JPS602566A - Sheet stacking device - Google Patents

Abstract

PURPOSE:To control the position of sheets to be stacked and to improve alignment of the sheets, by a method wherein a tray is varied in inclination with the size of the sheet. CONSTITUTION:In case reproduction after anchorage is an ordinary single-sided reproduction, a flap 48 is present in a position shown by a solid line, and is discharged on a first tray 51 with the aid of a pair of convey rollers 49 and 50. In the case of double-sided reproduction, the required number of sheets, in which reproduction is made on only the surface of the sheet, are contained on a second tray 52, which is positioned right below the second tray 51 and is for temporary storage, through rotation of the flap 48 to a position shown by a 2-dotted chain line. In which case, when, according to the size of the sheet to be conveyed, the second tray 52 is inclined till a proper slanted angle is formed, a guide plate colliding guide matching the size of a sheet is moved onto the second tray 52 to control and protect the forward end and both sides of the sheet.

Description

[Detailed description of the invention] The present invention relates to a sheet storage device.

In other words, multiple sheets can be stored one by one in a tray.
In a machine that processes sheets, aligning the sheets is of great significance for the next stage of sheet handling. For example, if the stacked sheets are scattered, it will be very difficult to align them due to static electricity and friction, and even when sorting or distributing the sheets, it is better to keep them properly aligned. A good thing is especially important in a device that automatically separates and conveys sheets stored in a tray one by one; if the sheets are poorly aligned, they may not be able to be conveyed after being separated or may be skewed. There are many cases where the skin becomes wrinkled.

In addition, compared to stacking sheets with the tray horizontal, it is better to stack sheets with an incline because the sheet will fall to the specified position due to the falling property of the sheet, so the tip of the tray in the falling direction The arrangement is very good.

This is particularly important in the aforementioned device that separates and conveys sheets; if the sheets are not lined up properly in the conveyance direction, the separation function cannot be fully achieved, so the tray must be tilted. It is better to accumulate sheets.

Furthermore, when sheets of different sizes are dropped at the same tray inclination angle, the larger size sheets are less likely to fall.

For this reason, it is necessary to take a larger inclination angle for large-sized sheets than for small-sized sheets, and it is desirable to be able to change the inclination angle of the tray according to the sheet size in order to stack and align the sheets. .

As mentioned above, when stacking sheets on the J-Ray, it is very important to align the sheets properly and to give the tray an inclination, especially to give it an inclination angle according to the size. I can understand something.

The present invention focuses on this point, and depending on the size of the sheet, -c,
This sheet tray device is characterized in that by changing the inclination of the tray, the position of the stacked sheets is simultaneously regulated and the alignment of the sheets is improved.

That is, in a device that stacks a plurality of sheets one by one on a tray, there is at least one position regulating member that regulates the position of the sheets, which guides the sheets to be stacked and Align the guide to the position on the tray. In addition, by changing the inclination of the tray according to the size of the sheet, the °C1 position regulating section moves to the storage r placement that matches the size of the notebook at the same time as changing the inclination of the tray. can do.

In other words, the present invention relates to a temporary storage place for sheets in a machine such as a copying machine, a printing machine, a recording machine, etc., which is equipped with a device for conveying and accumulating sheets. The present invention is applied to a position regulating member that regulates the position of a sheet, which uses a means for tilting a tray in order to change the position according to the size of the sheet. In other words, change the inclination angle of the tray.
This invention is applied to a device in which a position regulating member (hereinafter referred to as an F guide plate) moves its position according to the size of a sheet.

Furthermore, by changing the inclination of the tray according to the sheet size, the position regulating member simultaneously exposes a shape on the tray surface that can regulate the storage position according to the sheet size. can be done. In other words, according to the present invention, when the inclination angle of the tray is changed according to the size of the sheets, the position regulating member that regulates the storage position of the sheets placed on the tray can be adjusted according to the size of each sheet. This device is characterized in that a guide surface for use can be formed on the surface of the tray.

- Generally speaking, in a tray in which sheets are stored, the sheets are aligned using a guide plate, so that the sheets are arranged regularly and the sheets are prevented from being skewed during the next re-conveyance. In addition, the tray will hold the sheet until the next re-transport.
It is meant to be stored once, but it is installed at a certain inclination angle so that it can be easily transported again. To this end, the sheet falls at its set inclination angle to the next reconveying position.

The extent of this falling differs depending on the size of the sheet; larger sheets have a wider contact area and are therefore less likely to fall.

Therefore, the larger the size, the larger the inclination angle needs to be. The present invention focuses on this, and the larger the inclination angle of the tray, the thicker the sheet size. The positions of the guide surfaces of the guide member and the regulating member are set so that the In this way, a sheet conveying device that requires a sheet collecting tray to be provided with a guide plate and a regulating member guide ij that regulates and secures the leading edge and both sides according to the size of the sheet is used to re-transport the sheets collected on the tray. If the tray is inclined in order to achieve this, the present invention can be applied for the reasons mentioned above.

In the conventional example, in order to match the sheet size, three guide plates are provided to regulate the position of the conveyed sheet from the leading end side and both sides in the direction of movement. As shown in Figure 1, assuming that the two guard plates on the leading edge and on one side of the sheet are movable, a total of two gear heads are installed, one on each side of the tray, on two adjacent sides of the tray. There was a method in which a guide plate with a motor was installed, and the two guide plates were moved in the X and Y axis directions by rotation of the motor with a gear head.

In this method, the sheet 2 conveyed from the paper ejection roller 1 moves between the reference fixed guide 3 on the tray and the guide maple 6, hits the abutment guide plate 7, and then is stacked and aligned. be done. At this time, the guide plate 6 and the abutment guide plate 7 are moved by a necessary amount according to the size of the notebook being conveyed to regulate the sheet.

Each of the guide plates 6, 7 is moved by converting the amount of rotation of the gear head motors 4a, 4b into linear momentum via the ball screw shafts 5a, 5b of the respective motors 4a, 4b. This method uses two motors 4
Since the device has drive sources a and 4b, the device becomes large-scale, and from a mechanical point of view, the device as a whole becomes complicated.

Also, regarding the feeding of notes during re-transport, it is easier for the sheets to fall if the tray is tilted, but with this method, the device that collects and aligns the sheets is thick, so it is not necessary to tilt the tray. This also requires large-scale equipment.

Next, FIG. 2 does not show a conventional example where it is necessary to avoid tilting the tray in consideration of reconveyance.

The reference fixed guide 10 and the guide plate 1 on the tray 13'' are conveyed from the Jl, lth J gora 8.
1 and the abutting guide plate 1 on the tray 13.
2 and then collected and aligned on the tray 13.

At this time, the guide plate 11 and the abutting guide plate 12 are
Manually, depending on the size of the sheet 9 that is transported AL,
Adjust its position. 'c, the substrate q and the fixed guide 10 on the tray 13 are fixed, and the guide plate 11 and the abutting guide plate 12 on the tray 13-1 are fixed so that they can move in the Y and X axis directions, respectively. 11 and the abutting guide plate 12 are slidably fitted on the tray 13. In addition, a semicircular hole 14 is bored in the tray 13 to help the sheet fall during reconveyance, and a screw 16 protruding from the sheet conveyance body is inserted into the semicircular hole 14. and then operate the screws 16 to adjust and fix the inclination of the tray 13 so that the tray 13 has the most appropriate inclination.

At this time, the inclination of the tray 13 is fixed to one direction regardless of the size of the sheet. In this case, although it is mechanically simple, depending on the size of the sheet, the screw 16 is manually adjusted to change the inclination of the tray 13.
After fixing the tray 13 at a constant inclination angle, it is necessary to manually move the guide plate 11 and the abutment guide plate 12 in the X-axis and Y-axis directions for adjustment.

In addition, since the inclination of the tray 13 is fixed at one level, the way the -CI/-t falls varies depending on the size of the sheet, and the alignment of the sheets at the re-conveying position is not stable. do not.

As mentioned above, the conventional examples shown in FIGS. 1 and 2 have various drawbacks.

The present invention is a novel sheet tray device that has been improved in view of the drawbacks of the conventional example described above.The present invention eliminates the drawbacks of the conventional example, has a simple structure, and allows the degree of sheet fall to be adjusted appropriately depending on the size of the sheet. This has the advantage of being adjustable and at the same time determining the position of the guide surface of the guide plate and regulating member that matches the size of the sheet.

Furthermore, a drive device (motor,
It is also possible to automatically select the sheet size, change the inclination of the tray, and move the guide plate to the position of the sheet size by connecting a solenoid, etc.
It is also possible to change the position of the guide surface of the position regulating member to the size of the sheet.

A first embodiment of the invention is shown in FIGS.
What is shown in FIG. 3 is a side view of the sheet storage device, and the main components are a guide plate 17 and an abutting guide plate 18. The guide plate 17 and the abutting guide plate 18 are shown in FIG. As shown in FIG. Now, referring to FIGS. 3 and 5, the first embodiment of the present invention will be described. On the tray 19, a guide lever 17 is arranged parallel to the sheet traveling direction Z and perpendicular to the sheet traveling direction Z. An abutting guide plate 18 is provided, and both the guide plate 17 and the abutting guide plate 18 are L-shaped members, and are arranged in an inverted shape on the tray 19. 20 is an under plate fixed below the tray 19 and separately from the tray 19. Reference numeral 21 denotes a fixing column that fixes the pulley, and the interval is fixed by some method at the end of the under plate. A fixed lower pulley 22 is attached to this fixed column 21.

Two guide rods 23 are attached to the vertical sides of the abutting guide plate 18.
. The tips of the two guide rods 23 and 23 extend symmetrically through the concave notch 24 and protrude from the fixing member 25, respectively. Further, a fixed two-part booley 26 is provided upright in the recessed part 24 of the fixed member 25. One end of the wire 27 is fixed to the center of the vertical side of the abutting guide plate 18, and the wire 27
7 is wound around the fixed upper pulley 26 and the fixed lower pulley 22, and the other end is fixed to the lower surface near the tip of the tray 1. Pieces 28 and 28 are fitted into the two guide rods 23 and 23. A reference fixing plate 17' is erected on one side of the tray 19 so as to face the guide plate 17 at right angles to the abutment guide plate 18.

Also, the guide plate 17 has the same structure as the abutting guide plate 18, with a fixed column 21 and a fixed lower boo! l-22, "Two guide rods 23, 23, fixing member 25 with a recessed part 24 in the center
, fixed upper pulley 26, wire 27 and spring 28.2
8 is provided.

FIG. 4 is a diagram in which the first embodiment of the sheet storage device of the present invention is used in a copying machine.

In the figure, the image of the original placed on the original placing table 29 is illuminated by a halogen lamp 30 as a light source, and a mirror 31.
32, a lens 33, and a mirror 34 to form an image onto a drum 35 covered with optical semiconductors. The drum 35 is the charger 3
After the drum 35 is uniformly charged and an image is exposed on the drum 35, the developing device 37 transfers it to the drum 3 as a toner image.
It is visualized on 2.

Then, the visualized image is the register roller 3
8, the sheet is transferred onto the conveyed sheet by the transfer charger 39, and is transferred onto the drum 35 (
The remaining latent image and toner image are removed from the drum 35 by a lamp 40 and a cleaner 41 (7).

On the other hand, the sheet 42 is stored in a paper feed cassette 43, is sent out by a half-moon-shaped paper feed roller 44 and a register roller 38 in synchronization with the toner image on the drum 35, and is transferred by a transfer charger 39. After that, it is separated from the drum 35 by a separation roller 45, and is sent through a conveying section 46 to a fixing device 47 (for heat fixing). The solid line in FIG.

In the case of double-sided copying, the sheet on which only the front side (one side of both sides) has been copied is moved to the first position by rotating the flap 48 to the position shown by the two-dot chain line in FIG.
The required number of sheets are stored in a second tray 52 for temporary storage located directly below the tray 51.

At this time, if the second tray 52 is tilted at an appropriate inclination angle according to the size of the notebook being conveyed, the guide plate 17 and abutment guide 18 that match the size of the sheet will move to the tray of the flute 2. 52'' and secure the tip and both sides of the sheet.

Thereafter, the sheets are sequentially separated and ejected by a pair of counter-rotating rollers 53 and 54 that intersect with each other at appropriate timings.

The ejected sheet is conveyed by two pairs of width adjustment rollers 55 and 56 under the copying machine main body.
When feeding the sheet that has arrived to the register roller 38 (
2. In order to correct the skew of the sheet, it is first registered and brought into contact with the I-ra 38 to form a loop.

Once the loop is formed, the slip roller 57 (slips due to the resistance of the loop and spins idly).

After that, at a certain timing, the register roller 38
rotates, and the discharged sheet is conveyed by two pairs of width adjustment rollers 55 and 56 provided under the copying machine main body, and at the same time is fed into the copying machine main body by a width adjustment car. The copying machine main body (=; Before the sheet is folded in, it is temporarily stopped at the register roller 38 to form a loop. This is because the slip roller 57
When the sheet conveyed by 5 and 56 is sent to the register roller 3B, in order to correct the skew of the sheet, the sheet is once brought into contact with the register roller 38 to form a loop.

When the loop is formed, the slip roller 57 slips due to the resistance of the loop and rotates idly.

After sowing, at a certain timing, register roller 38
rotates and feeds the sheet into the drum 35.

The rest is the same as normal copying, and the sheets are finally collected on the first tray 51.

The details of the portion to which the present invention is applied in the conveyance path of this double-sided copy are shown in the perspective view of FIG.

The sheet 16' discharged from the conveying roller 17'' is placed on the tray 19 which is adjusted to an appropriate inclination angle. The guide plate 1 has moved on the upper surface of the tray 19 due to the tray 19 being tilted.
7. It is collected and aligned on the surface of the abutment guide 18 that matches the size of the sheet 16'. Below the tray 19, there is a wire 2 for moving the guide plate 17 and the abutment guide plate 18.
7 is fixed. Underplay 1.20 is Louis 1
It is fixed below the tray 9 separately from the tray 19 . Also,
On the opposite side of the guide plate 17 of the tray 19, there is a base thread fixing guide 17' that regulates the guide on the other side of the sheet 16'.
is provided.

The tray 19 is fixed to the copying machine body with a fulcrum pin 58,
It is designed to be able to rotate within a certain range around the fulcrum pin 58.

In order to fix the tray 19 at an appropriate inclination angle, there is a scale 59 engraved with the size of the sheet on the fulcrum pin 5s0. The angle is determined. Next to the scale 59, in order to fix the tray 19 at an appropriate angle, there is a semicircular round hole in the tray 19, and in the round hole,
The screw 60 that fixes the tray 19 is an extra edition. Screw 6
The head of the 0 is engraved with an arrow, which serves as a guide when aligning with the scale 59.

When the tray 19 is adjusted to the size of the sheet 16' and the scale 59 is manually tilted at an appropriate angle about the fulcrum pin 58, for example, when the tray 19 is tilted upward at a certain angle, the tray 19 The wire 27 with one end fixed to the lower surface of Ili moves forward in the Y direction using the fixed upper pulley 26 and the fixed lower pulley 22 as guides by half the height of the raised tray, so the guide rod 2
3.23 slides forward within the fixed member 25, so the abutting guide plate 18 advances in the Y direction and stops at an appropriate position, and in the same way, the guide plate 17 also advances in the X direction and reaches an appropriate position. The two sides of the sheet are regulated and protected by the guide plate 17 and the abutment guide plate 18.

As a second embodiment, FIG. 6 shows an example in which the rotational force of a motor is used to change the inclination of the tray instead of manually adjusting the tray's zero inclination.

In this example, as compared to a manual operation method, the sheet size selection is automatically detected and performed, so the operability is further improved.

Before the sheet 16' passes through the conveying rollers 17'', a sensor 61°6 detects the size of the sheet 16' in the width direction.
2 and sensors 63 and 64 that detect the length of the sheet 16' in the traveling direction. These sensors 61°62
．． As shown in FIG. 6, sensors 61, 62 are provided in the direction of arrow Z, and sensors 63, 64 are provided in the direction perpendicular to arrow Z, behind the conveying roller 17''.

Based on the signals from these sensors 61, 62, 63, 64, and from the time when the sheet 16' falls onto the tray 19, the tray 19 is placed near the rear of the pin 58, according to the size of the sheet +16'. It begins to tilt due to the drive of the DC motor 65. When the slope reaches the appropriate position,
The DC motor 65 stops, and the upper surface of the tray 19 is
The guide plate 17 and the abutting guide plate 18 move to positions matching the size of the sheets 16', and the sheets 16' are stacked and aligned along the guides. The tray 19 has a fulcrum pin 58
A DC motor with a gear head 67 rotating around the fulcrum pin 58 and meshing with a half-moon gear 66 next to the fulcrum pin 58.
As the motor 65 rotates, the tray 19 is rotated, that is, tilted. The positioning of the inclination of the tray 19 is achieved by the sensor plug 68 fixed to the tray 19 blocking light from concave light-shielding sensors 69, 70, 71 whose concave portions are engaged with the sensor plug 68. This is done by stopping the drive of 65. For example, if the slope of the tray 19 adapted to the size of Sea+16' is in the position shown in FIG.
If a light-shielding sensor 69 is provided at a location corresponding to that position, when the DC motor 65 rotates and tilts the l-ray 19, the sensor plug 68 fixed to the tray 19 will gradually move to the light-shielding sensor 69. Get close and block the light. At this time, the signal output from the light-shielding sensor 69 gives a command to the control unit that controls the drive of the DC motor 65, and the DC motor 65 stops at that point.

As a result, the tray 19 can always be stopped at a position with an inclination angle that matches the size of the sheet 16'.

Therefore, the positions of the guide plate 17 and the abutment guide plate 18 are determined by the inclination angle, so that the sheet 16' can be regulated and protected at a position that matches the size of the sheet 16'. L-shaped sensor plugs 68' and 68'' are protruded from the sensor plug 68 and engaged with the four parts of the light shielding sensor 70, 71.
The effect of 0.71 is the same as in the case of the light shielding sensor 69. Note that a pulse motor can be used in place of the DC motor 65 attached to the headgear 67 and the tip 17ii1i, but in that case, the rotation of the pulse motor is controlled by a balne shingetsu according to the required value of the seat size. Therefore, no light shielding device is required.

In this way, the positions of the guide plate 17 and the abutting guide plate 18 that match the sheet size are automatically set by simply changing the inclination of the I-lay 19, so no manual operation is required during the process, which prevents erroneous operation. There is no.

Furthermore, since there is no variation in the positions of the guide plate and the abutment guide plate, the sheet will not get caught on the way or run diagonally due to a gap.

The inclination of the tray can be changed depending on the size of the sheet, so the sheet can be dropped appropriately, and the instability of falling due to the size of the sheet (falling too fast and the leading edge of the paper folding or bouncing off) can be avoided. Never. Also,
On the contrary, it was too late and I was halfway there! E) will be resolved.

The main structure of the third embodiment of the present invention, as shown in FIG. ,C,
Vertical planes D, E, F, A', B', C', D',
There are horizontal planes E' and F', and a guide plate 72
The end guide plate 73 is shaped like a staircase. The vertical surfaces A, B, C, D, E, and F serve as guides for either the left or right side and the front side of the sheet. That is, when the tray changes its inclination angle depending on the size of the sheet, two vertical surfaces corresponding to the sheet size appear on the upper surface of the tray on the guide plate 72 and the abutting guide plate 73, and the front side and the front side of the sheet appear. It comes into contact with either the left or right side and acts as a guide. To explain with an example, when the sheet size is The two sides of the sheet touch the A side and the 0 side, and the A side and 0 side regulate and protect the notebook. Similarly, the sheet size is changed to y(bxe
), and Z(cXf), then Gai (,
゛.

The 8th side and 0th side of the guide plate 72, the 15th side of the abutting guide plate 73, p
A surface appears on the top of the tray to guide and regulate the two sides of the sheet. An embodiment using the second guide plate 72 and the abutment guide plate 73 is shown in FIGS. 8 and 9.

FIG. 8 is a diagram in which the third embodiment of the sheet storage device of the present invention is used in a copying machine.

At t6 in the figure, the raw material placed on the raw wire 6 mounting table 29' is shown.
The image of ffff1 is created by the halogen lamp 3 of light (I!j1.
0', mirrors 31', 32', lens 33'
, a drum 35 covered with optical semiconductors by mirrors 34'.
′ is imaged on. The drum 3q is uniformly charged by a charger 36', and after an image is exposed on the drum 35',
A toner image is formed by a developing device 37' and a C drum 32'.
It is visualized above.

Set-C1 The visualized image is the register roller 3
8', the transfer charger 39' transfers the image onto the conveyed sheet, and the drum 35
The latent image and toner image remaining on the lamp 40'
and removed from the drum 35' by the cleaner 41'.

On the other hand, the sheet 42' is stored in a paper feed cassette 43', and a half-moon-shaped paper feed roller 44' and a register roller 3
8', the toner image is removed from the toner image on the drum 35' and sent out, transferred by a transfer charger 39', separated from the drum 35' by a separation roller 45', and passed through a conveyance section 46'. The image is then sent to a fixing device 47' for heat fixing or the like.

For normal one-sided copying, use the flap 48' for copying after fixing.
are located at the solid line position in FIG. 4, and a pair of conveying rollers 49',
50' onto the first tray 51'.

In the case of double-sided copying, the sheet on which only the front side (one side of both sides) has been copied is moved to the first position by rotating the flap 48' to the position shown by the two-dot chain line in FIG. The required number of sheets is stored in a second tray 52' for temporary storage located directly below the tray 51'.

At this time, when the second tray 52' is tilted at an appropriate inclination angle according to the size of the sheet being conveyed, the guide plate 72' which matches the size of the sheet and the abutment guide 73 are moved to the second tray 52'. 'Moves over the top and regulates and protects the tip and both sides of the sheet.

Thereafter, at appropriate timing, the sheets are sequentially separated and discharged by a pair of opposing reversing rollers 53' and 54'.

The ejected sheet is corrected for skewing by two pairs of width adjustment rollers 55' and 56' provided under the copying machine main body when feeding the conveyed sheet to the register roller 38'. In order to
′ to form a loop.

When the loop is formed, the slip roller 57' slips due to the resistance of the loop and rotates idly.

After that, at a certain timing, the register roller 38
' rotates and the sheet is ejected. At the same time as it is conveyed, the sheet is aligned by two pairs of width alignment rollers 55' and 56' provided under the copying machine body, and then fed into the copying machine body. . Before being fed into the main body of the copying machine, the sheet is temporarily stopped by register rollers 38' to form a loop. When the slip roller 57' sends the sheet conveyed by the width adjustment roller 55156' to the register roller 38', the slip roller 57' once hits the register roller 38' in order to correct the skew of the sheet. to form a loop.

When the loop is formed, the slip roller 57' slips due to the resistance of the loop and rotates idly.

Thereafter, at appropriate timing, the register roller 38' rotates and feeds the sheet to the drum 35'. The rest is the same as normal copying, and the sheets are finally collected on the first tray 51'.

The details of the portion to which the third embodiment of the present invention is applied in this double-sided copy conveyance path are shown in the perspective view of FIG.

When the sheet 16' is discharged from the conveying roller 17'', the tray 19 is tilted according to the size of the sheet 16'. At this time, the sheet 16' falls onto the tray 74 which is adjusted to an appropriate inclination angle. When the tray 74 is tilted, the sheets are stacked and aligned by the two vertical surfaces of the guide plate 72 and the abutment guide plate 73, which appear on the upper surface of the tray 74 and match the sheet size.
Separately fixed underplays 1 and 15 are provided, and on these underplays 1 and 75, the stepped guide plate 72 is arranged in a direction parallel to the arrow Z, and the stepped guide plate 73 is arranged in a direction parallel to the arrow Z. It is arranged and fixed at right angles to the Further, the tray 74-L has blank holes 76.77 into which the stepped guide plates and the abutment guide plates 72.73 are fitted.
A guide plate 72 is fitted into the hole 76, and when the tray 74 is tilted, the hole 76 is guided by the vertical surface of the guide plate 72 and moves upward.
, 77 are fitted with an abutting guide plate 73, and when the tray 74 is tilted, the blind hole 77 is guided by the vertical surface of the abutting guide plate 73 and moves upward. And tray 7
4, that is, the opposite side of the part where the hole 76 is located,
It is fixed to the main body of the copying machine by a fulcrum pin 78, and can rotate within a certain range around the bottle 78. A fulcrum bin 78 is used to secure the tray 74 at the proper tilt angle.
Next to the tray 74 is a scale 79 engraved with the size of the sheet, and by matching the scale 79, an appropriate inclination angle of the tray 74 is determined. Next to the scale 79, there is a semicircular long hole in the tray 74 for fixing the tray 74 at an appropriate angle, and there are several screws 80 in the round hole for fixing the tray 74. The head of the screw 80 is engraved with an arrow, which serves as a guide when aligning it with the scale 79.

Now, according to the size of the sheet 16', look at the scale 79 and operate the screw 80 to manually tilt the tray 74 at an appropriate angle around the fulcrum bin 7. For example, the tray 74
When the guide plate 72 is tilted upward at a certain angle, a stepped guide plate 72 is formed.
On the vertical side, for example, A appears with his face sticking out from the stupid hole 77,
Similarly, the vertical surface of the step-shaped abutting guide plate 73, for example, D
appears with its head sticking out from the stupid hole 76. The sheet 16' is guided and regulated on the longitudinal surfaces A and D to be protected. Reference numeral 17' denotes a reference fixing member C fixed on the tray 74 in a direction parallel to arrow Z.

As a fourth embodiment, FIG. 10 shows an example in which the rotational force of a motor is used to change the inclination of the tray instead of manually adjusting the inclination of the tray.

In this example, in contrast to the manual operation method, the sheet size selection is also automatically detected and performed, so that the operability is further improved.

Sensors 81 and 82 detect the size of the sheet 16' in the width direction before the sheet +16' passes the conveying roller 17''.
and sensors 83 and 84 that detect the length of the sheet 16' in the direction of travel. These sensors 81°82.
83 and 84 are all connected to the conveying roller 17 as shown in FIG.
'', sensors 81 and 82 are provided in a direction perpendicular to arrow Z, and sensors 83 and 84 are provided in a direction parallel to arrow Z.

Based on the signals from these sensors 81, 82, 83, 84, the time at which the sheet 16' falls onto the tray 74 determines whether the tray 74 is located near the rear of the bin 78, depending on the size of the sheet 16'. The tilting starts due to the drive of the DC motor 85. When the slope reaches the appropriate position,
The DC motor 85 stops, and the upper surface of the tray 19 is
6', the vertical surfaces of the step-like guide plate 72 and the step-like abutment guide plate 73, for example, A and D, respectively emerge from the elongated holes 76 and 77 of the tray 74, and the sheet 116' is integrated and aligned along the planes A and D that serve as guides. The tray 74 rotates around a fulcrum pin 78, and a DC motor 85 with a gear head 87 meshing with a half-moon gear 86 adjacent to the fulcrum pin 78 rotates, thereby causing the tray 74 to rotate, i.e.
A tilt is performed. The positioning of the inclination of the tray 74 is achieved by a sensor plug 88 fixed to the tray 74 blocking light from concave light-shielding sensors 89, 90, 91 whose concave portions are engaged with the sensor plug 88, so that the DC motor This is done by stopping the drive of 85. For example, if the inclination of the tray 74 adapted to the size of the sheet 16' is 10.
If the light-shielding sensor 89 is provided at a position corresponding to the position shown in the figure, then when the DC motor 85 rotates and tilts the tray 74, the sensor plug 89 fixed to the tray 74 gradually darkens sensor 8
Close to 9 and block light. At this time, the number (M) output from the light-shielding sensor 89 gives a command to the control unit that controls the drive of the DC motor 85, and the DC motor 85 stops at that point.

As a result, the tray 74 can always be stopped at a position with an inclination angle that matches the size of the sheet 16'.

Therefore, depending on the inclination angle, the stepped guide plate 7
2 and the vertical surfaces of the step-shaped abutting guide plate 73 are determined, so that the notebook 16' can be regulated and protected at a position that matches the size of the sear 16'. L-shaped sensor plugs 88' and 88'' are protruded from the sensor plug 88 and engaged with the four parts of the light shielding sensor 90 and 91. This is the same as in the case of .

Note that a pulse motor can be used instead of the DC motor 85 with several gears 87 at the tip, but in that case, the rotation of the pulse motor can be controlled by pulse signals according to the required sheet size. Since it can be done, there is no need for a device to block light.

In this way, the vertical surfaces of the stepped guide plates and abutting guide plates 72 and 73 that match the sheet size are automatically created by tilting the tray 74 above the tray 74, so manual operations are not required midway. There is no need for it, so there is no chance of incorrect operation. Furthermore, there is no variation in the appearance of the vertical surfaces of the stepped guide plates and the abutting guide plates.

The present invention can change the inclination of the tray depending on the size of the sheet and properly regulates and protects the position of the sheet. It has the advantage of being a strawberry that eliminates the problem of the tip of the strawberry not breaking or bouncing back, and not stopping midway because it is too slow.

Note that the sheet stacking device of the present invention can tilt the tray according to the size of the sheet one by one, or tilt the tray according to the size of the sheet after stacking a certain number of copies at once. It can also be tilted.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a device for automatically aligning sheets in a conventional sheet storage device, and Fig. 2 is a perspective view of a device for automatically aligning sheets in a conventional sheet storage device.
FIG. 3 is a perspective view of a device for manually aligning sheets in a storage device; FIG. 3 is a side view according to a first embodiment of the present invention; FIG. 4 is a sectional view of a copying machine according to a first embodiment of the present invention; FIG. 5 is a perspective view of a sheet aligning device in a first embodiment of the present invention, FIG. 6 is a perspective view of a second embodiment of the present invention, and FIG. 7 is a perspective view of a sheet tray according to a third embodiment of the present invention. FIG. 8 is a perspective view of a guide plate, and FIG. 9 is a sectional view of a copying machine according to a third embodiment of the present invention.
The figure is a perspective view showing a sheet aligning device according to a third embodiment of the invention, and FIG. 10 is a perspective view showing a fourth embodiment of the invention.

Claims (1)

[Claims] (I) A sheet storage device for storing sheets in a sheet tray, characterized in that the angle of the tray is changed according to the size of the sheets stored in the tray. (2) The position regulating member is moved in accordance with the size of the notebook in conjunction with a change in the inclination angle of the tray to align the rear end of the sheet in the moving direction.
Sheet accumulating device as described in section. (3) In conjunction with changes in the inclination angle of the tray, the rear end of the sheet in the moving direction is aligned by changing the position regulating part of a separately provided fixing member according to the tray's moving position according to the size of the sheet. The first claim of the claim
Sheet accumulating device as described in section.