JPH07101615A - Stacker device for discharged paper sheet - Google Patents

Abstract

PURPOSE:To provide a discharged paper sheet stacker device capable of classifying fed sheets, and stacking the sheets in a state where the side edge parts, the front edge and the rear edge of a bundle of sheets are completely registered. CONSTITUTION:A discharged paper sheet tray 11 is moved in the direction (direction of the arrow mark B) perpendicular to the direction of paper feeding at each time the sheets equivalent to a set of documents are fed. A guide 19 is arranged on one end side of the discharged paper sheet tray 11 in the moving direction, and a guide 18a is arranged on the other end side. Further, a front edge locking plate 23 and a sheet rear edge registering plate 24 are arranged respectively in the front and the rear of the discharged paper sheet tray 11 in the direction of paper feeding. Since when the discharged paper sheet tray 11 is moved, a cam follower 25 provided at the sheet rear edge registering plate 24 is moved along the tip part of a cam plate 29 fixed to the device-body, the sheet rear edge registering plate 24 is once separated from the end part of a bundle of sheets placed on the discharged paper sheet tray 11, and then again abuts on the rear end of the bundle of the sheets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stacker device for stacking sheets fed from a plurality of sheet bundles in a predetermined order in a sorted state.

[0002]

2. Description of the Related Art Many copies of a plurality of pages of originals are copied, the copy sheets are sorted and sequentially aligned from the first page, and one copy (1
A collator is used when binding each set with a stapler and binding. In this collator, a plurality of paper feed shelves are arranged at appropriate intervals in the vertical direction. For example, a large number of copy sheets obtained by copying the first page of a document are placed on the uppermost paper feed shelves. The copy sheets of the second and subsequent pages of the original are sequentially set in the second and subsequent sheet feeding shelves. Then, when page alignment is started, the uppermost sheets of the copy sheets stacked on the respective paper feed shelves are sequentially taken out from the respective paper feed shelves and discharged onto the paper discharge tray via the paper discharge rollers. In this case, the copy sheets are regulated by the sheet side guide plates of the sheet aligning device (so-called jogger), fall onto the sheet discharge tray, and are stacked on the sheet discharge tray. Then, a sheet bundle composed of a plurality of copy sheets from the first page to the final page is first stacked in a state in which the first set of copy sheet bundles is eccentric to one side of the discharge tray. The set of copy sheet bundles is stacked in a state of being offset to the other side portion of the discharge tray by moving the discharge tray in a direction orthogonal to the feeding direction of the copy sheets. In this way, the copy sheets are alternately grouped and sorted on one side and the other side of the discharge tray for each set. The sorted and stacked copy sheet bundles are bound and stapled by a stapler in the next step.

However, in the conventional paper aligning device, it is difficult to align the edges of the sheet bundle because the discharge positions of the copy sheets are already slightly displaced when the copy sheets are discharged from the discharge rollers. Further, since the copy sheet is regulated by the guide plate and falls, when the copy sheet is displaced toward the guide plate side, the sheet discharge tray moves to the guide plate side, so that the copy sheet comes to the guide plate. Although the contact is made and the position thereof is corrected, when the copy sheet is displaced in the opposite direction, the position of the copy sheet cannot be corrected.

Therefore, the applicant of the present application has proposed a paper discharge stacker device capable of aligning the edges of a sheet bundle regardless of the direction in which the paper discharged from the paper discharge rollers is displaced (Japanese Patent Application No. 2- 95282).

FIG. 7 is a top view showing the above-described sheet discharge stacker device, and FIG. 8 is a front sectional view of the same. In addition, FIG.
10 is a top view showing the operation of the paper discharge stacker, and FIG. 11 is a schematic side sectional view showing a collator incorporating the paper discharge stacker device.

First, the collator will be described with reference to FIG. At the front of the collator body 2, the collator body 2
A plurality of (10 in the illustrated example) paper feed shelves 3 are vertically spaced apart from each other by an appropriate length so as to project from the front to the front. Inside the collator body 2, each paper feed shelf 3
A paper feed roller 4 is provided corresponding to each of the above. Due to the rotation of the sheet feeding roller 4, the uppermost sheet 1 is taken out from the bundle of sheets 1 placed on the sheet feeding shelf 3 and fed into the collator body 2. Inside the collator body 2, a conveyor belt 5 is arranged so that the conveyor direction is vertical. The conveyance belt 5 moves the sheet 1 vertically downward. A pair of paper discharge rollers 7 that rotate in opposite directions are provided in the lower portion of the collator body 2.
The sheet 1 conveyed downward by the conveyor belt 5 is fed toward the sheet discharge stacker device 10 arranged outside the collator main body 2 by the pair of sheet discharge rollers 7.

A paper discharge stacker device 10 is disposed in front of the paper discharge roller 7 in the feeding direction of the copy sheet 1. In this paper discharge stacker device 10, the sheet 1
A paper discharge tray 11 that is inclined so as to slightly descend toward the front in the sheet feeding direction is provided. This paper output tray 11
Is reciprocated through a roller 12 so that it can reciprocate in a direction orthogonal to the feeding direction of the copy sheet 1 shown by arrow A in FIG. 7 (also shown by arrow B in FIG. 7). It is supported by a base 20 of the apparatus body. A motor 13 is installed in the vicinity of the paper discharge tray 11, and the rotational force of the motor 13 is transmitted to the paper discharge tray 11 via a crank 14. As a result, when the motor 13 rotates forward and backward, the rotation of the motor 13 is converted into the reciprocating movement of the paper discharge tray 11 by the crank 14.

The paper discharge roller 7 is rotatably supported by the shaft 15. The rotary shaft 15 is a base 20 of the main body of the apparatus.
The pair of side plates 16 provided upright are arranged so that their axial directions are orthogonal to the feeding direction of the copy sheet 1.

The discharge tray 11 is located at one end (hereinafter referred to as a second end) side in the moving direction of the discharge tray 1.
A side edge guide 17 is fixed to the side plate 16 and installed in the vicinity of the rear end portion 1. Another side edge guide 18 is fixed to the apparatus main body on the side of the second end and near the center of the side edge of the paper discharge tray 11.

On the other hand, a pair of guides 19 are provided on the other end (hereinafter, referred to as the first end) side of the discharge tray 11 in the moving direction. The guide 19 is supported by a slide rail 21 provided on a base 20 so as to be slidable in the moving direction of the paper discharge tray 11 (direction of arrow B). The slide area of the guide 19 is cut out from the paper discharge tray 11, and the guide 19 projects upward from the paper discharge tray 11 through the notch.

A front edge guide 22 is provided at the front end of the sheet discharge tray 11 in the sheet feeding direction. A locking plate 23 is erected on the tip of the guide 22. The guide 22 slides with appropriate resistance with respect to the paper discharge tray 11, advances from the paper discharge tray 11 to the front side in the sheet feeding direction, or can be retracted into the paper discharge tray 11. It is supported by the paper discharge tray 11. Further, the guide 22 is inclined with respect to the direction of arrow A so as to move away from the second end (the guide 17 and the guide 18) toward the front in the copy sheet feeding direction (in FIG. 7,
(Shown by arrow C). Therefore, when the guide 22 advances forward along the direction of the arrow C, the locking plate 23 provided at the tip of the guide 22 moves to the second position of the paper discharge tray 11.
Move in a direction away from the side edge on the end side of. And
At the center of the locking plate 23, the paper discharge tray 11 is guided by the guide 19.
When it is deviated, that is, when it is deviated to the first end side, as shown in FIG. 9, it is closer to the first end side than the feeding center D of the copy sheet 1 (shown by a chain line in the figure). It is in. Further, when the paper discharge tray 11 is close to the guides 17 and 18, that is, is displaced to the second end side, the center of the locking plate 23 is the feeding center D of the copy sheet 1 as shown in FIG. Is located on the side of the second end.

Next, the operation of the paper discharge stacker device constructed as described above will be described. First, the positions of the guides 19 and 22 are adjusted according to the size of the copy sheet 1. That is, when the copy sheet 1 is large, such as the B4 plate, the guide 19 is moved away from the guides 17 and 18, and the locking plate 23 of the guide 22 is moved forward. As a result, the area surrounded by the guides 17, 18, 19, 22 has a width larger than the size of the B4 plate by at least the reciprocating movement distance of the discharge tray 11.

Thereafter, as shown in FIG. 9, for example, the sheet discharge tray 11 is moved to the first end side, for example, the sheet feeding center D.
15 mm more than that. Then, the center of the locking plate 23 of the leading edge guide 22 is located closer to the guide 19 than the feeding center D of the copy sheet 1, and is closer to the first end portion side.

On the other hand, in the collator, the uppermost copy sheet 1 is sequentially taken out by the paper feed roller 4 from the bundle of copy sheets 1 stacked on each paper feed shelf 3, and the copy sheet 1 is conveyed by the conveyor belt 5. From the paper ejection roller 7,
For example, they are sent out to the paper discharge stacker device 10 in page order.

The center of the locking plate 23 is the copy sheet 1.
Since it is displaced from the feeding center D of the sheet, the copy sheet 1 driven by the sheet discharging roller 7 and fed to the sheet discharging tray 11 is moved to the locking plate 23 by about 15 mm from the center thereof. Abutting at the position deviated to the end side of. For this reason,
An inertia moment generated by a collision with the locking plate 23 acts on the copy sheet 1, and as shown by the solid line in FIG.
The copy sheet 1 rotates slightly clockwise, and its rear end is located near the guide 17. The copy sheet 1 is slightly inclined with respect to the feeding direction A in this way, and the discharge tray 11
It is dropped and placed on top.

After the copy sheets 1 for all pages are fed from the collator and a bundle of copy sheets 1 corresponding to one copy of the original document is stacked on the discharge tray 11 in the same posture, the motor 1 is used.
By the rotation of 3, the paper discharge tray 11 moves in the direction of the arrow B, and as shown in FIG. 10, it is located on the second end side, for example, displaced from the feeding center D by about 15 mm. Since the rear end portion of the bundle of copy sheets 1 is displaced and inclined toward the guides 17 and 18, during this movement,
The rear edge side of the bundle of copy sheets 1 contacts the guides 17 and 18, and the posture of the bundle of copy sheets 1 is corrected by the guides 17 and 18. Therefore, when this movement is completed,
As shown by the broken line in FIG. 9, the longitudinal direction of the copy sheet 1 exactly coincides with its feeding direction, and its position is the second position.
The sheet is stacked on the sheet discharge tray 11 in a state of being deviated to the end side, that is, the guides 17 and 18 side.

After the sheet discharge tray 11 is stopped at the position shown in FIG. 10, the locking plate 23 of the leading edge guide 22 has its center at the guides 17, 18 rather than the feeding center D of the copy sheet 1.
It is located on the second end side of the side.

Next, the uppermost copy sheet 1 of each bundle of copy sheets 1 stacked on the paper feed shelf 3 is sequentially taken out by the paper feed roller 4 from the collator, and the next set of copy sheets 1 is conveyed. Is conveyed by the paper ejection roller 7,
The pages are continuously sent out to the discharge stacker device 10 in page order.

In this case, the copy sheet 1 is brought into contact with the locking plate 23 at a position displaced from the center thereof by about 15 mm toward the first end side. Therefore, the moment of inertia acts on the copy sheet 1 due to the collision with the locking plate 23, and the copy sheet 1 slightly rotates counterclockwise as shown by the solid line in FIG. The parts are stacked near the guide 19. The copy sheet 1 is dropped and placed on the paper discharge tray 11 in a state in which it is slightly inclined with respect to the feeding direction A as described above.

Thereafter, the copy sheets 1 are taken out one by one from all the paper feed shelves 3 and fed to the paper discharge tray 11, and then the paper discharge tray 11 has a first end portion (as shown in FIG. 9). Move to the guide 19) side. As a result, the rear end portion of the bundle of copy sheets 1 contacts the guide 19 and the side edge of the guide sheet 1 is guided.
Aligned along 9, the stack of copy sheets 1 is straightened parallel to its feed direction.

After that, by repeating the same operation,
As shown in FIG. 8, the stack 30 of the copy sheets 1 is alternately displaced to the second end side and displaced to the first end side, and the stack 30 is alternately repeated. It will be placed on top. The sheet bundle 30 thus page-aligned and sorted is stacked on the discharge tray 11 with its side edges and front edges aligned. Then, in a bookbinding process, the sheet bundle 30 is bound with a stapler.

[0022]

However, in the above-described sheet discharge stacker device, the side edge of the sheet bundle 30 contacts the guides 17, 18 or 19 each time the sheet discharge tray 11 moves in the direction of arrow B. Due to the contact, the side edges of the sheet bundle are sufficiently aligned, but the front edge of the sheet is only brought into contact with the locking plate 23 when the sheet is sent out from the discharge roller, and thus the sheet is aligned. There is a drawback that the alignment in the front-rear direction (sheet feeding direction) is not sufficient.

The present invention has been made in view of the above problems, and sheets to be fed can be stacked with their widthwise edges and lengthwise edges being neatly aligned. It is an object to provide a paper discharge stacker device.

[0024]

A sheet ejection stacker device according to the present invention is a sheet ejection stacker device for stacking sheets sequentially fed from a plurality of sheet bundles in a sorted state, and a sheet receiving member for receiving the sheets. A sheet receiving member supporting means for movably supporting the sheet receiving member in a predetermined direction intersecting the sheet feeding direction, and first and second end portions of the sheet receiving member in the predetermined direction. A sheet receiving member moving means for reciprocating between them, a pair of sheet side edge guide members respectively arranged at the first and second end portions, and a front side of the sheet receiving member in the sheet feeding direction. And a sheet front edge locking member that locks a front edge of the sheet that is fed and is fed to the sheet, and the sheet receiver that is disposed at a rear portion of the sheet receiving member in the sheet feeding direction. A sheet trailing edge aligning member that reciprocates in a direction intersecting with the moving direction of the sheet along with the movement of the sheet and contacts the trailing edge of the sheet bundle on the sheet receiving member to align the trailing edge of the sheet bundle; It is characterized by having.

[0025]

In the present invention, first, the sheet receiving member is arranged, for example, on the first end side, and the fed sheets are stacked on the sheet receiving member while being displaced to the second end side. To be done. When one set of sheets is stacked on the sheet receiving member, the sheet receiving member is driven by the sheet receiving member moving means and moves to the second end side. This movement of the sheet receiving member causes the second bundle of sheets on the sheet receiving member to move to the second position.
The edge portion of the sheet comes into contact with the sheet edge guide member to align the second edge portion of the sheet bundle. Further, with the movement of the sheet receiving member, the sheet trailing edge aligning member reciprocates in a direction intersecting the moving direction of the sheet receiving member, and the trailing edge of the sheet bundle stacked on the sheet receiving member. Abut. Since the leading edge of the sheet bundle is locked by the sheet leading edge locking member, the sheet bundle is sandwiched between the leading edge locking member and the trailing edge aligning member by the contact of the sheet trailing edge alignment member, The leading and trailing edges of the.

On the other hand, the next set of sheets falls onto the sheet receiving member located on the second end side. This sheet contacts the sheet leading edge locking member and is stacked on the sheet receiving member while being displaced toward the first end side in the opposite direction to the copy sheets of the previous set. Then, when all the sheets of the set are stacked on the sheet receiving member, the sheet receiving member moves to the first end side. As a result, the sheet bundle deviated to the first end portion side comes into contact with the sheet side edge guide member arranged on the first end portion side, and the first end portion side edge portion of the sheet bundle. Are aligned. Also at this time, as the sheet receiving member moves, the sheet trailing edge aligning member reciprocates in the direction intersecting the moving direction of the sheet receiving member, and the trailing edge of the stack of sheets stacked on the sheet receiving member. Abut.
In this way, each time the sheet receiving member moves, the sheet trailing edge aligning member abuts the trailing edge of the sheet bundle and aligns the leading edge and the trailing edge of the sheet bundle. Can be aligned with.

For example, when the sheet receiving member is located at the first end portion, the sheet front edge locking member is located closer to the first end portion than the sheet feeding center,
When the sheet receiving member is located at the second end,
It is preferable that the sheet front edge locking member is located closer to the second end than the sheet feeding center. As a result, a moment of inertia is generated when the sheet is sent onto the sheet receiving member and collides with the sheet front edge locking member, and when the sheet receiving member is located at the first end portion, the sheet trailing edge is moved to the second edge. Move to the end side of the
The trailing edge of the sheet moves toward the first end portion when the sheet is located at the end portion of. Therefore, when the sheet receiving member moves, the sheet side edge surely contacts the sheet side edge guide plate, and the sheet side edge can be surely aligned. Further, when handling sheets of various sizes, the positions of the sheet side edge guide member and the sheet front edge locking member on the first end side can be adjusted. This makes it possible to accommodate sheets of various sizes.

[0028]

Embodiments of the present invention will now be described with reference to the accompanying drawings.

FIG. 1 is a top view showing a paper discharge stacker device according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a perspective view showing a paper discharge tray thereof. Is. FIG. 5 is a bottom view showing the sheet trailing edge aligning plate provided on the paper discharge tray. The present embodiment is different from the conventional one in that a sheet trailing edge aligning plate is provided at the rear end portion of the discharge tray in the sheet feeding direction, and other configurations are basically the same as the conventional one. Therefore, in FIGS. 1 to 5, the same components as those in FIGS. 7 to 10 are designated by the same reference numerals, and detailed description thereof will be omitted.

The paper discharge stacker device according to this embodiment is used by being incorporated in the collator shown in FIG. 11, for example. This collator is provided with, for example, 10 sheet feeding shelves 3, and the topmost sheet of the sheet bundle of each sheet feeding shelf 3 is sequentially sent out at a predetermined timing, and is conveyed downward by a conveyor belt 5 to form a pair. The sheet is discharged to the sheet discharge stacker device 10 according to the present exemplary embodiment via the sheet discharge roller 7. In this case, after the sheet is sent out from the uppermost sheet feeding shelf 3, the sheet is sent out from the next sheet feeding shelf 3, so that the sheets are sequentially sent out from the upper sheet feeding shelf side.

In the discharge stacker device 10, the discharge tray 11 is reciprocated in the direction orthogonal to the sheet feeding direction, and is mounted on the base 20 of the main body of the device via the roller 12. It is supported. The paper discharge tray 11 is connected to a motor 13a via a crank rod 14a engaged with a rear end portion of the tray 11 in the sheet feeding direction. (Direction indicated by B). It should be noted that the motor 13a is adapted to be rotationally driven after the sheets are fed one by one from each of the paper feed shelves of the collator.

A leading edge guide 22 is provided at the front end of the sheet discharge tray 11 in the sheet feeding direction, as in the conventional case, and a leading edge locking plate 23 is provided at the tip of this guide 22. It is erected. The guide 22 is slidable in a direction inclined with respect to the central axis of the paper discharge tray 11, and adjusts the position of the guide 22 depending on the size of the sheet. A side edge guide 18a is fixed to the side plate 16 of the apparatus main body at one end (second end) side in the moving direction of the paper discharge tray 11. Further, a cutout is provided on the other end (first end) side in the moving direction of the paper discharge tray 11, and a pair of guides 19 project upward through the cutout. The guide 19 is supported by a slide rail 21 provided on a base 20 so as to be slidable in the moving direction of the paper discharge tray 11.

Furthermore, at the trailing edge of the discharge tray 11,
An L-shaped sheet trailing edge aligning plate 24 is arranged. The horizontal portion 24b of the trailing edge aligning plate 24 is arranged on the lower surface side of the paper discharge tray 11, but as shown in FIG. 5, the horizontal portion 24b has an oval shape extending parallel to the sheet feeding direction. Slide holes 26 are provided. On the other hand, the paper ejection tray 11
Two bosses 27, which are arranged apart from each other and fit into the slide holes 26, are provided on the lower surface of the boss 2.
7, the trailing edge alignment plate 24 is supported by the paper discharge tray 11 in a state of being movable in a direction parallel to the sheet feeding direction. Further, spring attaching portions 31a are provided on both side edges of the horizontal portion 24b of the trailing edge aligning plate 24, and the trailing edge aligning plate 24 includes the spring attaching portions 31a and the discharge tray 1.
The coil spring 28 hung between the spring mounting portion 31b provided on the first sheet 1 and the spring mounting portion 31b always urges the sheet ejection tray 11 toward the front edge side.

Further, a cam follower 25 is arranged on the horizontal portion 24b of the trailing edge aligning plate 24. On the other hand, the base 2
At 0, a cam plate 29 whose tip is formed in a mountain shape is fixed. The cam follower 25 disposed on the trailing edge alignment plate 24 is in contact with the tip end portion of the cam plate 29 by the biasing force of the coil spring 28.

Next, the operation of the paper discharge stacker device configured as described above will be described. First, the positions of the guide 19 and the guide 23 are adjusted according to the size of the sheet. That is, the region surrounded by the guides 18a, 19, 22 and the vertical portion 24a of the trailing edge alignment plate 24 has a width larger than the size of the sheet by at least the reciprocating movement distance of the discharge tray 11.

After that, the collator and the discharge stacker device are operated. In the initial state, the paper discharge tray 11 is arranged at one end side in the moving direction (for example, the first end portion near the guide 18a). Therefore, the sheets sequentially sent out from the respective paper feed shelves of the collator are stacked in a state of being deviated to the second end portion side on the paper discharge tray 11. Manuscript 1 from collator
When sheets corresponding to one set (one set) are fed and these sheets are stacked on the discharge tray 11, next, the motor 13a rotates and the discharge tray 11 moves in the direction of arrow B ( In the direction toward the second end). At this time, the cam follower 25 provided on the trailing edge aligning plate 24 moves along the tip of the cam plate 29, so that the trailing edge aligning plate 24 resists the biasing force of the coil spring 28 and moves in the longitudinal direction of the slide hole 26. Move along. That is, the vertical portion 24a of the trailing edge alignment plate 24
When the output tray 11 starts to move, the output tray 1
1 is moved in a direction orthogonal to the moving direction of the sheet 1, and is temporarily separated from the trailing edge of the bundle of sheets on the discharge tray 11, and the cam follower 25 passes through the tip apex of the cam plate 28. Due to the force, it again contacts the trailing edge of the sheet bundle. Since the leading edge of the sheet bundle is locked by the leading edge locking plate 23, the trailing edge aligning plate 24 abuts the trailing edge of the sheet bundle, so that the sheet bundle moves to the leading edge locking plate 23 and the trailing edge aligning plate. Two
4 and the front edge and the rear edge of the sheet bundle are aligned.
In addition, by moving the discharge tray 11 to the second end side,
The side edge on the second end side of the sheet bundle comes into contact with the guide 18a, and the side edges of the sheet bundle are aligned.

Next, after the paper discharge tray 11 is arranged at the second end, the uppermost sheet of each bundle of sheets stacked on the paper feed shelf from the collator is likewise sequentially sent out by the paper feed rollers. The next set of sheets 1 is conveyed by the conveyance belt 5 and is continuously sent out from the pair of paper ejection rollers 7 to the paper ejection stacker device 10 in page order. Since the discharge tray 11 is arranged at the second end, the sheets of the next set are stacked in a state of being displaced to the side of the first end on the discharge tray 11, and the sheets of the previous set are stacked. Sorted with sheets. And
When the sheets corresponding to one copy of the document are stacked, the motor 13a rotates and the paper discharge tray 11 moves to the first end side (that is, the guide 19 side). This makes seat 1
The side ends of the stack of abut on the guide 19 and their side edges are aligned along the guide 19. The cam follower 25 moves along the leading end of the cam plate 28 as the paper discharge tray 11 moves, and the vertical portion 24a of the trailing edge aligning plate 24 once separates from the trailing edge of the sheet bundle, and then again the sheet bundle. Abut the trailing edge. As a result, the front edge and the rear edge of the sheet bundle are aligned.

In this way, in the paper discharge stacker device according to the present embodiment, the paper discharge tray 11 moves in the direction orthogonal to the sheet feeding direction for each cycle of discharging one set of sheets, and Since the trailing edge alignment plate abuts the trailing edge of the stack of sheets, the sheet bundle is well aligned not only on its side edges but also on the leading and trailing edges. Therefore, there is an effect that the bookbinding work in the next bookbinding process becomes easy.

The shape of the tip of the cam plate is, for example, as shown in FIG.
As shown in, the center of the tip may be dented. In this case, the vertical portion 24a of the trailing edge alignment plate 24 is not in contact with the bundle of sheets when the sheets are discharged to the discharge tray 11, and during the movement of the discharge tray 11,
The vertical portion 24a of the trailing edge alignment plate 2 contacts the trailing edge of the sheet bundle, and then the vertical portion 24a of the trailing edge alignment plate 24 separates from the sheet bundle again. Also in this case, the sheet bundle can be aligned in both the width direction and the length direction as in the above-described embodiment.

[0040]

As described above, in the present invention,
By the reciprocating motion of the sheet receiving member, the fed sheets are stacked in a sorted state, the side edge guide member aligns the side edges of the stack of sheets stacked on the sheet receiving member, and With the movement of the sheet receiving member, the sheet trailing edge aligning member reciprocates and abuts the trailing edge of the sheet bundle, so not only the side edge of the sheet bundle sorted on the sheet receiving member, There is an effect that the leading edge and the trailing edge can be sufficiently aligned.

[Brief description of drawings]

FIG. 1 is a top view showing a paper discharge stacker device according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view showing the paper discharge tray.

FIG. 5 is a bottom view showing a sheet trailing edge trailing edge aligning plate provided on a sheet discharge tray.

FIG. 6 is a schematic plan view showing a cam plate.

FIG. 7 is a top view showing a conventional paper discharge stacker device.

FIG. 8 is a front sectional view of the same.

FIG. 9 is a top view showing the operation of the paper ejection stacker device.

FIG. 10 is a top view showing the operation of the paper ejection stacker device.

FIG. 11 is a schematic side cross-sectional view showing a collator in which a paper discharge stacker device is incorporated.

[Explanation of symbols]

 1; Sheet 2; Collator Main Body 3; Paper Feed Shelf 4; Paper Feed Roller 5; Conveyor Belt 7; Paper Ejection Roller 10; Paper Ejection Stacker Device 11; Paper Ejection Tray 16; Side Plates 17, 18; Side Edge Guides 19; Guides 20: Base 22: Leading edge guide 23: Locking plate 24: Seat trailing edge aligning plate 25: Cam follower 26; Slide hole 27; Boss 28; Coil spring 29; Cam plate 30; Sheet bundle

Claims (3)

[Claims] 1. A sheet receiving stacker device for stacking sheets sequentially fed from a plurality of sheet bundles in a sorted state, and a sheet receiving member for receiving the sheet, and the sheet receiving member in the sheet feeding direction. Sheet receiving member supporting means for movably supporting in a predetermined intersecting direction; sheet receiving member moving means for reciprocating the sheet receiving member between first and second end portions in the predetermined direction; A pair of sheet side edge guide members respectively arranged on the first and second end sides, and a front edge of the sheet which is arranged and arranged at a front portion of the sheet receiving member in the sheet feeding direction. And a sheet front edge locking member that locks the sheet receiving member and a sheet receiving member that is disposed at a rear portion of the sheet receiving member in the sheet feeding direction and moves in a direction intersecting the moving direction of the sheet receiving member as the sheet receiving member moves. A sheet trailing edge aligning member that moves backward and contacts the trailing edge of the sheet bundle on the sheet receiving member to align the trailing edge of the sheet bundle. 2. When the sheet receiving member is located at the first end, the center of the sheet front edge locking member is located closer to the first end than the sheet feeding center is,
When the sheet receiving member is located at the second end, the center of the sheet front edge locking member is located closer to the second end than the sheet feeding center. The sheet discharge stacker device according to Item 1. 3. The sheet side edge guide member and the sheet front edge locking member on the side of the first end can be adjusted in their arrangement positions according to the size of the sheet. The paper discharge stacker device according to claim 1.