JPH0478548B2 - - Google Patents

Description

Detailed Description of the Invention A. Purpose of the Invention [Field of Industrial Application] The present invention is directed to storing sheet materials sequentially discharged one by one from a sheet material output device into a plurality of sheet material storage units called bins. The present invention relates to a sheet material distributing device (generally referred to as a sorter, collating machine, sorting machine, sorting machine, etc.) that distributes and accumulates sheet materials.

Specifically, the sheet material output device outputs (outputs) various image forming devices such as copying machines, printing devices, printers, and other sheet materials (sheet materials such as cut sheet paper, cards, thin boards, etc.) one by one. This is equipment that does this.

[Conventional technology]

Conventional sheet material distribution device (hereinafter referred to as sorter)
can be broadly divided into bin moving type sorters and bin fixed type sorters.

The bin moving type sorter controls the movement of the entire bin array relative to the sheet material discharge port of the sheet material output device (hereinafter referred to as this machine), and sequentially positions the sheet material inlets of individual bins in corresponding positions. This system distributes sheet material to individual bins by going through the bins.

In a fixed bin type sorter, the bin array is immovable.
A sheet path mechanism that selectively communicates from the sheet material discharge port of this machine to the sheet material inlet of each bin in the bin array is formed by a guide plate, deflection plate, etc. This is a system in which the sheet material discharged from the sheet top discharge port is sequentially conveyed and distributed to individual bins.

As a type of fixed-bin sorter, the sheet material discharge port of this machine is controlled to move back and forth sequentially between the sheet material inlets of individual bins in the bin array, and the sheet material is discharged from the sheet material discharge port of the machine. It is envisaged that a configuration would be provided with movable sheet material delivery means for receiving the sheet material and sequentially conveying it to the sheet material inlet of the individual bins and introducing it into the bins.

An example is shown in FIG. In the figure, A is a part of a sheet material output device as the main machine, and in this example, it is an electrophotographic copying machine. 70 is a sheet material discharge port of the machine. C is a sorter installed on the sheet material discharge port side of the machine A. The sorter C is configured as an attachment device attached to the machine A during use, or as a built-in device to the machine A.

In the sorter C, 1a to 1j are a plurality of bins fixedly arranged in multiple vertical stages. 60 is this machine A
Sheet material discharge port side and upper and lower multi-stage bin array 1
A sheet material holding and conveying means (hereinafter referred to as delivery unit) is a movable sheet material delivery means that is controlled to move up and down between the sheet material inlet side of a to 1j, and includes rollers and rollers that grip and convey the sheet material. Coro vs 6
1 and 62, a rotational drive motor (not shown), a sensor 63 for detecting the presence of a sheet material, and the like. The delivery unit 60 is attached to and supported by a belt 66 suspended between a lower drive pulley 64 and an upper driven pulley 65, and the belt 66 is rotated in the forward and reverse directions by controlling the drive pulley 64 in forward and reverse directions. The vertical movement is controlled along with the rotation.

Start key (not shown) of this machine A (copying machine)
When is pressed, the copying operation of this machine starts.
In the sorter C, the delivery unit 60 is always on standby at the position corresponding to the sheet material discharge port 70 on the side of the machine A as shown in the figure, but when the start key is pressed, the delivery unit 60 returns to its home position. When the drive pulley 64 is not located at the home position, the drive pulley 64 is rotated forward or backward to return to the home position (initial setting).

Laura and Colo pair 61,6 of delivery unit 60
2 enters a forward rotation state by energizing the drive motor.

The copied sheet material enters the sorter C side from the machine A side through the discharge port 70.

The sheet material entering the sorter C side is discharged from the discharge port 70.
The tip of the delivery unit 60, which is waiting opposite to the delivery unit 60, enters between the pair of rollers 61 and 62 which are rotating in the forward direction, and passes between the pair of rollers and rollers.

The tip of the sheet material is a pair of rollers 61, 62
When the sheet material passes through the gap for a predetermined length, the sensor 63 detects the presence of the sheet material, and the rotation of the roller/roller pair 61, 62 is stopped in response to the detection signal. As a result, the leading end of the sheet material is firmly held between the pair of rollers. In addition, the drive pulley 64 starts to rotate normally in response to the above detection signal, and the delivery unit 60 moves to the sheet material discharge port 70.
It moves upwards at approximately the same speed as the sheet material is discharged from.

When the delivery unit 60 reaches a position opposite to the sheet material inlet of a predetermined bin, here the uppermost bin 1a, at that point the delivery unit 60
Further upward movement of 0 is stopped. At the same time, the rotational drive of the roller/roller pairs 61, 62 is resumed, whereby the sheet material whose tip end is held between the roller/roller pairs 61, 62 is discharged (distributed) into the corresponding bin 1a. be done.

When it is detected that the sheet material has been discharged into the bin 1a by the passage of the sensor 63 at the rear end of the sheet material, the delivery unit 60 is moved downward by the reverse drive of the drive pulley 64 and returns to the sheet material discharge port. 70 and is returned to its home position, where it waits to receive the next sheet material.

Thereafter, in the same manner as ~, the delivery unit 60 transfers the sheet material from the sheet material discharge port 70 to the sheet material inlet portion of the bin, and the sheet material discharge port 7 of the delivery unit 60 after discharging the sheet material to the bin.
By sequentially repeating the return to 0 for the individual bins 1b, 1c, . . . , a predetermined sheet material distribution to each bin is achieved.

It should be noted that sheet materials are delivered to bins on the lower side of the home position of the delivery unit 60 by controlling the delivery unit 60 to move downward, and return by controlling the movement upward.

[Problem that the invention seeks to solve]

In the sorter having the configuration shown in the above-mentioned example in FIG. - The rear end of the sheet material is introduced into the bin by the rotation of the roller pair 61, 62 and the roller pair 61, 62
You have to wait until the gap has completely passed before you can enter.

Therefore, when the sorter C is used in conjunction with the machine A, such as a high-speed copying machine, in which the interval between sheet materials that are sequentially discharged or the discharge time interval is short, the short interval between the sheet materials or the discharge time interval is short. The return operation of the delivery unit 60 must be performed at an extremely high speed in time for the discharge interval time. However, in order to move at ultra-high speeds, it is necessary to use high-power drive motors, and the sorter mechanism is also subject to a large load, so the mechanism must be made more robust. This will lead to an increase in the size and cost of C.

By designing the distance between the home position of the delivery unit 60 and the sheet material inlet of the bins 1a, 1j that are farthest from there to be short, the maximum return operation time of the delivery unit 60 is shortened. It may be possible to make it in time for sheet materials that are sequentially discharged at short intervals or discharge time intervals, but in this case, the total number of bins (total number of stages) to be arranged must be reduced, or each bin must be It becomes necessary to design the array spacing to be narrow. A decrease in the number of bins will reduce the number of sheets that can be collated, and if the intervals between the bins are narrow, the capacity of each bin to load sheet materials will decrease.

The present invention has been made in view of the drawbacks of the above-mentioned conventional examples, and an object of the present invention is to provide a sheet material distributing device that eliminates the above-mentioned problems and is capable of increasing speed.

B. Structure of the Invention [Means for Solving Problems] The present invention comprises: a plurality of bins for storing sheet materials; and a first sheet material clamping and conveying means that can face the sheet material inlet of each of the bins in turn. and a second sheet material that can face the first sheet material clamping and conveying means in order to receive the discharged sheet material from the sheet material output device and deliver the sheet material to the first sheet material clamping and conveying means. It has a clamping and conveying means, and the second sheet material clamping and conveying means returns and moves the sheet material to a predetermined position after delivering it to the first sheet material clamping and conveying means, and the second sheet in the return movement process. The sheet material conveyance speed V _R of the material clamping and conveying means is the sum V of the sheet material clamping conveyance speed V ₁ of the first sheet material clamping and conveying means and the return movement speed V ₂ of the second sheet material clamping and conveying means. ₁ + _V2 , or the sheet material clamping and conveying force of the second sheet material clamping and conveying means is switched to a released state and maintained. do.

[Function] That is, by providing the two sheet material clamping and conveying means as described above as the sheet material delivery means to each bin, (1) the sheet material discharged from the sheet material output device can be delivered to a predetermined location; The second sheet material clamping and conveying means is moved to the position of the first sheet material clamping and conveying means waiting at a predetermined standby position. The sheet material is transferred from the second sheet material clamping and conveying means side to the first sheet material clamping and conveying means side, and the sheet material is discharged into a predetermined bin by the first sheet material clamping and conveying means. 2) The sheet material is transferred from the side of the second sheet material holding and conveying means that has been moved to the position of the first sheet material holding and conveying means that is waiting at a predetermined standby position, and the leading end side of the sheet material is the first sheet. After the sheet material is transferred to and clamped by the material holding and conveying means, the second sheet material holding and conveying means is moved back to a predetermined receiving position, thereby making it possible to sequentially distribute the sheet materials to each bin. .

With such a sheet material distribution mode, the sheet material is transferred from the second sheet material holding and conveying means side to the first sheet material holding and conveying means side, and the leading end side of the sheet material is transferred to the first sheet material holding and conveying means side. After the sheet material is transferred to and held by the first sheet material holding and conveying means, the sheet material is immediately passed through the second and first sheet material holding and conveying means without waiting for it to be completely discharged into the bin. It is possible to return to a predetermined position (return operation) in order to receive the next sheet material from the sheet material output device.

Therefore, the short sheet material output of the high-speed sheet material output device can be achieved without particularly increasing the return operation speed of the second sheet material holding and conveying means, reducing the total number of each bin, or narrowing the arrangement interval. It becomes possible to respond in sufficient time to the interval or interval time.

As described above, even if the second sheet material clamping and conveying means is immediately shifted to the return operation, the leading edge of the sheet material transferred from the second sheet material clamping and conveying means to the first sheet material clamping and conveying means will not be held against the means side. Since the sheet material is transferred and held, no conveyance failure occurs, and the transferred sheet material is subsequently discharged into a predetermined bin by the first sheet material holding and conveying means.

Further, the second sheet material clamping and conveying means is arranged so that after the leading edge side of the sheet material is transferred to and being clamped by the first sheet material clamping and conveying means, the sheet material still passes through the second sheet material clamping and conveying means. Even if you immediately return to the predetermined position and move it even though it is passing through and has not completely come out, as mentioned above, the second
The sheet material conveyance speed of the sheet material clamping and conveying means V _R
is set to a speed substantially equal to the sum V ₁ +V ₂ of the sheet material transport speed V 1 of the first sheet material clamping and transporting means and the return movement speed _{V 2} of the second sheet material gripping and transporting means, or Since the sheet material clamping and conveying force of the second sheet material clamping and conveying means is switched to the released state and maintained, a pulling force, a squeezing force, The sheet material is stably conveyed to a predetermined bin by the first sheet material holding and conveying means, and is smoothly introduced and discharged without applying an excessive load such as a bending force.

〔Example〕

FIG. 1 is an overall schematic diagram of a sheet material output device A, such as an electrophotographic copying machine, and a sorter, which is a sheet material distribution device B according to the present invention, mounted on the sheet material discharge port side of the electrophotographic copying machine.

Since the configuration and image forming process of the copying machine A itself are well known, only the reference numerals of the main components will be explained here. 71 is a fixed platen glass (original table glass), 72 is an original pressing plate, 73 is a movable optical system consisting of an original illumination lamp, a moving mirror, an imaging lens, a fixed mirror, etc., and 74 is a rotating part. 75 is a photosensitive drum, 75 is a charger, 76 is a developer, 77 is a transfer/separation charger, 7
8 is a cleaning device, 79 and 80 are first and second
81 is a sheet material conveyance device, 82 is an image fixing device, 83 is a pair of sheet material discharge rollers, and 70 is a discharge port for the copied sheet material.

In the sorter B, reference numerals 1a to 1j indicate a plurality of bins fixedly arranged in multiple stages above and below, and 2 indicates a first sheet material holding and conveying means (hereinafter referred to as a first 4 is a vertically movable second delivery unit for receiving the discharged sheet material from the sheet material discharge port 70 on the side of the machine A and delivering the sheet material to the first delivery unit 2. (hereinafter referred to as the second delivery unit).

FIG. 2 is a perspective view of the vertical movement mechanism of the first and second delivery units 2, 4.

The vertical movement mechanism of the first delivery unit 2 consists of a pair of main shafts 31 and 32 supported by bearings in parallel to each other on the lower and upper sides of the sorter, and each of the main shafts 3
Pulleys 33, 33, 34, 34 attached to the rear end and front end of 1, 32, and the rear and front sides respectively suspended from the pulleys 33, 34, 33, 34. a pair of vertical belts 35, 35;
A power pulley 36 attached to the back end of the lower main shaft 31, a forward/reverse rotation motor M1 for vertical movement, and a drive pulley 37 attached to the output shaft of the motor M1.
It consists of a belt 38 suspended between the drive pulley 37 and the power pulley 36. The first delivery unit 2 is supported substantially horizontally by fixing unit side plates 20, 20 on both ends of the pair of vertical belts 35, 35, respectively.

When the vertical motor M1 is driven to rotate in the normal direction, the belt pair 35, 35 rotates in the normal direction, and accordingly, the first
The delivery unit 2 delivers each bin 1a to 1j in multiple upper and lower stages.
It moves upward on the sheet material entrance side. Conversely, when the motor M1 is driven in the reverse direction, the belt pair 35, 35 rotates in the opposite direction, and the unit 2 moves downward accordingly.

The belt pairs 35, 35 are connected to the main shaft 3 on the drive side, respectively.
Pulleys 33, 33 fixed to 1, driven side main shaft 3
Since the belts 35, 35 are suspended and stretched around pulleys 34, 34 fixed to the unit 2, a difference in rotational phase between the belts 35, 35 is unlikely to occur, and the unit 2 moves up and down while maintaining its horizontal position.

Further, vertical rail strips 39, 39 in the vertical direction are attached and supported on the rear and front side plates 11, 11 of the sorter C, respectively.
, the unit side plates 2 on the back side and the front side of the unit 2.
Rail fitting pieces 21 and 21 attached to the outer surfaces of the units 0 and 20, respectively, are fitted, thereby suppressing rattling in the front-back and left-right directions as the unit 2 moves up and down.

Movement mechanisms 51 to 59 of the second delivery unit 4,
In the case of the sorter of this embodiment, M2, 40, and 41 have substantially the same configuration as the first delivery unit 2, and when the vertical motor M2 is driven to rotate in the normal direction, the belt pair 55, 55 rotates in the normal direction. Accordingly, the second delivery unit 4 moves upward. On the contrary, motor M
When the unit 2 is driven in the reverse direction, the belt pair 55, 55 rotates in the opposite direction, and the unit 4 moves downward accordingly.

Figures 3a, b, and c are respectively the first delivery unit 2.
A partially cutaway front view, left side view, and cross-sectional view are shown. In the case of the sorter of this embodiment, the second delivery unit 4 has substantially the same structure as the first delivery unit 2, so in the drawings, the second delivery unit 4 is shown next to the reference numeral of each component of the first delivery unit 2. Write the code of the corresponding component of delivery unit 4 in parentheses and enter the second
A description of the configuration of the delivery unit 4 will be omitted.

The first delivery unit 2 includes a pair of sheet material guide plates 22, 2 provided integrally with the side plates and facing each other vertically between the unit side plates 20, 20 on the back side and the front side.
2, a roller shaft 23 supported by bearings between the side plates 20, 20, and a plurality of (four in this example) rollers 24 made of rubber or the like attached at intervals along the length of the roller shaft 23. , a pressure roller 25 that is constantly pressed against the upper surface of each roller 24 with a moderate force by a leaf spring 26, a sheet material conveying motor m1 attached to one side plate 20, and a rotating shaft of the motor. The attached drive gear 27, the power acquisition gear 28 meshed with the drive gear and attached to the shaft end of the roller shaft 23, and the sheet material presence detection sensor 29 provided on the sheet material exit side of the sheet material guide plates 22, 22.
a, 29b (for example, a photocoupler consisting of a light receiving element and a light source), each bin position detection sensor 30 (for example, a photocoupler), and the like. In addition, sensor 30
In the second delivery unit 4, a sensor 50 detects the position of the first delivery unit 2.

The contact nip between each roller 24 and the pressure roller 25 is located within the sheet material passage between the upper and lower sheet material guide plates 22, 22.

In FIGS. 4a and 4b, the first delivery unit 2 is located corresponding to the sheet material inlet of the predetermined bins 1 (a to j), and the second delivery unit 4 is located corresponding to the first delivery unit 2. They are a partially cutaway plan view in a positioned state and a cross-sectional view at a partial position of the sensors 30 and 50.

During its upward or downward movement, the first delivery unit 2 uses a sensor 30 to detect and count the flag m protruding from the sheet material inlet side of each bin, thereby detecting the position of each bin and detecting the sheet material in a predetermined bin. It is controlled to move, position and stop with high precision to the position corresponding to the entrance.

The second delivery unit 4 detects the flag n protruding from the side of the first delivery unit 2 during its upward or downward movement process.
The delivery unit 2 is controlled to move, position and stop with high precision to a position corresponding to the delivery unit 2.

(A) Operation steps in sword mode (Figure 5) Set the original on the platen glass 71 of the copying machine (machine A), input the predetermined sort mode conditions to the control circuit on the console section, and press the start key. .

Standby processing on the sorter B side is started in response to a press-down signal of the start key. That is, whether the first delivery unit 2 is located at a bin position as a predetermined home position, here corresponding to the sheet material inlet of the uppermost bin 1a, or whether it is located at the predetermined home position of the first delivery unit 2, Is it located at a position corresponding to the sheet material discharge port 70 on the machine A side as the home position?
is confirmed in the control circuit. These confirmations are made using a signal from a detection means (not shown) such as a micro switch that is turned on when each unit 2, 4 is located at the home position.

When one or both of the first and second delivery units 2 and 4 are not located at their respective home positions, the vertical movement motors M1 and M2 (second
The normal or reverse rotation of one or both of the units 2 and 4 shown in FIG.

When the above standby processing on the sorter B side is completed, the machine A starts the copying operation.

At the same time, the sheet material conveying motors m1 and m2 of the first and second delivery units 2 and 4 (the third
(Fig. 5) are driven in normal rotation, and the roller pairs 24, 25, 44, 45 of each unit 2, 4 are in the normal rotation state and are ready to receive the sheet material (Fig. 5b).

The first sheet material P ₁ that has undergone image formation processing on the side of the machine A is delivered to the discharge port 70 by a pair of discharge rollers 83.
is introduced into sorter B through.

The introduced sheet material _P1 enters between the upper and lower guide plates 42, 42 of the second delivery unit 4, which is waiting with the discharge port 70 position as its home position, and its leading end is guided by the guide plates 42, 42. and enters the nip portion of the roller/roller pair 44 and 45.

Since the roller pairs 44 and 45 are in a normal rotation state, the sheet material P ₁ is moved as it is to the guide plate 42,
42 (Fig. 5c).

When the leading end of the sheet material _P1 that has passed between the pair of rollers 44 and 45 is detected by the sensors 49a and 49b, the rotation of the sheet material conveyance motor m2 of the second delivery unit 4 is stopped at that point.
Therefore, the leading end of the sheet material _P1 is stably and firmly held between the pair of rollers 44 and 45, which have stopped rotating.

At the same time, the vertical motor M2 of the second delivery unit 4 is driven to rotate in the forward direction, and the second delivery unit 4 delivers the sheet material between the pair of rollers 44 and 45.
While holding the tip of P ₁ , move upward (Fig. 5 d). That is, the sheet material _P1 is transported upward. The upward movement speed of this unit 4 is determined by the sheet material discharged from the discharge port 70 on the A side of the machine.
By setting the upward movement speed to be the same as the discharge speed of _P1 or slightly slower than the discharge speed, the sheet material portion between the roller/roller pair 44, 45 and the discharge roller pair 83 is pulled. Or,
It is transported upward while maintaining an appropriate loop without being subjected to excessive loads such as bending.

The above-mentioned flag n indicates that the second delivery unit 4 that has moved upward has reached a position corresponding to the first delivery unit 2 that is waiting at a position corresponding to the sheet material inlet of the topmost bin 1a. When detected by the sensor 50 (FIG. 4), the signal immediately stops normal rotation of the vertical motor M2 of the second delivery unit 2. That is, the upward movement of the second delivery unit 4 is stopped.

At the same time, normal rotation of the sheet material conveyance motor m2 of the second delivery unit 4 is restarted,
Due to the rotation of the pair of rollers 44 and 45, the sheet material _P1 held therebetween is conveyed to between the sheet material guide plates 22 and 22 on the first delivery unit 2 side (FIG. 5e).

The leading edge of the sheet P ₁ is guided by guide plates 22 and 22 and enters the nip portion of the pair of rollers 24 and 25 of the first delivery unit 2. The roller pressure of the roller/roller pair 24, 25 is set to be the same as or higher than the roller pressure of the roller/roller pair 44, 45 of the second delivery unit 4, and the tip of the sheet material _P1 is Laura Coro vs. 24,2
It is transported while being securely held between the two.

Since the roller pair 24, 25 is already in the normal rotation state, the introduced sheet material _P1 continues to be conveyed forward within the first delivery unit 2 (FIG. 5f).

When the leading edge of the sheet material P ₁ introduced into the first delivery unit 2 and conveyed forward through the pair of rollers 24 and 25 is detected by the sheet material presence detection sensors 29a and 29b, the signal is As a result, the vertical movement M2 of the second delivery unit 4 is reversely driven, and the downward movement of the unit 4 is started. At this point, the leading end of the sheet material P ₁ is sufficiently held between the pair of rollers 24 and 25 on the first delivery unit 2 side, and is transferred from the second delivery unit 4 side to the first delivery unit 2 side. The sheet material P ₁ is delivered reliably.

At the same time, the sheet material conveying motor m2 on the second delivery unit 4 side is switched to a high-speed forward rotation state, that is, the roller 44 is rotated at an increased speed (FIG. 5g).

The high rotational speed of this roller 44, that is, the sheet material conveyance speed V _R during the return movement process of the second delivery unit 4 is equal to the sheet material conveyance speed V ₁ by the roller/roller pair 24, 25 on the first delivery unit 2 side. , the downward movement speed (return speed) V ₂ of the second delivery unit 4 is approximately equal to the sum V ₁ +V ₂ , and therefore the second delivery unit 4
Even if the unit 4 is moved downward even though the sheet material P ₁ is still passing through the interior and has not completely passed through, there will be no tensile force, rubbing force, bending force, etc. on the sheet material portion between the units 2 and 4. load is substantially eliminated or significantly reduced.

After moving downward, the second delivery unit 4 returns to the home position, that is, the sheet material discharge port 70 of the machine A.
When the position corresponding to is reached, the vertical movement motor M
2 is stopped, and the sheet material conveyance motor m
The rotational speed of No. 2 is changed to the normal rotational speed state before being changed to the high speed, and the machine waits to receive the next sheet material to be discharged from the machine A side (Fig. 5h).

Until the second delivery unit 4 returns to the home position as described above, the rear end of the sheet material P ₁ delivered to the first delivery unit 2 is transferred from inside the second delivery unit 4. I'm getting through it.

If the speed V ₂ at which the second delivery unit 4 returns to the home position is made as fast as possible, the next sheet material can be received with plenty of time and the conveyance can be ensured. It is preferable.

On the other hand, the sheet material P ₁ delivered to the first delivery unit 2 side is introduced into the uppermost bin 1a where the unit 2 is located by the forward rotation of the roller pair 24, 25 on the side of the unit. be done.

Sensors 29a and 29 at the rear end of the sheet material indicate that the sheet material _P1 has been introduced and discharged into the bin 1a.
When the passage of position b is detected, the vertical motor M1 of the first delivery unit 2 is reversed and the downward movement of the unit 2 is started (FIG. 5i). It is advantageous to perform this downward movement of the unit 2 at as high a speed as possible.

When the flag m and the sensor 30 (Fig. 4) detect that the first delivery unit 2 that has moved downward has reached the position corresponding to the sheet material inlet of the next bin 1b, it immediately moves up and down. The reverse rotation of the motor M1 is stopped, and the unit 4 stands by at a position corresponding to the sheet material entrance of the next stage bin 1b (FIG. 5j).

2nd sheet material from machine A side to sorter B side
P ₂ emissions are introduced.

The same operations as those mentioned above are performed (Fig. 5 k to m).

Since the first delivery unit ₂ is located corresponding to the second bin 1b from the top, the second sheet material P2 is introduced and discharged into the second bin 1b.

When the sensors 29a and 29b detect that the second sheet material has been introduced and discharged into the bin 1b, the first delivery unit 2 is moved downward in the same manner as described above (FIG. 5n). .

Similarly, the first delivery unit 2 stops and waits at a position corresponding to the sheet material entrance of the next bin, the third bin 1c from the top.

By repeating the above operations, the sheet materials are sequentially distributed (collected) to a plurality of predetermined bins.
is being executed.

For example, when collating 10 copy sheets in a set of 3 sheets, the above distribution operation for the copy sheets of the first original is performed in bins 1a to 1j (bins 1 to 10).
Then, for the copy sheet of the second original, perform the process in reverse order to bins 1j to 1a (bins 10 to 1), and for the copy sheet of the third document, perform the process again in order to bins 1a to 1j. If you do this, the collation work will be carried out efficiently.

(B) Operation steps in group (collate) mode Standby processing is performed in the same way as A- to A- in the sort mode.

The first discharged sheet material from the machine A side is introduced into and discharged from the topmost bin 1a by the same operation as A- to A in the sorting mode.

Even after the introduction of the first sheet material into the bin 1a is completed, the first delivery unit 2 remains in the position of the bin 1a and is not ready to introduce the second and subsequent sheet materials to be discharged from the machine A. to wait for.

Regarding the predetermined number of sheets from the second sheet onward that are discharged from this machine A, they are sequentially A-~
By repeating the operation A-, the topmost bin 1
It is introduced into and discharged from a.

When the predetermined number of copies have been completed, all of those copy sheets are introduced and discharged into the topmost bin 1a, and the start key on the machine A side is pressed again, the vertical movement motor of the first delivery unit 2 is activated. M1
is driven in reverse to move the first delivery unit 2 downward.

The first delivery unit 2, which has moved downward, stops and waits at a position corresponding to the sheet material inlet of the second bin 1b from the top, similarly to A-.

All the copy sheets of a predetermined number that are sequentially discharged from the machine A to this second bin 1b are introduced and discharged by repeating the operation steps A- to A- and A-23. .

When the start key on the A side of the machine is pressed again,
The first delivery unit 2 is the third bin 1 from the top.
The lowering movement is controlled to the sheet material inlet portion c, and a predetermined number of sheet materials similar to the above are introduced into and discharged from the bin 1c.

In this way, each time the start key on the machine A side is pressed, the first delivery unit 2 is controlled to move down one bin level at a time, and delivers sheet materials in collate mode to each bin up to the lowest bin 1j. can be distributed.

(C) Operation steps in non-sort mode Standby processing is performed in the same way as A- to A- in the sort mode.

The operations A- to A- in the sort mode and B- and B- in the collate mode are repeated, and all the sheet materials sequentially discharged from the machine A are placed in the topmost bin 1a. It is introduced and discharged.

Here, it is preferable that the sheet material conveyance speed of the first and second delivery units 2 and 4 be close to the sheet material discharge speed from the machine A in order to avoid applying a load to the sheet material.

Further, when the sensors 49a and 49b detect that the sheet material has passed through the second delivery unit 4, the sheet material conveyance speed on the first delivery unit 2 side may be increased. Also, the sensor on the machine A side detects that the rear end of the sheet material on the machine A side has passed through the fixing device 82 and the pair of discharge rollers 83, and the detection signal causes the first and second sorter B side to Delivery unit 2, 4
The sheet material conveyance speed may be increased.

(D) Operation steps in random access mode Standby processing is performed simultaneously with A- to A- in the sort mode.

For example, the first sheet material is the topmost bin 1.
When instructed by the machine A side to put it in a,
The operations A- to A- in the sorting mode are performed, and the first sheet material is discharged to the topmost bin 1a.

The next second sheet material is in the bottom bin 1j
Assume that there is an instruction from the machine A side to put the bin in
j is indicated).

When the sensors 29a and 29b of the first delivery unit 2 detect that the first sheet material has been discharged to the topmost bin 1a, and the bin 1j is further designated, the The vertical motor M1 is driven in the reverse direction, and the unit 2 immediately moves downward toward the bin 1j.

When the flag n and the sensor 30 detect that the first delivery unit 2 that has moved downward has reached the position corresponding to the sheet material inlet of the designated bin 1j, the motor M1 stops and the unit 2 It stops at position 1j and waits to receive the next second sheet material.

On the other hand, due to the operation of A- in the sorting mode of the second delivery unit 4, the second delivery unit 4 is returned to the home position, that is, the position corresponding to the sheet material discharge port 70 of the main machine A, and the second delivery unit 4 is moved back to the position corresponding to the sheet material discharge port 70 of the machine A. Waiting for introduction.

When the second sheet material is discharged from the machine A, the same operations as A- to A- in the sorting mode are performed.

Since the first delivery unit 2 is waiting at a position corresponding to the lowest bin 1j, this second sheet material is discharged into the bin 1j by the first delivery unit 2.

The sensor 29 of the first delivery unit 2 indicates that this second sheet material has been discharged into the bin 1j.
a, 29b, the first delivery unit 2 then moves to the designated bin position (1a-1j
start moving to an arbitrary bin position).

By repeating the above-described operations, sheet material distribution in a random mode is executed in which sheet materials sequentially discharged from the machine A are discharged one by one into an arbitrarily designated bin. Even in this mode, compared to the conventional method, the time required to transfer the sheet material from the second delivery unit 4 to the first delivery unit 2 can be used as the time for the first delivery unit 2 to move to the next bin. As a result, the amount of movement of the delivery unit can be increased, thereby making it possible to increase the interval between the bins to increase the sheet material loading capacity of each bin, and to increase the total number of bins arranged.

As a means for reducing the load on the sheet material during the process in which the second delivery unit 4 returns to the home position from the position of the first delivery unit 2 that delivered the sheet material, there is a method for reducing the load on the sheet material during the return movement process of the unit. It is also effective to release the sheet material clamping and conveying force of the unit.

6a and 6b show an example of the release mechanism, in which the second delivery unit 4 is equipped with a lever 92 that is controlled to swing around a support shaft 91 by an electromagnetic solenoid plunger 90, and the tip of the lever is On the side, roller 45 of roller pair 44, 45 is connected to roller 4.
It is engaged with a leaf spring 46 which presses against the spring 4. 93 is a lever return spring.

When the solenoid 90 is de-energized, Fig. 6a
The sheet is rotated counterclockwise around the support shaft 91 by the return spring 93 as shown in FIG. The material is held in a state where it can be transported.

When the solenoid 90 is energized, the sixth
As shown in FIG.
A gap is created between the upper surface of the sheet material 4 and the roller 44, that is, the sheet material clamping and conveying force is released.

Therefore, when the second delivery unit 4 is in the return movement process, the solenoid 90 is energized to keep the sheet material gripping and conveying force of the unit 4 in a released state, and the unit 4 reaches the home position. At this point, by cutting off the power to the solenoid 90, the sheet material can be held and conveyed again.

C. Effects of the Invention As described above, the sorter of the present invention is equipped with two sheet material clamping and conveying means, the first and second, and the sheet materials are distributed to each bin by the linked operation of both of the means. Because it is a thing, the second
Regarding the sheet material clamping and conveying means, the sheet material is transferred from the means side to the first sheet material clamping and conveying means side, and the leading end side of the sheet material is transferred to the first sheet material clamping and conveying side and is clamped. After that, the next sheet material is immediately received from the sheet material output device without waiting for the sheet material to pass through the first and second sheet material holding and conveying means in order and completely discharged into the bin. It becomes possible to return to a predetermined position (return operation).

Therefore, the short sheet material output of the high-speed sheet material output device can be achieved without particularly increasing the return operation speed of the second sheet material holding and conveying means, reducing the total number of each bin, or narrowing the arrangement interval. It becomes possible to respond in sufficient time to the interval or interval time.

As described above, even if the second sheet material clamping and conveying means is immediately shifted to the return operation, the leading edge of the sheet material transferred from the second sheet material clamping and conveying means to the first sheet material clamping and conveying means will not be held against the means side. Since the sheet material is transferred and held, no conveyance failure occurs, and the transferred sheet material is subsequently discharged into a predetermined bin by the first sheet material holding and conveying means.

Further, the second sheet material clamping and conveying means is arranged so that after the leading edge side of the sheet material is transferred to and being clamped by the first sheet material clamping and conveying means, the sheet material still passes through the second sheet material clamping and conveying means. Even if you immediately return to the predetermined position and move it even though it is passing through and has not completely come out, as mentioned above, the second
The sheet material conveyance speed of the sheet material clamping and conveying means V _R
is set to a speed substantially equal to the sum V ₁ +V ₂ of the sheet material transport speed V 1 of the first sheet material clamping and transporting means and the return movement speed _{V 2} of the second sheet material gripping and transporting means, or Since the sheet material clamping and conveying force of the second sheet material clamping and conveying means is switched to the released state and maintained, a pulling force, a squeezing force, The sheet material is stably conveyed to a predetermined bin by the first sheet material holding and conveying means, and is smoothly introduced and discharged without applying an excessive load such as a bending force.

Therefore, the intended purpose is well achieved and it is effectively suitable as a sheet material dispensing device for use in, for example, high-speed copying machines.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a sorter according to the present invention and an electrophotographic copying machine equipped with the sorter, Fig. 2 is a perspective view of the vertical movement mechanism of the first and second delivery units, and Figs. 3 a, b, and c. are a partially cutaway front view, a left side view, and a cross-sectional view of the delivery unit, respectively. Figure 4a,
b shows a partially cutaway plan view and a cross-sectional view of the first delivery unit in a position corresponding to a predetermined bin position and the second delivery unit in a corresponding position to the first delivery unit; Figures 5a to 5n are diagrams of the operation process of the sorter, Figures 6a and b are examples of a mechanism for releasing the sheet material clamping and conveying force of the second delivery unit, and Figure 7 is an example of a sorter with only one delivery unit. This is a schematic diagram. A is a copying machine as a sheet material output device, 70 is a sheet material discharge port, B and C are sorters, 1a to 1j
2 and 4 are first and second movable sheet material holding and conveying means.

Claims (1)

[Scope of Claims] 1. A plurality of bins for storing sheet materials; a first sheet material holding and conveying means that can face the sheet material inlet of each bin in turn; and sheet material discharged from the sheet material output device. and a second sheet material clamping and conveying means that can face the first sheet material clamping and conveying means in order to receive the sheet material and deliver the sheet material to the first sheet material clamping and conveying means, and sheet material output. A first sheet material clamping and conveying unit that causes a second sheet material clamping and conveying means to clamp the discharged sheet material from the apparatus at a predetermined receiving position, and the second sheet material clamping and conveying means is waiting at a predetermined standby position. The sheet material is transferred from the second sheet material clamping and conveying means to the first sheet material clamping and conveying means, and the sheet material is moved to a predetermined position by the first sheet material clamping and conveying means. On the other hand, after the second sheet material clamping and conveying means delivers the sheet material to the first sheet material clamping and conveying means, it returns to a predetermined receiving position, and in the return movement process, the second sheet material clamping and conveying means returns to a predetermined receiving position. The sheet material clamping conveyance speed V _R of the sheet material clamping and conveying means is the sum of the sheet material conveying speed V ₁ of the first sheet material clamping and conveying means and the return movement speed V ₂ of the second sheet material clamping and conveying means.
A sheet material distributing device characterized in that the speed is set to approximately equal to V ₁ +V ₂ or the sheet material gripping and conveying force of the second sheet material gripping and conveying means is switched to a released state and held.