JPS6119537B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sorter for collating copy sheets from a copier into one or more sets. A copying machine equipped with the sorter of the present invention also forms part of the present invention.

Many sorters are known in the art for collating copier copy sheets into a desired number of sets.
For example, U.S. Pat. It is designed to collate into multiple groups.

It is an object of the present invention to provide a sheet sorter as described above that allows easy hand or tool access inside the sheet sorter to enable inspection and removal of jammed paper. US Patent No.
No. 3,990,695 and No. 3,973,769 disclose that for the above-mentioned access, a vertical conveying device is pivoted away from a main frame of the sorter, and each storage shelf or bin serving as a sheet receiving tray is supported on this main frame. ing.

According to the invention, a plurality of seat storage shelves (bins)
and a conveyance device for conveying sheets to the storage shelf (bin), respectively.
a frame, the frames having a first, closed position, in which the conveying device is in conjunction with the bin, and a first, closed position in which the conveying device and the bin are separated for sheet entry. a sheet sorter device disposed for relative movement between a second, open position, and a guide mounted to the second frame to guide the sheets along the sheet transport device; There is provided a sheet sorter apparatus, wherein the guide is moved away from the transport device when the frames are separated to the open position to facilitate removal of sheets from between the transport device and the guide. be done.

According to one embodiment of the invention, the guide is arranged separately in close proximity to the sheet transport device when the frame is in the first position and is spaced apart from the transport device when the frame is in the second position. ing.
Pivotally mounted on the guide is a plate that extends across the sheet transport and is inclined towards the sheet transport in the direction of sheet movement when the frame is in the first position.

If the sheet transport device consists of one or more tensioned belts, the sheet may be easily removed by reducing belt tension. In other embodiments where the guide is arranged to form a nip with the belt, the movement of the guide away from the belt reduces belt tension, thereby reducing the nip force between the belt and the guide.

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

FIG. 1 shows an example of an automatic xerographic copying machine 10 having a sorter 11 according to the present invention. A copier 10 shown in FIG. 1 shows various components for making copies from originals. Although the apparatus 11 of the present invention is particularly suitable for use in an automatic xerographic reproduction machine 10, it will be apparent from the following description that the apparatus 11 of the present invention is suitable for use in a wide variety of processing apparatus, including other electrostatographic reproduction machines. is also suitable,
The device of the invention is not limited to the specific embodiments shown herein.

A copying machine 10 shown in FIG.
2, the outer peripheral surface of this drum member is coated with a suitable photoconductive material 13. An example of a photoconductive material suitable for this purpose is US Pat. No. 2,970,906.
Disclosed in the issue. The drum 12 is rotatably supported within a copier frame (not shown) by a shaft 14 and rotates in the direction of arrow 15 to spread the photoconductive material or image bearing surface 13 on the drum into a plurality of xerographic images. Pass through a processing station. Suitable drives (not shown) are provided to power and coordinate the motion of the various cooperating mechanical parts so that a faithful reproduction of the original input image information is produced on paper. etc. on a sheet of final image support material 16, such as.

Xerographic processing methods are well known and described in numerous patents and publications. Examples of these documents include Focal Press (Focal Press).
"Electrophotography" by Schaffert, published in 1965 by
(Electrophotography), and ``Xerography and its Processing'' (by Dessauer and Clark).
and Related Processes).

First, drum 12 moves photoconductive surface 13 past charging station 17 . In the charging station 17, in preparation for image formation,
An electrostatic charge is uniformly applied onto the photoconductive surface 13.
This charging is performed by a corona generating device as described in US Pat. No. 2,836,726.

The drum 12 is then rotated to an exposure station 18 where the charged photoconductive surface 13 is exposed to a light image of the original input image information, thereby selectively removing the charge in the exposed areas and The input image is recorded in the form of an electrostatic latent image. A suitable exposure device is of the type described in US Pat. No. 3,832,057. After exposure, drum 12 rotates to convey the electrostatic latent image recorded on photoconductive surface 13 to development station 19, where a conventional developer is applied to photoconductive surface 13 of drum 12;
Turn a latent image into a visible image. A suitable exposure station is disclosed in US Pat. No. 3,707,947. This patent describes a magnetic brush development device that uses a magnetizable developer having coarse ferromagnetic carrier particles and toner colorant particles. The developer material is transported through a directional electric flux field to form a brush of developer material. The electrostatic latent image recorded on photoconductive surface 13 is developed by contacting it with a brush of developer material.

Sheets 16 of final image support material are supported in stacks on a liftable stack support tray 20. When the stack is in the raised position,
A sheet separator 21 feeds individual sheets from the stack to a stacking device 22. The sheet is then fed forward to transfer station 23 where it is properly registered with the image on the drum. Photoconductive surface 1
The developed image on 3 is brought into contact with a sheet 16 of final image support material in a transfer station 23, and the toner image is transferred from the photoconductive surface 13 to the contact surface of this sheet 16. The final image support material may be paper, plastic, etc. as desired.

After transferring the toner image to the sheet of final image support material 16, the image-bearing sheet is transferred to a suitable fuser 2.
4, and the transferred powder image is fixed on the sheet by this fixing device. A suitable type of fuser is described in US Pat. No. 2,701,765. After fusing, sheet 16 is advanced to a suitable ejection device, such as tray 25.

Although most of the toner powder is transferred to the final image support 16, some residual toner remains on the photoconductive surface 13 after the toner powder image is transferred to the final image support.
It usually remains at the top. Any residual toner remaining on photoconductive surface 13 after the transfer process is removed by cleaning.
Drum 12 as it passes station 26
removed from The toner particles are mechanically removed from the photoconductive surface 13 using any conventional device, such as the blade described in US Pat. No. 3,740,789.

From the foregoing description, it is hoped that the general operation of automatic xerographic reproduction machine 10 incorporating apparatus 11 of the present invention is understood.

The present invention is intended to provide a compact, inexpensive, reliable, low power consumption sorter for copiers. The present invention also contemplates providing a modular construction that allows the number of sorter bins to be easily changed according to customer requirements.

The various conventional techniques described above have been designed to achieve their respective objectives. However, these have various drawbacks. For example, using a vacuum conveyor and achieving high reliability in sheet handling is extremely expensive in terms of power consumption.

Referring to FIGS. 1-7, the sorter 11 is located near the copy sheet ejection section of a xerographic copier. As the sheet 16 emerges from the fuser 24, it is conveyed along a horizontal sorter transport 30 by a copier discharge roll 27. Turning gate or rotating chute 31
is provided, and the sheets 16 are transferred to the horizontal sorter conveyor 3.
0 into the output tray 25, or the sheet continues to advance along the horizontal transport. When the chute 31 is in the upper position shown in solid lines in FIG.
exits and falls into a discharge tray that slopes downwardly toward the copier 10. An O-ring 33 is disposed around the lower discharge roll 27 and an adjacent idler roll 34 located below the lower discharge roll. The function of the O-ring 33 is to assist in stacking the sheets into the discharge tray 25 by forcing the trailing edge of the sheet downwardly into the tray.
If you want to sort, move the turning chute 31 to the lower position as shown by the chain line in FIG.
The sheets are fed along the horizontal conveyor 30 of the sorter 11. The turning chute is solenoid 3
5.

The driven pinch roller 40 is the horizontal sorter conveyor 30
It is placed at an intermediate position along the The pinch roller is rotated to advance the sheet onto the discharge roll 27 at approximately equal speed. A lower roller 41 is pinned to a driven shaft 42. Upper roller 4
3 is loosely fitted onto the shaft 44. A lever driven jam detection switch 45 is provided after the roller 40,
It is designed to detect jams in the horizontal sorter conveyor.

The sheet guides 46 and 47 are wire-shaped and are pivotally supported within the main sorter frame 50 around shafts 51 and 52, as shown in FIG. A lever 53 carried on the outer ends of shafts 51 and 52 limits the rotational movement of guides 46 and 47 to eliminate jamming, thereby preventing the guides from remaining open during operation. .

As the sheet 16 advances further along the horizontal conveyor 30, it is fed into a nip formed by a rotating roll 60 and a drive belt 61. When the nip is actuated, the sheets 16 are guided by the rotating baffle 62 onto the vertical conveyor 63 of the sorter 11. The drive belt 61 is driven at a high speed relative to the horizontal transport roll or pinch roller 40, so that the copy sheet is nipped between the rotating roll 60 and the drive belt 61, and the sheet is transferred to the horizontal transport roll 40. pulled from the nip at high speed. To do this, the driven lower roll 4
0 is driven through the overrun crack 64 and the sheet 1 is driven by the vertical conveyor drive belt 61.
The driving force applied to roller 6 allows roller 40 to be overrun.

The vertical conveyor 63 includes a set 70 of a plurality of pinch rolls.
It consists of Each set of pinch rolls is disposed adjacent to each pin 71 of the sorter 11. A plurality of spaced drive belts 61 are arranged from front to back across the width of the sorter. These belts are wrapped around idler pulleys 72 and 73, with the inner run of belt 61 being adapted to wrap around rotating rolls 60 and engage the drive train with the sheet sandwiched therebetween. The inner run 74 of belt 61 runs through the nip of each pinch roll set 70. The pinch rolls of set 70 are disposed on respective shafts 75 for free movement. A drive pulley 76 is provided at the lower end of the vertical conveyor 63 to provide a drive input to the belt 61. Drive belt 61 is in driving engagement with the sheet 16 as it is conveyed along vertical conveyor 63. An internal pinch roll 77 is supported on the main sorter frame 50. An external pinch roll 78 is supported within a frame assembly or door 80 that rotates away from the main sorter frame 50 to allow the operator to access the sheet path of the vertical transport 63 for jam removal. It is now possible to enter.

The vertical sorter pin array consists of a plurality of sorting trays 81 arranged in parallel one above the other, creating vertical rows of pins. Each pin 71 is defined by a tray 81 that receives a sheet.
The first bin 71A has a desired working width to accommodate the desired number of copy sheets collected therein.

The last bin 71O of the sorter 11 has a corresponding width. The width of bin 71 is determined from the sheet support surface 82 of tray 81 to the bottom surface 83 of the next adjacent tray. Middle bins 71B to 71I and 71K
The widths from 71N to 71N are smaller than the widths of the first and last bins.

Although the illustrated sorter 11 has 15 bins, as will be discussed below with respect to FIG. can be reduced to This flexibility of 10 and 15 bottles is
This is obtained by employing a bin 71J with a number 10 having the same width as the first and last bins 71A and 71O. If you want to use a 10-bin sorter,
This bin 71J with number 10 becomes the final bin.

By using the intermediate bins 71B to 71I and 71K to 71N arranged at narrow intervals, the apparatus can be made extremely compact.

In the following explanation, the large-width bottle 71
A, 71J, and 71O are called full-width bins, and smaller width bins 71B to 71I and 71K to 71N are called compact bins. Each of the bins 71 can accommodate approximately the same number of sheets.

Each of the bins 71 except the last bin 71O is associated with a series of turning gates 90, each supported on a shaft 91 which is journalled in the sorter frame 50. A plurality of deflecting fingers 92 are supported along each axis 91 and spaced apart from each other to define respective gates 90 . As shown in FIG. 6, the deflection fingers 92 are disposed protrudingly between respective pinch rolls 77, which are also spaced apart from each other along their respective axes 75. Using the stationary turning chute 95, the sheet 16 is transferred to the last bin 71O.
It is designed to lead inward.

Compact bins 71B to 71I and 71
K through 71N are articulated so that the bin entrances are selectively widened when sheets are fed into them. This turns the lever 93 into the gate shaft 9.
This is done by attaching it to the end of 1,
This lever acts against the bottom surface 83 of the tray 81 defining the top of each bin with which the shaft 91 is associated. Lever 93 selectively acts against tray 81 outside the sheet path to cam the tray upwardly and widen the bin entrance opening as sheets are fed into the bin.

Each tray 81 of sorter 11, except the top tray 25, which serves as a tray for unsorted copy sheets for copier 10, and the bottom tray resting on sorter frame 50, are rotationally supported within sorter frame 50. has been done. Tab 1
00 is provided at one end of the tray 81. tab 10
0 is mounted through a slot in the sorter frame 50 to rotationally support the tray within the frame. A removable retaining pin 101 is mounted through a hole in the tray tab 100 to retain the tray within the frame 50. The articulated tray 81 is arranged so that its other end is supported by a cam-actuated lever 93. The non-articulated tray 81, ie the top tray associated with each full width bin 71J and 71O, has its free end supported by a pin 102 within the sorter frame 50, as shown in FIG.
It is arranged so that it is placed on the

A lever 93 that operates like a cam is a full-width bin 71
A, 71J and 71O are also provided on the turning finger shaft 91, but these levers may be omitted. That is, the arcs of these levers do not cause them to engage the bottom of the tray 81 above the bin with which they are associated. These levers are included in the device simply because the turning gate assembly 90 containing these levers 93 is easier to assemble as a common unit for each bin 71. be.

Each turning gate shaft 91 extends through the back of the sorter 50 and has an adjustable driven member 10 at its extending end.
It has 4.

A bin index drive mechanism 110 for sorter 11 is shown in FIGS. 2, 3, and 8.
Diversion gate 90 for the first bin 71A is arranged to be actuated by solenoid 111. Armature 1 of solenoid 111
12 is connected to the outer end of the turning gate shaft 91 by a fork-shaped coupling member 113. Only the shaft 91 of the first turning gate is the driven member 1
This is an axis that does not have 04. A compression spring 115 biases the first gate 90, causing it to close when the solenoid 111 is not activated.

Solenoids 111 are connected to a sorter control (not shown) and are actuated sequentially for sufficient time to divert sheets 16 from vertical transport 63 into first bin 71A. Solenoid driven diversion gate 90 for first bin 71A
can be used to recital the sorter 11 to accept the first sheet of the next page to be copied without regard to the position of the cam drive 120 which sequentially operates the diverting gates of the remaining bins 71.

Each remaining turning gate 90 is controlled by a modular cam drive 120 supported within the rear frame 50 of the sorter 11. A plurality of lower shafts 121 are provided supporting cam units 122 and actuated on respective driven members 104 to actuate each turning gate 90 in turn. Each cam unit 122 has a cam portion 123 and a gear portion 124.
The cam members are arranged such that the cam portion 123 of one cam unit 122 is on one side of each gear portion 124 and the cam portion 123 of the next adjacent unit 122 is on the opposite side of each gear portion 124. ,
arranged alternately. The high point of the cam part 123 is
Bin 71 by engaging driven member 104
The turning gates 90 are arranged to be operated one after another. Gear portion 12 of each cam unit 122 for bins 71B to 71I
4 are interlocking with each other. Similarly, bottle 71J
The gear portions of the cam unit 122 for the gears 71N to 71N also mesh with each other. Bins 71I and 7
There is no connection between the gear 124 associated with the cam unit 122 for 1J. This allows the bin arrangement to be modular, allowing the lower five bins to be removed as needed, resulting in considerable cost savings. The modification to the 10-bin type will be explained later with reference to FIG. 15.

An input drive pulley 125 is rotatably supported around a shaft 127, and is connected to the upper cam unit 122 via a coaxial gear section 128. It meshes with the gear part 124.
A second input drive pulley 130 is rotatably supported around a shaft 131 and connected to the lower gear section 124 via a coaxial cam section 132.
It meshes with the gear portion 124 of the unit. Input drive pulleys 125 and 130 connect output shaft 137
and 138 are driven by timing belts 133 and 134, respectively, which are placed over first and second drive output pulleys 135 and 136, respectively. Shafts 137 and 138 are suitably pivoted to classifier frame 50. 9th
As shown, spur gears 141 and 14
2 is the input side lap spring clutch 139 and 1
40 to the shafts 137 and 138, and meshes with the motor drive gear 143.

Lap spring clutches 139 and 140 are
Detent collars 144 and 145 each have three serrated pawls spaced 120 degrees apart. Solenoids S1 and S2 actuate pawls 147 and 148 to selectively disengage them from detent collars 144 and 145 to advance the turning gate drive.

During operation of the sorter, motor 150 and respective drive gears 141, 142 and 143 rotate continuously. Input drive pulley 13 by selective actuation of solenoid driven pawls 147 and 148
5 and 136 are moved intermittently. Each time solenoid S1 or S2 is actuated, its pawl 1
47 or 148 are temporarily lifted and the respective output timing belt pulleys 135 or 136 are rotated 120 degrees. This 120° rotation is
With a timing belt pulley ratio of 3:1,
Rotate cam unit 122 40 degrees. Due to the meshing gear configuration of the cam train, alternately adjacent cam units 122 rotate in opposite directions. However, each actuation of solenoid S1 or S2 causes the associated cam unit to rotate 40 degrees. Therefore, the upper cam row having eight cam units 122 returns to its original or home position with nine actuations of solenoid S1. That is, cam unit 122 rotates 360 degrees.

The home position of each cam row is home switch 15.
1 or 152, and each home switch is sensitive to a pin 153 or 154 associated with cam unit 122 of the upper cam row for bin 71B or cam unit 122 of the lower cam row for bin 71L. and then operate.

In operation, when the cam row is in its home position and sort is selected, solenoid 11
1 activates the diversion gate 90 for the first bin 71A. A sheet sensor 159 having a light source 160 and a photodetector 161 is provided to detect sheets 16 entering the bin. Seat is bin 71
When sensor 159 detects entry into A, the upper cam row is advanced 40 degrees by actuation of solenoid S1, causing turning gate 90 associated with second bin 71B to enter the seat path. When the upper cam row is positioned or indexed from its home position to the operative position of the second bin 71B, the turning gate shaft 91 associated with the second bin 71B
The cam member 122 rotates relative to the driven member 104 supported on the shaft. As a result, the turning gate 90 for the second bin 71B moves into the sheet feeding path, and the sheet to be fed next is turned into the second bin. When it is sensed that a second sheet has entered the second bin 71B, the upper cam row is indexed again and the next sheet enters the next bin. In this manner, sheets are received into the first nine bins 71A-71I.

The home position of the lower cam row is such that the turning gate 90 for the tenth bin 71J, controlled by the first cam unit 122 of the lower cam row, is in the actuated position to divert sheets from the vertical conveyor 63. selected. Therefore, to feed the tenth sheet into the tenth bin 71J, the upper cam row is indexed to its home position and the gate 90 associated with this cam row is inactivated. Solenoid 111 cannot be activated,
Diversion gate 90 associated with bin 71A is inoperative. When the tenth sheet entering bin 71J is sensed, the lower cam row advances 40 degrees to open the diversion gate 90 of the eleventh bin 71K, diverting the eleventh sheet into that bin. This operation is repeated until a sheet is placed in the 15th bin 71O.

Since the upper cam row has gone through a full cycle, this cam row has returned to its home position. The lower cam rows also advance in 40° increments to provide commonality of the components of both cam rows. Therefore, when the 14th sheet has finished entering the 14th bin 71N, the lower cam row is not at its home position. The lower cam row then moves until the switch 152 senses the lower cam row home position pin 154.
It is recycled by continuous activation of the second solenoid S2.

In the operation described above, the entire bin 71 is used. It is a distinctive feature of the invention that the first bin 71A is independently controlled. This is an important feature of the inventive sorter, especially if one wishes to sort only two sets, for example. Obviously, it is difficult to recycle the upper cam row between copy sheets when only two sets are to be sorted.

According to the invention, the first two sheets are classified as described above. The solenoid actuated gate for bin 71A opens for the first sheet to enter the first bin and then closes. The cam row is then indexed to open the gate to the second bin 71B, allowing the second sheet to enter the second bin. The next sheet received from copier 10 is directed to first bin 71A.

A controller (not shown) provides a signal to solenoid S1 which actuates the pawl to recycle the upper cam row to its home position. However, the time to perform this recycling is such that the next sheet is placed in the first bin 71.
It is longer than the time required to enter A. This is not a problem with the sorter of the present invention. That is, the first bin 71A operates independently of the remaining cam-driven bins 71B to 71I. Thus, the first bin gate 90 can return to the open position to strip the next sheet as the upper cam row recycles to its home position.

For any number of sets from 1 to 8 or 10 to 15, each cam row is not in its home position after receiving the last sheet of a given page; Once the last sheet is sensed, the respective home switches 151 and 1
52 must be recycled to the home position by successive actuation of the respective solenoids S1 and S2. The lower cam row is activated only when there are 11 or more sets of seats. That is, the diversion gate 90 for the tenth bin 71J opens when the lower cam row is in its home position.

The drive input to the cam train is fairly fast to reduce the time required to index the cam between sheet receipts. The cam must be indexed within the time allowed between sheet receptions. This inter-original time is extended by the high speed drive provided to the sheets 16 by the vertical transport 16, increasing the pitch or distance between incoming sheets. This allows sufficient time for the indexing cam to open the diversion gate 90 for the bin receiving the next sheet when the diversion gate for the previous bin closes.

The driven member 104 includes, as shown in FIG. It has a member 157.
Set screw 158 is used to adjust the operating position of turning gate 90. Although the pinch roll 70 is shown as consisting of a flat roll,
As shown in FIG. 12, ridges are preferably formed by known methods.

Vertical conveyance belt 61 and horizontal conveyance roll 40
As shown in FIG.
1 and is continuously driven. A gear 161 is attached to a shaft 162 that supports the drive pulley 76 for the vertical conveyor 61 and thus provides a direct drive force to the belt.

As shown in FIG. 3, a timing belt pulley 163 is attached to the end of drive shaft 162 and provides a drive connection to horizontal transport roll 40. As shown in FIG. As shown in FIGS. 3 and 10, a drive direction reversal timing belt tensioning device 170 is provided in an intermediate position. A first plate 171 is adjustable and supported on the frame 50 by screws 172. The low shaft 173 is connected to the plate 171 and the co-rotating gear 1
It is attached to 75. timing belt 1
76 is hung on pulleys 163 and 174.
A second plate 177 is pivotally supported around the shaft 173, and the second plate 177 is
71 by screws 178 so as to be adjustable. A low shaft 179 is attached to plate 177 and rotatably supports timing belt pulley 180 and co-rotating gear 181. gear 1
81 meshes with gear 175 to reverse the driving direction. Timing belt pulley 182 connects horizontal transport roll 4 via overrun clutch 64.
It is attached to the lower roll drive shaft 42 of 0.
A timing belt 183 is wrapped around pulleys 180 and 182 and is attached to horizontal transport roll 40.
It forms a driving connection to.

The tension in belts 176 and 183 is
Adjustments are made by plates 171 and 177 to which 74 and 180 are attached. first belt 176
The tension is adjusted by moving the inner plate 171, which is then fixed in position by screws 172. The tension in the second belt 183 is then established by rotating the plate 177 and pulley 180 about the axis of the first pulley shaft 173 and securing it in place to the inner plate 171 by screws 178. . In this manner, the tension on timing belts 176 and 183 can be easily established independent of the meshing engagement of gears 175 and 181.

The tension on timing belts 133 and 134 is determined using adjustable idler rolls 185 and 186, respectively. Pinch roll set 70
The normal force between is provided by a cantilever spring 187 supported by door frame 80 and bearing against the end of shaft 75. The driven member 104 is placed on the cam 123 by the weight of the tray 81 acting on the lever 93. Driven member 1 of 10th bin 71J
04 rests on the cam 123 by a torsion spring 189.

1-7 and 13, the outer row of vertical conveying pinch rolls 78 and drive belt 61 are disposed within a door-like frame assembly 80 that rotates. can be separated from the main sorter frame assembly 50, which supports internal pinch rolls 77 and turning gates 90. The door 80 is rotatable about the input drive shaft 162, so there is no need to interrupt the belt drive when rotating the door open. A folding link 190 is rotatably supported between the door and the main sorter frame to prevent the door from fully opening and to limit the extent to which the door can be opened.

As shown in FIG. 2, a latch mechanism 191 is provided to hold door 80 closed during operation of the device. Latch 191 consists of a pivot member 192 having a hook portion and a lever portion. The member 192 is attached to the lower shaft 193 by a spring 194.
A bullet is fired at the center. A locking pin 195 is provided on the main sorter frame 50 and engages the hook portion of member 192 when door 80 is closed. To open vertical transport door 80, the operator simply pulls on the lever portion of member 192 to lift the hook portion off pin 195, which causes the door to rotate open. A similar latching mechanism (not shown) is provided on the opposite side.

The sorter 11 can be easily attached and detached from the copying machine 10. for example,
1 and 5, the main machine frame 198 includes a bar 199 that is engageable with a hook-type latch 200 attached to the main sorter frame 50. Referring to FIGS. Main machine frame 19
8 is provided with a circular hole 201 and a slot (not shown) located in front of the hole 201. Adjustable ball-shaped members 202 or feet are attached to sorter frame 50 and adapted to engage the holes 201 and slots described above. Therefore, to attach the sorter frame 50 to the main machine frame 198, by inserting the ball-shaped feet 202 of the sorter 11 into the circular holes 201 and slots described above, the sorter will automatically align properly with the main machine frame. be consistent. Next, the sorter 11 is rotated about the ball member 202 relative to the bar 199. Hook type latch 200 has bar 1
99 counterclockwise and spring back to lock the sorting device to the bar 199. The latch is secured in place by screw 203. Appropriate electrical connections (not shown) are provided to connect the copier controller to the sorter and connect the drive motor and solenoids 35, 111, S1 and S2.
The switch 45, 15 detects the copying machine and supplies power to the copying machine.
1 and 152. This is common and is not a feature of the present invention.

The hook type member 204 is attached to the sorter frame 50.
and rests on a latch bar 199 of the main machine frame 198, so that the sorting device can only be rotated away from the main machine frame to a limited extent unless specifically desired. Thus, not only can the vertical transport door 80 rotate away from the main sorter frame 50, but the main sorter frame itself can rotate away from the main machine frame 198.

Next, other features of the sorter 11 of the present invention will be explained in detail with reference to FIG. Rotating roll 60 has a diameter of approximately 5.08 cm (approximately 2 inches) and serves to transfer sheet 16 from horizontal conveyor 30 to vertical conveyor 63 when sandwiched by feeding belt 61 . To obtain driving engagement between the feed belt 61 and the input drive pulley 76, the feed belt is under considerable tension. The feed belt therefore engages the rotating roll 60 with considerable force. If a jam occurs where a sheet remains between the rotating rolls 60 and the feed belt 61, the high friction surfaces of these belts make it extremely difficult to pull the sheet out of the nip.

To minimize this difficulty, the vertical transport door 8
The rolls are mounted in such a way that when the zero opens, the rotating roll 60 automatically slides away from the belt 61, reducing the gripping force between the roll and the belt. The rotating roll 60 is pivotally supported at each end in a sliding shoe 210 which is slidably engaged and supported within a slot 211 at each end of the door frame 80. The sliding shoe 210 has a tab 212 adapted to engage an adjustable stop pin 213 on the door frame 80 to limit the travel of the rotating roll 60 in the direction away from the belt 61. The shoe 210 also has a driven surface 214 that is positioned to engage a ramp 215 mounted to the main sorter frame 50. The solid line portion in FIG. 13 shows the state in which the vertical transport door 80 is in the operating position for sorting. Ramp 215 consists of an inclined ramp with a flat or horizontal portion. When the door is fully closed, the driven surface 214 of the shoe 210 rests on the horizontal portion of the ramp 215. In this position, the rolls 60 have maximum deflection of the feed belt and the tension in the feed belt is at the high value desired for sheet transport. When the door 80 is rotated open as shown by the dashed line in FIG.
0 carries the roll 60 downwardly and outwardly of the door frame, lowering the roll to the feed belt 61.
bias, thereby significantly reducing the forces between the belt and the rolls. The travel of the feed roll 60 is limited by the aforementioned engagement of the tab 212 of the sliding shoe 210 and the pin 213 attached to the sorter frame 80. By reducing the deviation of the supply belt 61 and reducing its tension through the movement of the rotating roll 60 as described above, jammed sheets can be easily removed from between the rotating roll and the feeding belt.

Furthermore, regarding FIG. 13, the seat guide
A second feature of the rotating roll assembly having the following will be described. This guide buffle 62 is provided to properly feed the sheet 16 into the nip between the first set of pinch rolls 70 as the sheet 16 emerges from the nip between the rotating rolls 60 and the feed belt 61. ing. The buttful 62 shown by the solid line is in the operating position, and at its upstream end, the buttful and the belt 6
1 is relatively wide to receive the sheet coming out of the nip of the rotating rolls, and at the downstream end the gap is relatively narrow to allow the sheet to be transferred to the nip of the pinch rolls 70. It is designed to be guided into one set of nips. If you try to pull the sheet from under the rotating roll 60, this narrow gap will cause the gap between the rotating roll 60 and the feeding belt 6.
This makes it difficult to remove sheets that are stuck between the two.

Thus, in a preferred embodiment of the invention, the guide buttle 62 is supported at each end by a rotating arm 220, which arm is connected to the axis 221 of the rotating roll.
It is designed to be able to rotate around the center. A torsion spring 222 is pinned at one end to the sliding shoe 210 and at the other end to the arm 220 of the rotating buttful 62.
It is pinned to , and the Batsuful is fired to the normally open position shown by the dashed line. In the open position of the buttful 62, the buttful and belt 6
The gap between 1 and 1 is wide, and the jam can be easily removed. Rotation of the buttful 62 to the closed or activated position, as shown in solid lines, is accomplished by a follower tab 223 attached to the buttle, which is coupled to a cam-like member 224 attached to the main sorter frame 50. engaged. When the door is closed, the driven tab 223 of the rotary buffle 62 engages the stationary cam 224 and is rotated to the operative position shown in solid lines. The engagement surfaces of tabs 223 and cams 224 are configured to provide a progressive cam action, as shown, to clear the obstruction from the turning gate 90 of the first bin 71A as the roll 60 is raised. Create the required approximately sinusoidal motion. The actuating surface of tab 223 has an inclined plane with a curved tip. The operating surface of cam 224 is convexly curved.

Another aspect of the jam removal of the sorting device 11 is that a flange X is provided at the end of the belt pulley 72. This flange has a large diameter and extends over the belt 61 surface. Therefore, sheet 16
When the sheet is pulled out of the nip between belt 61 and rotating roll 60, the sheet is pulled from pulley 72, not against the high-friction surface of the belt over pulley 72.
Slide toward flange X of 2. Therefore, sheet 1
The resistance on the sheet is reduced when pulling the 6 from the nip.

Next, the balancing mechanism 230 will be described with reference to FIGS. 3, 7, and 14. This balancing mechanism is used to balance the vertical transport door 80 as it rotates away from the main sorter frame 50 as shown. The counterbalancing mechanism includes two leaf springs 231 cantilevered to the main sorter frame 50 by screws 232. At the free end of each leaf spring is a curved lip 233.
Door 80 has rollers 234 at each end. Roller 234 is preferably made of nylon or similar material. The roller 234 is rotatably supported around a low shaft 235 attached to the door frame 80. The roller 235 engages the leaf spring 231;
When the door opens, it rolls toward the lip 233 along the spring. The leaf spring 231 is fixed to the main sorting device frame 50 by a plate member 236. Plate member 236 has a flared portion. Plate member 236 controls the deflection of spring 231 as it balances the door and prevents the spring from being overstressed.

The action of the rollers 234 on the leaf spring 231 allows the leaf spring to balance the door 80. When the door 80 opens, the leaf spring flexes as the roller rolls along the leaf spring 231 surface. In this way, the balance of the door 80 is effectively obtained,
Impact on the copying machine 10 when the sorter door 80 opens is prevented.

Next, FIGS. 5 and 15 show in detail the 10-bin type sorter 11' of the present invention. As mentioned above, the sorter of the invention is of modular construction and can be provided with any desired number of bins 71, and in particular can have a certain number of bins or more. . This is done in a single vertical column. When using 10 bins, the bins are arranged vertically, and when using 15 bins, the bins are also arranged vertically.

To achieve this modularity, the tenth intermediate bin 71J is made a full width bin, as described above. Diversion gate 9 for 10th bin 71J to 15th bin 71N of 15-bin type sorter
0 is driven by a lower cam row as shown in FIGS. 3 and 8. If only 10 bins are needed, lower cam row, bins 71J to 71N
The turning gate 90, drive gear 141, lap spring clutch 139, solenoid S1 and pawl 147 can all be omitted.

The driving force for the pulley 125 is provided by the drive pulley 1 used to provide power to the lower cam train in the above.
It is given from 36. timing belt 240
is applied to pulleys 125 and 136.
In the 15-bin type sorter 11, the solenoid S1
The control signal given to is given to the solenoid S2 in the 10-bin type sorter 11'.

In the 10-bin type sorter 11', since the turning chute 95 of the 15th bin 710 has moved to the 10th bin position, the turning gate 90 for the 10th bin 71J is not necessary. Therefore, when changing from a 15-bin type to a 10-bin type, there is no need to change the upper cam row for driving the turning gate. That is, these gates are driven in the same manner as in the 15-bin type described above. Therefore, the sorter of the present invention is uniquely modular in construction and allows the number of bins in the sorting column to be selectively varied to the desired number without increasing the complexity of the drive system. A high degree of commonality is achieved between the 10-bin sorter 11' and the 15-bin sorter 11. Other parts of the 10-bin type sorter 11' are
This is the same as described for the 15-bin type sorter 11.

The control device described above is not a feature of the invention. Any control device can be used. For example, desired control can be performed using any of the various control devices described in the above-mentioned patents;
Sequence signals necessary for the operation of the sorter 11 or 11' can be provided. All that is required is to give the activation signal for the first bin to the solenoid 111;
The actuation signals for the remaining bins are sent to solenoids S1 and S.
2 to obtain the desired sequence.

Accordingly, a sorter is provided having vertical rows of bins in which generally horizontally extending bins are supported in vertical alignment. To reduce the size of the device, a number of bins are placed in close proximity to each other and a bin inlet opening device is provided to widen the openings of the bins as sheets are fed into the bins. However, some bins are more widely spaced than compact bins. This combination of full-width bins and compact bins allows for a smaller construction than using full-width bins alone, while providing cost savings in variability and modularization of the sorter.

The first bin in the sorting column is driven independently of the other bins in the column, and the other bins in the column are driven by a sequential cam drive.

This unique combination of solenoid and cam drives avoids the efficiency reduction associated with small set classification. This is particularly important if the copier has an original handling device 250, as in FIG. 1, for loading and unloading originals from a platen. If such a device exists, the full efficiency of the copier can be maintained even if the original is replaced. Sorter 11 or 1 of the present invention
If 1' is used, it is necessary to recycle the cam row of the sorter to the home position, so copying and
There is no need to delay the cycle.

The above-referenced patents and publications specifically cited in the detailed description of this application are incorporated by reference.

According to the present invention, a sorting device and a copying machine have been obtained which fully satisfy the above-mentioned objects, means and advantages. Although the invention has been described in terms of specific embodiments, it will be apparent to those skilled in the art that various modifications and variations may be made. Accordingly, such changes and modifications are within the spirit and scope of the claims.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a sorter according to the present invention and a copying machine equipped with the sorter, FIG. 2 is a partially sectional side view of the sorter according to the present invention, and FIG. 3 is a schematic side view of a sorter according to the present invention. 4 is a front view of a sorter according to the present invention, FIG. 5 is a partially cutaway sectional view of a sorter according to the present invention, and FIG. 6 is an internal vertical conveyor and sheet turning of the sorter according to the present invention. FIG. 7 is a partial perspective view of the apparatus; FIG. 7 is an internal view of the vertical transport door of a sorter according to the invention; FIG. FIG. 9 is a partial rear view of a sorter motor drive device according to the present invention, FIG. 10 is a partial rear view showing a timing belt tensioning device for a sorter conveyance drive according to the present invention, and FIG. 11 is a partial rear view of a sorter motor drive device according to the present invention. FIG. 1 is a perspective view of the adjustable cam follower of the sorter;
Fig. 2 is a perspective view of the ribbed type conveyance roller of the sorter of the present invention, and Fig. 13 is a section showing a portion of the vertical conveyance door showing the operation of the rotary roll and sheet buttful cam device in the sorter of the present invention. FIG. 14 is a front view, FIG. 14 is a partial perspective view showing the operation of the vertical conveyance door balance of the sorter of the present invention, and FIG. 15 is a rear view of another embodiment of the 10-bin type apparatus of the present invention. 25, 81...Tray, 30...Horizontal conveyor, 31
... Turning gate, 61... Drive belt, 63... Vertical conveyor, 70, 77, 78... Pinch roll, 71...
Storage shelf or bin, 90... Turning gate, 92...
Turning finger, 93...Lever, 110...Bin index drive mechanism, 120...Modular cam drive device, 122...Cam unit, 159...Seat sensor.

Claims (1)

[Claims] 1. A plurality of storage shelves arranged in a vertical direction, a horizontal conveyance means for transporting copy sheets discharged from a copying machine through above the storage shelf group, and a horizontal conveyance means for receiving copy sheets from the horizontal conveyance means and transporting the sheets vertically downward. A sheet sorter equipped with a vertical conveyance means that turns the sheets and conveys the sheets downward to the entrance of a predetermined storage shelf.The sorter includes a main body that supports a group of storage shelves and a horizontal conveyance means, and and a door provided on the side facing the entrance, the door supporting the vertical conveying means, and having its lower end pivoted to the main body so that the door can be used to reach the entrance of each storage shelf. The vertical conveying means includes a feeding belt disposed so as to be able to convey copy sheets from the horizontal conveying means to the lowest storage shelf, and this feeding belt. a rotatable roll disposed to tension the belt and cooperate with the belt to deflect the copy sheet vertically downwardly from the horizontal transport means, the roll being configured to rotate when the door is closed against the body. The sheet sorter is in a position where a predetermined tension is applied to a feeding belt when the roll is in a position where a predetermined tension is applied to a feeding belt, and when the door is opened, the roll moves in a direction away from the belt so as to loosen the tension on the belt.