JPH0231470Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper conveyance device for a binding device, and in particular, a binding device that accepts sheets one by one, stacks them one after another, and discharges a group of bound sheets after binding the sheets in a binding device. The present invention relates to a paper conveyance device for a device.

An object of the present invention is to reduce the number of structural members and make the device more compact in providing a paper conveyance device for a binding device.

Another object of the present invention is to provide a paper transport device for a binding device that can transport paper reliably.

In order to achieve the above object, the present invention provides a paper transport roller close to the paper exit side of the paper transport plate,
Upper and lower pressing rollers are provided above and below this conveying roller to resiliently contact this conveying roller and rotate oppositely, and on the opposite side of the conveying roller from the side where the paper conveying plate is arranged. A paper holding plate is provided between the center of the transport roller and the abutting portions of the lower presser roller and the transport roller, and the paper holding plate holds the edge of the transport roller on the opposite side of the transport roller. The paper holding plate is elastically held so as to always be pushed upward, and a notch is formed in the paper holding plate, and a cutout is formed in the paper holding plate below the cutout. A discharge roller that is forcibly rotated is disposed above the paper holding plate, and is swung by a paper ejection signal to swing the paper holding plate downward through the paper on the paper holding plate, and the paper holding plate is swung downward through the paper on the paper holding plate. A paper ejection lever is provided that works together with the paper ejection lever to eject the paper, and the paper holding plate is provided with a holding lever that maintains the swinging position of the paper holding plate when ejecting the paper. The present invention is characterized by providing a release means for releasing the holding of the swing position.

Hereinafter, one embodiment of the present invention will be described based on the drawings. In the figure, reference numeral 1 denotes a machine frame, and this machine frame 1 is composed of side plates 2 that stand facing each other and a paper conveyance plate 4 that is horizontally disposed between the side plates 2. In this specification, "front" refers to the side of the paper insertion slot 3 that receives paper from a copying machine, etc., and refers to the right direction in FIG. 3.

A conveyance roller 6 is disposed between the paper conveyance plate 4 and a paper guide plate 5 disposed in front of the paper conveyance plate 4. The conveyance roller 6 is disposed by being mounted on a shaft between the side plates 2 so that the top portion of the conveyance roller 6 protrudes slightly more than the paper conveyance plate 4. Further, a notch 7 is formed near the rear of the paper conveying plate 4, and the top of the platen roller 8, which is horizontally mounted on the shaft between the side plates 2, slightly protrudes from this notch 7.

A stamping drum 9 is disposed above the platen roller 8 and is mounted between the side plates 2 and rotates oppositely to the platen roller 8 with a paper interposed therebetween to stamp a stamp.
This stamping drum 9 has a 1
It is connected to a motor 12 via a rotary clutch 11. Further, in front of the stamp drum 9, an ink roller 13 that contacts the stamp drum 9 and rotates in opposition to the stamp drum 9 is detachably disposed.

Further, above the front conveyance roller 6, a presser roller 14 is provided which rotates while facing and in contact with the front conveyance roller 6. This presser roller 14 is mounted between front swinging frame plates 15 that swing above the paper transport plate 4 using the stamping drum shaft 10 as a fulcrum. By disposing the presser roller 14 on the swing frame plate 15, it becomes easy to take out the paper when it becomes jammed on the transport plate 4.

A rear conveyance roller 20 similar to the front conveyance roller 6 is mounted on a shaft behind the paper conveyance plate 4 .

An upper press roller 21 and a lower press roller 22 are disposed above and below the rear conveyance roller 20, respectively, to resiliently contact the conveyance roller 20 and rotate in opposition to each other.

The upper presser roller 21 is pivoted between rear swing frames 23 which swing around the stamp drum 9 as a fulcrum above a sheet retaining plate 30, which will be described later. Therefore, like the front swing frame plate 15 described above, when a sheet becomes jammed on the sheet retaining plate 30, it is easy to take it out.

In this way, a paper edge alignment mechanism 50 is provided at the rear of the paper transport path constituted by the transport rollers 6, 20, presser rollers 14, 21, 22, and the paper transport plate 4.
A paper retention plate 30 having a
A binding device 70 that performs binding near the trailing edge of the sheets is disposed behind the sheet.

The paper holding plate 30 is connected to the machine frame 1 via a swing shaft 32 protruding from the rear of the side plate 31 of the paper holding plate 30.
The paper retaining plate 30 is swingably disposed between the side plates 2 of the paper retaining plate 30, and is always elastically lifted upward by a spring body (not shown). A notch 33 is provided approximately in the center of the paper holding plate 30, and below this notch 33, a discharge roller 34, which is driven by a chain from the rear conveyance roller 20 and forcibly rotated, is mounted on a bracket to a stay 35. It is arranged on a shaft via 36. Note that the swing angle of the paper retaining plate 30 is such that a portion of the discharge roller 34 can protrude from the notch 33.

Then, the upper part of the paper holding plate 30 is released via the locking body 38 by the plunger suction of the solenoid 37 excited by the paper discharge signal, and is forcibly swung downward by the elastic force of the coil spring 39. A paper discharge lever 40 is provided which swings the paper retention plate 30 downward via the paper on the paper retention plate 30 and discharges the paper in cooperation with the discharge roller 34. The paper ejection lever 40 has one end pivoted to a shaft 41 mounted on the rear swing frame 23, and the opposite end of the paper ejection lever 40 cooperates with the ejection roller 34 to hold a group of sheets in between. A discharge presser roller 42 that rotates oppositely is mounted on the shaft via. Further, the upper presser roller 21 is provided at the center of the paper ejection lever 40 so as to slightly swing the paper ejection lever 40 with a small amplitude when the paper ejection lever 40 swings downward.
A cam contact portion 44 is provided that contacts an eccentric cam 43 fixed to the shaft 21A.

Further, as shown in FIG. 4, the paper holding plate 30 is provided with a swing holder 45 that holds the swing when the paper discharge lever 40 swings downward. This swinging holder 45 is comprised of a substantially dogleg-shaped lever having a locking protrusion 47 that locks into a notch 46 formed on one side edge of the paper holding plate 30. It is attached via a swing shaft 49,
The end opposite to the end where the locking protrusion 47 is formed is engaged with a paper retaining plate return cam 48 fixed to the stamp drum shaft 10.

Therefore, when the solenoid 37 is excited by the paper discharge signal, the locking body 38 swings, and this swing releases the locking body 38 of the paper discharge lever 40, and the elastic force of the coil spring 39 causes the locking body 38 to swing downward. The paper retention plate 30 and the paper on this paper retention plate 30 are both swung downward, and the discharge presser roller 4 of the paper discharge lever 40 is moved downward.
2 and the paper discharge roller 34, the paper is conveyed to the contact portion between the rear conveyance roller 20 and the lower presser roller 22.

Also, when the paper is conveyed to the specified position,
An eccentric cam 43 fixed to the shaft 21A of the upper presser roller 21 rotates and comes into contact with a contact portion 44 provided at the center of the paper ejection lever 40. When the eccentric cam 43 comes into contact with the contact portion 44, the paper ejection lever 40 is pushed upward to the position shown by the two-dot chain line in FIG. 4 or the position shown in FIG.

In this way, the rear conveyance roller 20 that conveys the paper to the paper holding plate 30 and the presser rollers 21 and 22 that contact the upper and lower parts of this conveyance roller 20, respectively, swing downward and move the front edge of this to the rear conveyance roller. 20 and the paper retaining plate 30 located at the contact portion of the lower presser roller 22 to form a paper folding conveyance system, there is no need to reversely rotate the conveyance rollers of the system as in the conventional folding conveyance system. The motor control and its configuration can be simplified.

The paper edge alignment mechanism 50 includes front and rear edge alignment means 51 for aligning the front and rear edges of the paper, and left and right edge alignment means 52 for aligning the left and right edges of the paper.

As shown in FIGS. 5 and 6, the front and rear edge aligning means 51 includes a rear peripheral edge of the rear conveyance roller 20 and a paper locking body 53 disposed at a distance from the rear peripheral edge by the length of the paper in the front and rear direction. and a forced guide plate 54 that swings vertically on the side of the rear conveyance roller 20 and brings the front edge of the sheet into contact with the circumferential surface of the rear conveyance roller 20 to ensure that the sheet is placed on the retention plate 30. Consists of. The forced guide plate 54 is pivoted to the rear swing frame 23, and a coil spring 55 is disposed on the forced guide plate 54 to elastically push the guide edge 54A downward at all times. It is designed to move.

Therefore, the paper can be reliably conveyed to the locking body 53, and as a result, the front and rear edges of the paper can be aligned. That is, the rear conveyance roller 20
The paper is conveyed by the cooperative operation of the rear conveyance roller 20 and the upper presser roller 21, and when the leading edge of the sheet passes through the contact area between the rear conveying roller 20 and the upper pressing roller 21, the leading edge of the sheet is normally conveyed due to its own weight. roller 2
0 and is pushed out in the conveying direction.
However, since the weight of the paper is small, the paper transport after the rear transport roller 21 and the upper transport roller 22 come out of contact becomes uncertain, but this problem can be solved. The paper can be forcibly fed by the rear conveyance roller 20 and the forced guide plate 54. Therefore, the front and rear edges of the paper can be reliably aligned.

As shown in FIGS. 7 and 8, the left and right edge aligning means 52 is configured by bending one end to form a sheet aligning claw 56 and forming an engaging hole 57 at the other end. A pair of paper alignment plates 59 are provided on the lower surface of the retention plate 30 and are movable in the left and right direction via the guide elongated holes 58, and a swing pin 60 that fits into and engages the engagement hole 57 is provided at both ends. , a crank plate 65 having a swinging body 62 pivotally attached to a base plate 68 via a swinging shaft 61 at the center between the swinging pins 60, and a crank pin 64 that engages with a swinging elongated hole 63 of the swinging body 62.
and a motor 66 to which this crank plate 65 is fixed.
It consists of Note that the swing elongated hole 63 is connected to the swing body 62.
The hole is a long hole whose center line is a line segment that is perpendicular to the line passing through the pair of swing pins 60 and passes through the center of the swing shaft 61. Further, 67 in the figure is a motor switch that automatically stops the paper alignment motor 66.
The sheet alignment claw 56 is controlled to move back and forth once.

Therefore, when the motor 66 is rotated to align the left and right edges of the paper, the swinging body 62 swings through the crank plate 65, and the swinging of the swinging body 62 causes the swinging pin 60 and the engagement hole 57 to be aligned. The paper alignment plate 59 connected to the paper alignment plate 59 is moved in its length direction, and this movement pushes the left and right edges of the paper to align the left and right edges of the paper.

The binding device 70 includes a stapler 71 that closes the trailing edge of a sheet, a perforator 72 that punches a score mark in the trailing edge of the sheet by a dot array of a plurality of holes imitating the display of predetermined contents, and the stapler 7.
1 and a drive mechanism 73 that drives each of the perforators 72.

In this binding device 70, for example, as shown in FIGS. 9 to 11, a drive shaft 75 that rotates once in response to a drive signal is mounted on a machine frame 74 of the binding device 70, and this drive shaft 75 includes a perforator pressing cam 76 and Perforator removal cam 77 and crank pin 78
and a push-down bar 7 that is in contact with the push-down cam 76.
9 is pivotally supported in a machine frame 74 so as to be able to move up and down, and a push-up bar 80 is in contact with this push-down bar 79 and the extraction cam 77.
The perforator 72 is
A push lever 82 connected to the needle stand 72A and in contact with the crank pin 78 is pivoted to the machine frame 74 and can swing freely in the vertical direction.
The push roller 83 is elastically held, and the push roller 83 is configured to abut against the back of the stapler 71. It is assumed that the sheet locking body 53 of the binding device 70 is used as the sheet locking body 53.

Next, the operation of the present invention will be explained. A paper outlet of a copying machine (not shown) is connected to the paper insertion port 3 of the device of the present invention, and the copying machine sequentially copies copies of the original book from the last page to the first page. Through this copying, the copies of the original ledger are sequentially introduced into the paper insertion slot 3 after a certain period of time.

The copy introduced into the paper insertion slot 3 is transported on the paper transport plate 4 by the cooperation of the front transport roller 6 and the presser roller 14, and the paper is checked by the front paper detection sensor 90 provided in the paper insertion slot 3. After a certain period of time has elapsed, the stamping drum shaft 10 is rotated to stamp the authentication stamp 17 at a predetermined position on the paper. This stamp drum 9
A seal is stamped by the rotation of
1 and is guided to the contact part with 1.

Then, the stamped paper is transferred to the rear conveyance roller 20.
The paper is conveyed to the paper holding plate 30 in cooperation with the paper holding plate 30.
Note that when the front edge of the paper leaves the rear conveyance roller 20, the guide edge 54A of the forced guide plate 54 makes sure that the front edge of the paper comes into contact with the circumferential surface of the rear conveyance roller 20, and the rear edge of the rear conveyance roller 20 is moved. Bring the trailing edge of the paper into contact with the peripheral surface.

The next copy sheet is also introduced onto the paper holding plate 30 in the same manner as one copy sheet. However, certification stamp 17
Since only the last page, that is, the first sheet of copy paper, is required, the stamp drum 9 does not rotate and therefore no authentication stamp is stamped.

Note that the front and rear edges of the paper are aligned at the same time as the paper is placed on the paper holding plate 30, but after this, the motor 66 of the left and right edge alignment mechanism 50 is turned on to align the left and right edges. becomes. By performing this left and right edge alignment every time a sheet is introduced, edge alignment of the group of sheets can be easily and reliably performed. This alignment of the left and right edges is performed by measuring the elapsed time after the trailing edge of the paper passes over the rear paper detection sensor 91, which is a photo sensor provided just before the rear conveyance roller 20, using a control mechanism. It shall operate when the time is right.

When the front paper detection sensor 90 detects that the number of sheets inputted in advance has been inserted, the binding device 70 operates to drive a staple along the trailing edge of the group of sheets and use it as a counter mark. Drill the holes. Thereafter, the solenoid 37 is energized by the control mechanism, and the paper ejection lever 40 swings downward. This downward swinging of the paper ejection lever 40 causes the paper holding plate 30 to swing downward through the paper, and is locked to the locking protrusion 47 of the swinging holder 45 to hold this downward swinging. . At the same time, the ejection press roller 42 and ejection roller 34 of the paper ejection lever 40 work together to introduce the group of sheets to the abutment area between the rear conveyance roller 20 and the lower press roller 22. The rear conveyance roller 20 and the lower presser roller 22 work together to convey the sheet group into a sheet group receiving tray 18 disposed below the sheet conveyance plate 4.

Note that paper detection sensors 90 and 91 provided close to the transport rollers 6 and 20 are used to count the number of sheets from the copying machine and also to detect paper jams in the transport path.

The present invention is constructed as shown above, and the conveyance roller 20 is provided close to the paper exit side of the paper conveyance plate 4.
Above and below this conveyance roller 20, an upper presser roller 21 and a lower presser roller 21 are provided which resiliently contact the conveyor roller 20 and rotate in opposition to each other.
A paper holding plate 30 is disposed on the opposite side of the carrying roller 20 from the side on which the paper carrying plate 4 is disposed, and this paper holding plate 30 aligns the edge of the side of the carrying roller 20 with the center of the carrying roller 20. The paper holding plate 30 is made to be able to swing freely between the contact portions of the lower pressing roller 22 and the conveying roller 20, and is elastically held so as to always be pushed upward. Board 30
A notch 33 is formed in the notch 33, and a discharge roller 34 that is forcibly rotated is disposed below the notch 33, and above the paper retention plate 30, the paper retention plate 30 is swung downward by a paper discharge signal. and a paper ejection lever 40 that works together with the ejection roller 34 to eject the paper,
The paper holding plate 30 is provided with a swinging holder 45 for holding the swinging position of the paper holding plate 30 during paper ejection, and the swinging holder 45 is provided with a release means 48 for releasing the holding of the paper holding plate 30. Because of this provision, a folded paper transport path can be constructed with a simple and compact configuration, and when used in conjunction with the binding device 70 etc., a suitable paper transport path can be provided.

In particular, the paper holding plate 30 is arranged around the edge of the conveyor roller 20 on the side opposite to the conveyor roller 20 as a fulcrum.
Since the edge of the zero side is made swingable between the center of the conveyance roller 20 and the abutting portions of the lower presser roller 22 and the conveyance roller 20, the paper conveyance path is folded back by the paper retaining plate 30. Can be formed.
Therefore, compared to the case where the conveyance path is straight, the entire conveyance path can be made more compact. In addition, the fact that the paper conveyance path has a folded shape makes it possible to arrange the binding device 70 at the folded position.
Devices can be arranged efficiently, making the overall configuration even more compact.

In addition, a notch 33 is formed in the paper retention plate 30,
A discharge roller 34 that is forcibly rotated is disposed below this notch 33, and above the paper retention plate 30 is swung by a paper discharge signal to move the paper retention plate 30 downward through the paper on the paper retention plate 30. a paper ejection lever 4 that swings to the ejection roller 34 and ejects the paper in cooperation with the ejection roller 34;
0, it becomes easy to bind the stacked sheets retained on the paper retaining plate 30 with a binding device or the like and then discharge them.

In addition, at this time, the paper ejection lever 40 is
By swinging an eccentric cam 43 fixed to one shaft, it is possible to intermittently discharge a plurality of bound copies of certified copies. Therefore, when the eccentric cam 43 swings upward, the paper misalignment that occurs between the paper directly in contact with the discharge presser roller 42 and the discharge roller 34 and the other paper sandwiched between these papers can be released. This makes it possible to completely prevent paper damage.

In addition, the paper retention plate 30 has this paper retention plate 30.
Since the swinging holder 45 is provided to hold the swinging position when paper is ejected, the swinging holder 45 is fixed when the paper group is ejected.
This allows the paper holding plate 30 to be held and the ejection of the paper group to be ensured.

Moreover, since the swinging holder 45 is provided with a release means 48 for releasing the holding of the paper retention plate 30, the paper retention plate 30 can be returned to its original position by this release means 48 after the paper group is ejected. This release means 48 enables continuous automatic operation.

As explained above, according to the present invention, it is possible to reduce the number of structural members and make the device more compact.Moreover, sheets are temporarily stored and stacked one after another to form a group of sheets, and this group of sheets is bound by a binding device. This allows the paper to be discharged one book at a time, and has an extremely beneficial effect in practice.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing an embodiment of the present invention;
Figure 2 is an overall plan view with the same parts omitted; Figure 3 is a longitudinal sectional view with the same parts omitted; Figure 4 is an overall longitudinal sectional view with some parts omitted showing paper ejection; Figures 5 and 6 are the front and rear edges of the paper. 7 is a plan view of essential parts showing alignment of left and right edges of paper, FIG. 8 is a plan view of the same, FIG. 9 is a front view of the paper binding device, FIG. 10 is a side view, and FIG. 1
Figure 1 is a sectional view of the same. 1...Machine frame, 2...Side plate, 3...Paper insertion slot,
4... Paper transport plate, 5... Paper guide plate, 6... Front transport roller, 7... Notch, 8... Platen roller, 9... Stamp drum, 10... Drum shaft, 11
...1 rotation clutch, 12...motor, 13...
Ink roller, 14...Press roller, 15...Front swing frame plate, 17...Certification stamp, 18...Paper group tray, 20...Rear conveyance roller, 21...Upper press roller, 21A...Shaft , 22... Lower presser roller, 23... Rear swing frame, 30... Paper retaining plate,
31... Side plate, 32... Swing shaft, 33... Notch,
34...Discharge roller, 35...Stay, 36...
Bracket, 37... Solenoid, 38... Locking body, 39... Coil spring, 40... Paper ejection lever,
41...shaft, 42...discharge presser roller, 43...
Eccentric cam, 44...cam contact portion, 45...swinging holder, 46...notch, 47...locking protrusion, 48...
... Return cam, 49 ... Swing shaft, 50 ... Paper edge alignment mechanism, 51 ... Front and rear edge alignment means, 52 ...
Left and right edge aligning means, 53...Paper locking body, 54...
... Forced guide plate, 54A... Guide edge, 55...
... Coil spring, 56 ... Paper alignment claw, 57 ... Engagement hole, 58 ... Guide slot, 59 ... Paper alignment plate, 60 ... Swing pin, 61 ... Swing shaft, 62 ...
... Rocking body, 63 ... Rocking slot, 64 ... Crank pin, 65 ... Kuninck plate, 66 ... Motor, 6
7... Motor switch, 68... Board, 70...
Binding device, 71... Stapler, 72... Perforator, 72A... Needle stand, 73... Drive mechanism, 74... Machine frame, 75... Drive shaft, 76...
Perforator push-down cam, 77... Perforator removal cam, 78... Crank pin, 79... Push-down bar, 80... Push-up bar, 81... Pull-out frame, 82...
...Pushing lever, 83...Pushing roller, 90, 91
...Paper detection sensor.

Claims (1)

[Scope of utility model registration request] A paper conveyance roller is provided close to the paper exit side of the paper conveyance plate, and above and below this conveyance roller, an upper presser roller and a lower presser roller are provided that resiliently contact the conveyance roller and rotate in opposite directions. A paper holding plate is disposed on the opposite side of the carrying roller from the side where the paper carrying plate is disposed, and this paper holding plate is located between the center of the carrying roller and the contact portions of the lower presser roller and the carrying roller. The edge of the conveying roller is made to be able to swing freely around the opposite edge of the conveying roller as a fulcrum, and this paper holding plate is held elastically so as to always be pushed upward. In addition, a cutout is formed in the paper holding plate, and a discharge roller that is forcibly rotated is arranged below the cutout, and a discharge roller that is rotated forcibly is arranged above the paper holding plate, and is rotated by a paper ejection signal to remove the paper on the paper holding plate. A paper ejection lever is provided which swings the paper holding plate downward through the paper and ejects the paper in cooperation with the ejection roller, and the paper holding plate is provided with a swinging position of the paper holding plate when the paper is ejected. 1. A paper conveying device for a binding device, characterized in that a holding lever is provided for holding the paper, and the holding lever is provided with a release means for releasing the holding of the swinging position of the paper holding plate at the time of paper ejection.