is sealed so that the destination / address and the like coincide with the window 206A formed in the envelope 206.・ It is to be sealed.

However, as shown in FIG. 9 (B), when the destination, address and the like are printed on the continuous form 200 at the front and back sides and the position opposite to the desired position, the cut sheet 202 is inverted. You have to let it fold.

Therefore, there is known an enclosing / sealing system which incorporates a sheet reversing device for automatically reversing the front and back and front and rear ends of a sheet.

As shown in FIG. 10, the conventional sheet reversing device 80 includes a first roller 16 having a horizontal rotation center axis disposed in a direction perpendicular to the transport direction L, and A second roller 1 disposed upstream and at a lower position and capable of holding a sheet in cooperation with the first roller 16;
8, a third roller 20 disposed downstream and below the first roller 16 and capable of holding a sheet in cooperation with the first roller 16;
An opening 12A is arranged so as to be surrounded by the opening buckles 6, 18, and 20, and a reversing buckle 14 having a paper path 12 communicating with the opening 12A in a substantially vertical internal direction.
Movable stopper 2 disposed on the side opposite to the opening 12A
2 is provided.

The first roller 16 and the second roller 18 constitute a pair of carry-in rollers, and hold the leading edge of the paper conveyed along the upstream carry surface 10A located on the carry-in roller entrance side to hold the leading edge. The paper can be carried into the paper path 12 through the opening 12A, and the first roller 16 and the third roller 20 constitute a pair of carry-out rollers, and the upper end of the paper carried into the paper path 12 , And can be carried out to the downstream transport surface 10B at the same level as the upstream transport surface 10A.

As shown in FIGS. 10 and 11, the reversing buckle 14 is provided with two parallel plates 13 which are parallel in the vertical direction. A paper path 12 into which a sheet can be carried is formed.

As shown in FIG. 11, the parallel plate 13 is formed with three rectangular windows 46 extending in the paper carry-in direction S at equal intervals in the carry-in width direction W. It is possible to protrude into the paper passage 12 through the window 46.

The movable stopper 22 is provided on the parallel plate 13.
Is a substantially comb-shaped member having three protruding portions 22A that engage with the window 46 formed in the paper passage 12. The protruding portion 22A can be brought into contact with the leading end in the carrying direction of the paper carried into the paper passage 12. ing.

The movable stopper 22 is fixed by a screw 30 to a stopper fixing shaft 38 in the unloading width direction W on the downstream side of the reversing buckle 14. The stopper fixing shaft 38 is disposed near the both ends thereof in parallel with the stopper fixing shaft 38, and
Both ends are rotatably supported by a shaft bracket 44 bent and extended toward the stopper fixing shaft 38, and one end of the stopper fixing shaft 38 is connected to the coupling 3.
2 and coaxially connected to a rotary solenoid 34 for stopper. In addition, this stopper rotary solenoid 3
4 is also supported by the shaft bracket 44 via the solenoid bracket 36.

The shaft bracket 44 is movably supported at the center thereof by a rotatable screw 40 vertically disposed at the center of the downstream side of the reversing buckle 14 via a nut 42 screwed with the screw 40. Movable stopper 2 according to the size of paper
The position of No. 2 can be adjusted vertically. This adjustment is made by the motor 26 engaged at the lower end of the screw 40 via the belt 28.

A paper detector 24 is provided upstream of the reversing buckle 14 and in the vicinity of the movable stopper 22 so as to detect whether or not the insertion of the paper is completed. When a sheet is detected (ON state), the control unit (not shown) controls the rotary solenoid 3 for stopper.
4 is turned ON, the movable stopper 22 swings upward, and the paper accommodated in the paper passage 12 is flipped upward.

As shown in FIG. 12A, the sheet reversing device 80 conveys a sheet conveyed along the upstream conveying surface 10A into the paper path 12 by the pair of input rollers 16, 18. At substantially the same time when the leading end of the sheet S in the carrying direction abuts on the movable stopper 22, the sheet detector 24
The rotary solenoid 3 for the stopper is
4 is turned on.

As a result, as shown in FIG. 12 (B), the sheet is flipped up by the movable stopper 22 and the upper end is moved to the discharge roller pair 16, 2.
It is held in by 0 and carried out. The leading and trailing edges and the front and back sides of the sheet before being carried in are both reversed, and are conveyed to the next process device via the downstream conveying surface 10B.

[0015]

However, when the next sheet is carried into the reversing buckle 14 while the sheet is conveyed upward in the reversing buckle 14, the conventional sheet reversing device 80 has a different traveling direction. Paper is flipped buckle 14
Contact, and paper jams, paper breaks and the like occurred. As a result, until the sheet is completely carried out of the reversing buckle 14, the next sheet is
4 could not be carried.

In order to perform the paper reversing process at a high speed, there is no other means except for increasing the rotation speed of the rollers and carrying in / out the paper at a high speed. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a sheet reversing apparatus capable of reversing a large amount of sheets in a short time without increasing the sheet loading / unloading speed in the sheet reversing means. The purpose is to provide.

[0018]

According to a first aspect of the present invention, there is provided an upper sheet reversing means for arranging sheets at different height positions, for loading a sheet from the front end in the conveying direction and discharging the sheet from the rear end. And a lower sheet reversing means, and a branch portion disposed upstream of the upper and lower sheet reversing means, and capable of switching a paper traveling direction to the upper sheet reversing means direction and the lower sheet reversing means direction. An outlet portion, which is disposed downstream of the upper and lower sheet reversing means, and is provided with a sheet carried out from the upper sheet reversing means and a sheet carried out from the lower sheet reversing means. The above object is achieved by a paper reversing device as a feature.

Further, the second invention has a lower reversing buckle having a substantially vertical paper passage therein and having an opening at an upper end of the paper passage, and a vicinity of the lower reversing buckle above the opening. And a lower loading roller pair which is disposed on the upstream side and which can transport the paper into the lower reversing buckle through the opening, and is capable of abutting on the leading end in the loading direction of the paper loaded into the lower reversing buckle. And a lower movable stopper capable of biasing the sheet in the anti-conveying direction, and a position near the upper side of the opening of the lower reversing buckle and on the downstream side,
A lower discharge roller pair capable of holding the urged paper in and out, and disposed above the lower reversing buckle;
An upper reversing buckle having a substantially vertical paper path therein and having an opening at the lower end of the paper path; and an upper reversing buckle disposed below and near the opening of the upper reversing buckle and upstream of the opening. An upper carry-in roller pair capable of carrying a paper into the upper reversing buckle through, and disposed so as to be in contact with a leading end in a carrying direction of the paper carried into the upper reversing buckle,
And an upper movable stopper capable of biasing the sheet in a direction opposite to the carry-in direction, and a portion near the lower side of the opening of the upper reversing buckle;
And, an upper discharge roller pair that is disposed downstream and is capable of holding and urging the biased paper and is disposed upstream of the lower and upper conveyance roller pairs, and the lower conveyance roller pair entrance side Direction, the branch portion capable of switching the paper advancing direction in the upper conveying roller pair entering side direction, and a branch portion disposed downstream of the lower and upper discharging roller pairs, and the sheet discharged from the lower discharging roller pair, The above object is attained by a sheet reversing device, comprising: an outlet portion through which the sheet discharged from the upper discharge roller pair arrives.

Further, in the second invention, the branch portion is formed in a direction of the lower carrying roller pair entrance side, the upper carrying roller pair entrance side, a gap direction between the lower carrying roller pair and the upper carrying roller pair. The outlet portion is configured to switch the sheet traveling direction from the lower exit roller pair, the sheet exiting from the upper exit roller pair, the lower entrance roller pair, and the upper entrance direction. The paper conveyed through the gap between the roller pair may arrive together.

According to a third aspect of the present invention, there is provided a lower reversing buckle having a substantially vertical paper passage therein and having an opening at an upper end of the paper passage, and disposed near the opening of the lower reversing buckle. A lower first roller, which is disposed below the upstream side of the lower first roller, cooperates with the lower first roller to pinch a sheet, and can carry the sheet into the lower reversing buckle. A lower second roller, a lower movable stopper disposed so as to be able to abut on a leading end in a loading direction of the paper loaded into the lower reversing buckle, and capable of urging the paper in a counter loading direction;
A lower third roller that is disposed downstream of the lower first roller and that can pinch and discharge the biased sheet in cooperation with the lower first roller; It is disposed above and has a substantially vertical paper path inside, and
An upper reversing buckle having an opening at the lower end of the paper path;
An upper first roller that is disposed near the lower portion of the opening of the upper reversing buckle and above the lower first roller, and that cooperates with the lower first roller to pinch and convey a sheet;
An upper second roller is disposed above the upper first roller and cooperates with the upper first roller to pinch a sheet and can carry the sheet into the upper reversing buckle. An upper movable stopper that is disposed so as to be able to abut on the leading end of the carried-in paper in the carrying-in direction, and that is capable of urging the paper in the opposite carrying-in direction; An upper third roller capable of pinching and discharging the biased sheet in cooperation with one roller, and an upper third roller disposed upstream of the lower first and upper first rollers; A branching portion capable of switching the paper advancing direction to an entrance side of one roller, an entrance side of the lower first and lower second rollers, and an entrance side of the upper first and upper second rollers; The first and upper rollers are disposed downstream of the first roller, and the lower An outlet through which both the paper discharged from the first and upper first rollers, the paper discharged from the lower first and lower third rollers, and the paper discharged from the upper first and upper third rollers arrive. And the rotation of the lower first and upper first rollers, when the paper advances in the entry direction of the lower first and upper first rollers, the lower first roller
And the entry direction of the lower second roller and the upper first roller.
The above object is achieved by a sheet reversing device, comprising: a control unit for setting a direction reverse to a case where the sheet advances in a direction toward the entrance of the upper second roller.

[0022]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Sheet reversing device 2 according to a first example of the embodiment
Is an upper sheet reversing means 4 arranged above the upstream conveying surface 10A and the downstream conveying surface 10B which are horizontally and at the same level, and arranged below the conveying surfaces 10A and 10B. Lower sheet reversing means 6 which is disposed and upstream of the upper and lower sheet reversing means 4, 6, and the sheet advances in the direction of the upper sheet reversing means 4 and the direction of the lower sheet reversing means 6. A branching section 8 capable of switching the direction, and a downstream side of the upper and lower sheet reversing means 4, 6;
Exit 9 where the paper conveyed from each arrives together
And is provided.

More specifically, the lower paper reversing means 6 has a paper passage 12 in a substantially vertical direction inside thereof, a lower reversing buckle 82 having an opening 12A at the upper end of the paper passage 12, and a lower reversing buckle 82. A lower first roller 84 is disposed in the vicinity of the opening 12A of the side reversing buckle 82, and is disposed below the upstream of the lower first roller 84, and cooperates with the lower first roller 84 to form a sheet. The lower second roller 86, which is nipped and can carry the sheet into the lower reversing buckle 82, is disposed so as to be able to contact the leading end in the carrying direction of the sheet carried into the lower reversing buckle 82, and A lower movable stopper 88 capable of urging a sheet in a carry-out direction opposite to the carry-in direction;
The lower first roller 8 is disposed below the downstream side of the roller.
And a lower third roller 90 capable of nipping and carrying out the biased sheet in cooperation with the fourth roller 90.

The upper sheet reversing means 4 is disposed above the lower reversing buckle 82, has a substantially vertical paper path 12 therein, and has an opening 12A at the lower end of the paper path 12. An upper reversing buckle 82A provided, an upper first roller 84A disposed near the lower portion of the opening 12A of the upper reversing buckle 82A, and an upper upstream roller 84A disposed upstream of the upper first roller 84A to cooperate with the upper first roller 84A. The upper second roller 86A capable of holding the sheet by carrying the sheet and carrying the sheet into the upper reversing buckle 82A, and being disposed so as to be able to contact the leading end in the carrying direction of the sheet carried into the upper reversing buckle 82A, and An upper movable stopper 88A capable of urging the sheet in a carry-out direction opposite to the carry-in direction, and an upper movable stopper 88A disposed downstream of the upper first roller 84A.
And an upper third roller 90A capable of holding and discharging the biased sheet in cooperation with the roller 84A. Since the more detailed constructions of the upper sheet reversing means 4 and the lower sheet reversing means 6 are the same as those already shown for the conventional sheet reversing apparatus 80, the same parts as those of the sheet reversing apparatus 80 have the same reference numerals. The description will be omitted by attaching.

As shown in FIGS. 1 and 2, the branch portion 8 includes a switching plate 48 having a H-shaped vertical cross section in the conveying width direction W, and a center at both ends of the switching plate 48 in the conveying width direction W. , A rotation shaft 50 protruding and fixed to both outer sides in the conveyance width direction W, a base 49 (partially omitted) that rotatably supports the rotation shaft 50, and a vertical shaft. The lower end is rotatably connected via pins 48A on both outer sides of the upstream end of the switching plate 48 in the conveying width direction via pins 48A, and the upper end is rotatably connected to both ends of the drive shaft 52 in the conveying width direction W. Two parallel connecting rods 54, a solenoid arm 56 in which the drive shaft 52 is rotatably supported at the center of the conveyance width direction W, and a path switching rotary solenoid for swinging the solenoid arm 56. And a vertical tension spring 60 mounted between an upper end of the connecting rod 54 and a spring hook 59 disposed above the connecting rod 54 and capable of constantly biasing the connecting rod 54 upward. It is configured.

When the path switching rotary solenoid 58 is in a non-excited state (OFF), the branching section 8 causes the downstream end 48B of the switching plate 48 to be moved by a tension spring 60 as shown by the solid line in FIG. It is biased to a position inclined downward. At this time, the downstream end 48 of the switching plate 48
B is positioned on the entry side of the lower first and lower second rollers 84 and 86 of the lower sheet reversing means 6 so that the sheet can be guided.

On the other hand, the path switching rotary solenoid 58 is excited (ON), the solenoid arm 56 swings downward, and the connecting rod 54 moves downward against the upward biasing force of the tension spring 60. In this case, as shown by the two-dot chain line in FIG. 1, the switching plate 48 is set so as to be at a position inclined above the downstream end 48B. At this time, the downstream end portion 48B is located on the entry side of the upper first and second upper rollers 84A and 86A of the upper sheet reversing means 4 so that the sheet can be guided. The path switching rotary solenoid 58 is set so as to be repeatedly turned on and off at regular intervals in accordance with the sheet conveyance timing.

The outlet 9 has a downstream transfer surface 10B that is continuous with the next process apparatus. As shown by the two-dot chain lines, the lower and upper unloading units guide the unloaded sheets from the upper and lower sheet reversing means 4 and 6 to the downstream transfer surface 10B of the outlet unit 9, respectively. Passage 66, 66A
May be installed.

Next, the operation of the sheet reversing device 2 will be described in detail with reference to the time chart of FIG. 3, and FIGS.

As shown in FIG. 4A, when the path switching rotary solenoid 58 is OFF, the first sheet 100 is carried into the lower sheet reversing means 6.

When the second sheet 102 is conveyed, as shown in FIG. 4B, the path switching rotary solenoid 58 is turned on, and the second sheet 102 is carried into the upper sheet reversing means 4. You. During this time, in the lower paper reversing means 6, the first paper 100 is moved to the lower reversing buckle 82A.
The paper detector 24 detects the leading end of the paper in the carrying direction and is turned ON. In conjunction with this, the stopper rotary solenoid 34 is turned ON, and the first rotation is performed.
The paper 100 is flipped up.

Thereafter, when the third sheet 104 is conveyed, as shown in FIG. 5A, the path switching rotary solenoid 58 is turned off, and the third sheet 104 is guided to the lower sheet reversing means 6. And the first paper 100
Is carried out by the lower first and lower third rollers 84 and 90. On the other hand, during this time, the upper sheet reversing means 4
The second sheet 102 is stored in the sheet path 12 in the upper reversing buckle 82A, and the sheet detector 24 is turned on. In conjunction with this, the stopper rotary solenoid 34 is turned on, and the upper movable stopper 88A is turned on by the second movable stopper 88A. The paper 102 is pushed downward.

Next, when the fourth sheet 106 is conveyed, FIG.
As shown in (B), the path switching rotary solenoid 5
8 turns ON, and the fourth sheet 106 is guided to the upper sheet reversing means 4. The first paper 100 is the downstream transport surface 10
B is completely carried out (not shown), and the second sheet 102 is carried out via the upper carry-out passage 66 so as to follow thereafter.
During this time, the third paper 104 is stored in the paper passage 12 in the lower reversing buckle 82 of the lower paper reversing means 6, and the paper detector 24 and the stopper rotary solenoid 34 are turned on.
, And the third sheet 104 is flipped up and held by the lower first and lower third rollers 84 and 90.

According to the sheet reversing device 2, even while the sheet is being carried into one of the upper and lower sheet reversing means 4, 6, the sheet is carried into the other reversing buckle. Therefore, the number of sheets to be reversed within a certain time can be greatly increased as compared with the conventional sheet reversing device.

Also, since the structure is such that the processing amount is increased without increasing the paper loading / unloading speed in the paper reversing means,
There is no increase in paper jams and paper breaks.

In the upper sheet reversing means 4 of the sheet reversing device 2, at least a part of the outer wall of the paper path 12 (the inner side surfaces of the pair of parallel plates 13) is provided with a means for generating resistance to the advance of the sheet, It is preferable to dispose a convex sheet, a rubber sheet, and a sheet holding projection. This way,
It is possible to prevent the paper from naturally falling when the paper is carried in the vertically upward direction, and it is possible to reduce paper jams, paper breaks, and the like.

Next, a paper reversing device 2A according to a second example of the embodiment will be described.

As shown in FIG. 6, the sheet reversing device 2A is different from the sheet reversing device 2 according to the first embodiment of the present invention in that the lower first roller 84 and the upper first roller 84 are provided.
A is arranged so as to be able to pinch and convey the sheet, and the branching portion 8 is configured to enter the lower first and lower second rollers 84 and 86 in the inward direction, the upper first and second rollers 84 and 86. Upper second
In addition to the entry side of the rollers 84A and 86A, the lower first
The paper traveling direction can also be switched in the entry direction of the upper first rollers 84 and 84A.

Further, the outlet 9 is provided in addition to the sheet discharged from the lower first and lower third rollers 84 and 90 and the sheet discharged from the upper first and upper third rollers 84A and 90A. The lower first and upper first rollers 84,
The paper conveyed from 84A is also configured to be reachable.

The lower first and upper first rollers 84, 8
4A rotates in the direction of arrow A when the paper is guided by the upper and lower paper reversing means 4 and 6,
When the paper is guided to the lower first and upper first rollers 84 and 84A entrance sides, the control means 98 is set to rotate in the opposite direction, and the paper is fed to the outlet 9.
It can be transported to Since other detailed configurations are almost the same as those of the sheet reversing device 2 according to the first example of the embodiment, the same parts as those of the sheet reversing device 2 are denoted by the same reference numerals, and description thereof is omitted. .

When the rotary solenoid 58 is turned off, the lower fixed plate 62 is moved in parallel with the lower path surface 48D, which is the lower surface of the switching plate 48, as shown by the two-dot chain line in FIG. By providing the lower sheet introduction passage 64, the switching plate 4 may be formed when the rotary solenoid 58 is ON.
The upper paper introduction passage 64A may be configured by providing the upper fixing plate 62A in parallel with the upper path surface 48C that is the upper surface of the upper sheet 8. Further, as shown in FIG. 6, the rotary solenoid 58 is shown as being capable of switching between three positions. However, a step motor or the like is used instead of the rotary solenoid 58, and the three positions are controlled by controlling the step motor. It is also preferable to be able to switch. This eliminates the need to provide the tension spring 60 and the spring hook 59 shown in FIG.
The structure of the branch portion 8 can be simplified.

According to the sheet reversing device 2A, when the sheet is not reversed, the lower first and upper first rollers 8 are used.
Since the paper may be transported horizontally by 4, 84A, it is not necessary to change the line of the enclosing / sealing system one by one. The present invention is not limited to the sheet reversing device 2A in which the lower first and upper first rollers 84 and 84A cooperate to pinch and convey the sheet. For example, as in a sheet reversing device 2B shown in FIG. 7, a pair of transport rollers 74, 74A may be separately provided between the lower first and upper first rollers 84, 84A.

Sheet reversing devices 2 and 2 according to the embodiment
In A and 2B, the path switching rotary solenoid 5
8, the branch portion 8 constituted by the switching plate 48 and the like is specifically shown, but the sheet reversing device according to the present invention is not limited to this. For example, as schematically shown in FIG. 8A, the path is switched using an air cylinder 77 or the like by a switching flap 76 in which the upstream end in the transport direction is swingably supported. As shown in B), the upper paper guide passage 78A which is continuous with the upstream transport surface 10A and guides the paper to the upper paper reversing means, and which is also continuous with the upstream transport surface 10A and which is connected to the lower paper reversing means. A lower paper guide passage 78B for guiding the paper is fixedly arranged, and a path switching flap 76 may be provided at this branch point.

The arrangement of the upper and lower sheet reversing means is as follows.
Paper reversing device 2, 2A, 2B shown in the example of the embodiment
However, the present invention is not limited to this, and includes a case where the reversing buckle is arranged obliquely as shown in FIG.

Further, in the lower and upper sheet reversing means 4, 6, the lower first and upper first rollers 84, 84A are
A case is shown in which a carry-in roller pair is formed in cooperation with the lower and upper second rollers 86 and 86A, respectively, and a carry-out roller pair is formed in cooperation with the lower and upper third rollers 90 and 90A. However, the present invention is not limited to this, as long as it has at least a carry-in roller pair and a carry-out roller pair, and the carry-in roller pair and the carry-out roller pair are independently constituted by separate rollers. You may make it.

As described above, the sheet reversing device according to the present invention has been specifically shown through the sheet reversing devices 2, 2A and 2B according to the example of the embodiment. Modifications, combinations, and the like are included in the present invention.

[0048]

According to the present invention, a large amount of paper can be reversed in a short time without increasing the paper loading / unloading speed in the paper reversing means.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view illustrating a sheet reversing device according to a first example of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a time chart showing the operation of the sheet reversing device.

FIG. 4 is a schematic diagram showing a step of a sheet reversing operation of the sheet reversing device.

FIG. 5 is a schematic diagram illustrating a sheet reversing operation state of the sheet reversing device in a stepwise manner.

FIG. 6 is a sectional view showing a sheet reversing device according to a second example of the embodiment of the present invention;

FIG. 7 is a sectional view showing another example of the sheet reversing device according to the embodiment of the present invention;

FIG. 8 is a conceptual diagram showing another example of the path switching means of the sheet reversing device according to the embodiment of the present invention.

FIG. 9 is a schematic diagram showing a paper processing operation in a conventional enclosing / sealing unit.

FIG. 10 is a schematic sectional view showing a conventional sheet reversing device.

11 is a view taken along the line XI-XI in FIG.

FIG. 12 is a schematic diagram showing a sheet reversing operation state of a conventional sheet reversing device.

[Explanation of symbols]

 2, 2A, 2B: sheet reversing device 4: upper sheet reversing means 6: lower sheet reversing means 8: branching section 9: outlet section 12: paper path 82: lower reversing buckle 82A: upper reversing buckle 84: lower first 1 roller 84A Upper first roller 86 Lower second roller 86A Upper second roller 88 Lower movable stopper 88A Upper movable stopper 90 Lower third roller 90A Upper third roller 98 Control means

Claims (4)

[Claims] 1. An upper sheet reversing means and a lower sheet reversing means which are respectively arranged at different height positions, carry in a sheet from the front end side in the conveying direction, and carry out the sheet from the rear end side. And disposed upstream of the lower sheet reversing means, the upper sheet reversing means direction, the lower sheet reversing means direction,
A branching section that can switch the direction of travel of the sheet, a sheet that is disposed downstream of the upper and lower sheet reversing means, and is carried out of the upper sheet reversing means, and a sheet that is carried out of the lower sheet reversing means. A sheet reversing device, comprising: an outlet portion through which both arrive. 2. A lower reversing buckle having a substantially vertical paper passage therein and having an opening at an upper end of the paper passage, and a portion near an upper portion of the opening of the lower reversing buckle and on an upstream side. And a lower carrying roller pair capable of carrying the paper into the lower reversing buckle through the opening, and disposed so as to be able to contact the leading end in the carrying direction of the paper carried into the lower reversing buckle, and A lower movable stopper capable of biasing the sheet in the reverse direction, and disposed near and above the opening of the lower reversing buckle, and capable of holding the biased sheet and discharging the sheet; A lower carry-out roller pair, an upper reversing buckle disposed above the lower reversing buckle, having a substantially vertical paper path therein, and having an opening at a lower end of the paper path; Near the buckle below the opening, and An upper carry-in roller pair that is arranged on the upstream side and that can carry the paper into the upper reversing buckle through the opening, and is disposed so as to be able to contact the leading end in the carrying direction of the paper carried into the upper reversing buckle, and An upper movable stopper capable of urging the sheet in a counter-inward direction, and an upper side disposed below and near the opening of the upper reversing buckle and downstream, and capable of holding the energized sheet and ejecting the sheet. A carry-out roller pair, and a branching portion that is arranged on the upstream side of the lower and upper carry-in roller pairs, and that can switch the paper advancing direction to the lower carry-roller-to-entry direction, the upper carry-roller-to-enter side, An outlet portion disposed downstream of the lower and upper discharge roller pairs to allow both the paper discharged from the lower discharge roller pair and the paper discharged from the upper discharge roller pair to reach. Sheet reversing device to. 3. The device according to claim 2, wherein the branching portion includes: a direction in which the lower carry-in roller enters, a direction in which the upper carry-in roller enters, a gap direction between the lower carry-in roller pair and the upper carry-in roller pair; The paper outlet direction is switchable, the outlet portion is a sheet carried out from the lower carry-out roller pair, a sheet carried out from the upper carry-out roller pair, the lower carry-in roller pair and the upper carry-in roller. A sheet reversing device, wherein a sheet conveyed through a gap between a pair reaches the pair. 4. A lower reversing buckle having a substantially vertical paper passage therein and having an opening at an upper end of the paper passage, and a lower reversing buckle disposed in the vicinity of the opening of the lower reversing buckle. A lower roller, which is disposed downstream of the lower first roller and upstream of the lower first roller and cooperates with the lower first roller to pinch the sheet and to carry the sheet into the lower reversing buckle; A roller, a lower movable stopper disposed so as to be able to abut on a leading end in a carrying direction of the paper carried in the lower reversing buckle, and capable of urging the paper in a reverse carrying direction; and the lower first roller. And a lower third roller capable of pinching and discharging the biased sheet in cooperation with the lower first roller, and being disposed above the lower reversing buckle. The paper passage has a substantially vertical paper passage, and an opening is provided at the lower end of the paper passage. An upper reversing buckle, an upper reversing buckle that is disposed near the opening below the upper reversing buckle and above the lower first roller and cooperates with the lower first roller to pinch and transport a sheet. An upper second roller that is disposed upstream of the upper first roller and that pinches a sheet in cooperation with the upper first roller and that can carry the sheet into the upper reversing buckle; An upper movable stopper which is disposed so as to be able to contact the leading end of the paper conveyed into the upper reversing buckle in the carrying direction, and which is capable of urging the paper in the reverse carrying direction; An upper third roller capable of pinching and discharging the biased sheet in cooperation with the upper first roller; and an upper third roller disposed upstream of the lower first and upper first rollers;
Switching of the paper advancing direction to the entry side direction of the lower first and upper first rollers, the entry side direction of the lower first and lower second rollers, and the entry side direction of the upper first and upper second rollers. A possible branching portion, disposed downstream of the lower first and upper first rollers,
A sheet carried out from the lower first and upper first rollers,
Paper carried out from the lower first and lower third rollers,
Paper carried out from the upper first and upper third rollers,
And the rotation of the lower first and upper first rollers. When the paper advances in the direction of the entrance of the lower first and upper first rollers, the lower first and upper rollers are rotated. Control means for controlling the direction in which the sheet advances in the entry direction of the lower second roller and in the entry direction of the upper first and upper second rollers. Reversing device.