JPH058577A - Sheet binder - Google Patents

Abstract

PURPOSE:To charge a wire easily to a stapler automatically stitching a sheet on a tray by the wire. CONSTITUTION:A stapler holding member 5 is installed integrally to a guide member 16, which can be moved to the position of sheet binding and the detachable position of a stapler. The stapler 1 is mounted detachably to the stapler holding member 5 by the engagement and detaching of an engaging member 25. The stapler 1 is removed from the stapler holding member 5, thus easily supplying the stapler 1 with a wire 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet binding device that staples sheets stacked on a tray.

[0002]

2. Description of the Related Art Conventionally, an automatic stapler device is used for binding (clinching) a bundle of sheets on which images are formed by a copying machine as an image forming device on a tray.
This stapler device is used specially developed to install the stapler device itself in the image forming apparatus,
Therefore, there is a problem that the stapler device becomes expensive and the shape becomes large.

Therefore, it has been attempted to construct an inexpensive and compact automatic stapler by using a stapler commercially available for office work as a stapler.

FIG. 19 shows a plurality of tray (bin) parts of a sorter 101 to which a conventional stapler device 100 is applied. In the figure, a plurality of sheets P of which images are formed by a copying machine (not shown) are sorted on a plurality of trays B and are discharged by a discharge roller pair 106. The lead cam 103, which is integral with the support shaft 102, engages with the rollers (105) provided on the side portions of each tray B, and the sheet P
The tray B at the position where the paper is discharged is sequentially opened. The tray B is inclined by about 30 ° to 40 ° in order to improve the stackability of the sheets discharged from the copying machine. For this reason, the stapler 100 for binding the sheets P stacked on the tray B also has a tilt of the tray B of about 30.
They are arranged in a tilted state of about 40 ° to 40 °.

In FIG. 20, a guide rail 111 fixed to a frame 110 is provided with a stapler holding member 112a integral with a guide member 112 so as to be slidable in the directions of arrows 113 and 115. The staple puller 1a of the stapler 1 is engaged with the locking member 116 provided on the stapler holding member 112a, and the leading end of the substrate 1b of the stapler 1 is engaged with the locking portion 116 provided on the stapler holding member 112. As a result, the stapler 1 is held by the stapler holding member 112. The stapler 1 has a staple case 1c pivotally attached to the base plate 1b by a support shaft 90, and a pressing member 1d for punching out the staples 2 in the casing 1c one by one to perform a binding operation.

A cam 117 and a flag 119 integral with the cam 117 are rotatably mounted on the frame 110. The sensor 120 detects the position of the slit of the flag 119 to detect the home position of the cam 117. The driven lever 122, whose base is pivotally attached to the frame 110 by the support shaft 121, is pressed against the cam 117 via the cam follower 125 by the urging force of the tension spring 123. The claw member 126 provided at the free end of the driven lever 122 engages with a latch portion (not shown) provided at the rear end (left end in the figure) of the stapler holding member 112 to move the stapler 1 to the home position (almost the same as the frame 110). Hold the same position). The stapler 1 shown in FIG. 20 shows a state in which the stapler 1 is pulled out from a predetermined home position to the arrow 115, and the pressing member 1d of the stapler 1 is rotated as shown to open the staple case 1c. The needle 2 is loaded into the needle case 1c.

[0007]

When the stapler 1 is moved from the home position to the release position (see FIG. 20) for loading the staple 2 in the stapler unit 100, the stapler (stapler) 1 itself is moved. As described above, since the needle 2 is largely tilted, it is difficult to load the needle 2, and when the needle 2 is accurately loaded without dropping, the user bends his / her back or bends the knee. The user's own face and staple unit 10
Since the work has to be performed close to 0, there is a problem that the workability of needle loading becomes extremely poor.

Further, in the above-mentioned structure of the sheet binding apparatus, since the needle 2 can be clinched only at a certain predetermined angle and a certain position with respect to the sheet P discharged from the main body of the copying machine, the staple binding function has a sorter function. Despite the fact that it was equipped with, there was a drawback that its performance was limited.

Further, using a commercially available stapler as a stapler has a great cost advantage, but on the other hand, since the number of staples that can be loaded in the stapler is limited, the stapler 2 for the stapler is loaded. To do more often. Therefore, every time the user tries to load the needle 2, the user has to perform a troublesome operation of searching for a small stapler or going to pick it up.

Therefore, it is an object of the present invention to provide a sheet binding device in which a stapler or a stapler holding member is detachably attached to the sheet binding device and the staple exchanging property with respect to the stapler is improved.

[0011]

The present invention has been made in view of the above circumstances and includes at least one tray (B) on which sheets (P) are stacked and stored, and the tray (B).
A stapler (3) having a stapler (1) for staple-stitching sheets (P) stacked on the stapler holding member (5) for holding the stapler (1).
And a guide member (16) which is integrated with the stapler holding member (5) and which can move the stapler (1) forward and backward with respect to the sheet binding position, and the stapler (1) is fixed to the stapler holding member. It is characterized by being removable in (5).

Further, the stapler (1) is engageable with the stapler holding member (5), and has a locking member (25) provided on the stapler holding member (5).

Further, the stapler holding member (5) is
The stapler (1) is characterized by having a needle storing means (60) for storing the needle (2).

[0014]

Based on the above construction, the stapler (1) held by the stapler holding member (5) integrated with the guide member (16) advances to the sheet binding position by the movement of the guide member (16), The sheets (P) stacked on (B) are stapled. When the staples (2) in the stapler (1) are lost and the staples (2) are replenished by repeating this staple binding operation, the stapler holding member (5) is moved to a position where the stapler (1) can be attached and detached, It is easy to remove and load the needle (2) on it. Further, the attachment and detachment of the stapler (1) with respect to the stapler holding member (5) can be easily performed by operating the locking member (25) provided on the stapler holding member (5).

The needle (2) for the stapler (1)
The replenishment is easily performed by removing the needle case (59) accommodated in the staple accommodating means (60) of the stapler holding member (5), thereby improving the workability of the staple replenishment.

The reference numerals in parentheses are for reference to the drawings and do not limit the structure of the present invention.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows a sorter 81 to which the sheet binding device (stapler unit) 3 of the present invention is applied. The sheet P on which an image is formed by the image forming apparatus 80
Is guided into the sorter 81 by the guide plate pair 82,
The roller pair 83 conveys it onto the tray (bin) B of the sorter 81. The sorter 81 has a plurality of trays B, and is vertically moved by a motor 90.
By this vertical movement, the bin roller 86 provided on the tray B is driven by the lead cam 87, the tray B portion opposing the roller pair 83 is expanded, and the sheet P is easily carried in. The sheets (sheet bundle) P sorted and stacked on each tray B are staple-stitched by the stapler in the stapler unit 3 as described later.

FIG. 3 shows the details of the stapler unit 3.

In the figure, the frame 12 of the stapler unit 3 has a mounting piece 13 integral with a guide rail 13.
a is fixed by a screw 15. A guide member 16 is attached to the guide rail 13 so as to be movable in the directions of arrows 17 and 19. As shown in FIG.
As shown in FIG. 4, the micro switch 20 is fixed. The switch 20 is turned on / off by a protrusion 21 fixed to the guide member 16, and when the switch 20 is turned on by the protrusion 21 as shown, the guide member 16 is at the home position. And

A stapler holding member 5 is integrally provided on the rear side (left side in the figure) of the guide member 16. A latch holder 22 having a latch portion 22a is fixed to the stapler holding member 5 with a screw 23. On the front side of the stapler holding member 5, as shown in FIG. 1, a pair of holding pieces 5b having elasticity and a locking portion 5a are provided. Further, a holding member 26 that slidably holds the locking member 25 is provided in the recess 5c formed in the rear portion of the stapler holding member 5.
The holding member 26 is biased forward (in the direction of arrow 17) by a compression spring 27 provided inside the holding member 26.

The stapler 1 is a substrate 1b which is a lower jaw.
And the needle 2 is housed and the base portion is supported by the support shaft 11 on the substrate 1b.
It has a needle case 1c pivotally attached to, and a pressing member 1d having a base portion pivotally supported by the support shaft 11 and pressing the needle case 1c toward the substrate 1b side. With the sheet P positioned between the substrate 1b and the needle case 1c, the pressing member 1d
By pressing the needle case 1c against the substrate 1b by
The sheet P is stapled.

The stapler 1 holds the substrate 1b with a holding piece 5
It is set on the substrate 1b while being sandwiched by b. Further, the leading end 1e of the substrate 1b is attached to the locking portion 5a of the stapler holding member 5.
The needle puller 1a that is in contact with the
The stapler 1 is firmly held by the stapler holding member 5 by pressing the stapler 1 with the locking member 25.

In FIG. 3, an actuating cam 30 and a flag 31 having a slit 31a are integrally fixed to a rotatable support shaft 32 on the frame 12. A driven lever 35 whose base is pivotally supported by the frame 12 on the frame 12.
Is urged in the direction of arrow 37 by the elastic force of a tension spring 36 whose both ends are locked by the frame 12 and the driven lever 35, and the roller 39 pivotally supported by the driven lever 35 is actuated by the urging force. It is pressed against the cam 30.

A claw member 40 is pivotally supported by a shaft 40a at the lower end of the driven lever 35, and the claw of the claw member 40 is engaged with the latch portion 22a of the latch holder 22. As shown in FIG. 3, the roller 39 of the driven lever 35 causes the operation cam 3 to move.
The state of being located in the small diameter portion (center portion) of the concave portion 30a of 0 is the home position of the actuating cam 30 and the driven lever 35, and this state is detected by the slit 31a of the flag 31 being located in the sensor 48. There is. Further, the driven lever 35 and the stapler holding member 5 interlocked with the driven lever 35.
Is in the home position shown in FIG. 3, the stapler 1 is also in the home position shown in FIG.

In FIG. 6, an eccentric cam 41 is fixed to the support shaft 32 pivotally supported by the frame 12 and is integrally formed with the actuating cam 30. The rotation of the motor 42 fixed to the frame is transmitted to the eccentric cam 41 and the operation cam 30 via the pinion 43a, the two-step gear 43b and the gear 43c integrated with the support shaft 32. Frame 1
2, a base portion of the swing member 45 is pivotally supported by a support shaft 45a, and is biased counterclockwise in FIG. 6 by a spring (not shown), and the swing member 45 is provided by this biasing force. The roller 45b is in pressure contact with the eccentric cam 41.

The long hole 4 formed at the free end of the rocking member 45.
A shaft 46a that pivotally supports the pressing roller 46 is loosely fitted in 5c, and a tension spring 47 is stretched between the shaft 46a and the lower end of the swing member 45. As shown in FIG. 3, a tension spring 49 is stretched over the frame 12 so as to straddle the guide member 16. The tension spring 49 has a guide member 16 at the home position.
The pin 16a fixed to the guide member 16 is pressed.
Is urged in the direction of arrow 19.

Next, the operation of the stapler unit 3 will be described.

When the stapler 1 is at the home position, it is detected that the projection 21 of the guide member 16 integral with the stapler holder 5 is in the home position by turning on the micro switch 20 as shown in FIG. Further, the home position of the actuating cam 30 and the eccentric cam 41 is detected by detecting the slit 31a of the flag 31 by the sensor 48.

A driver (shown in the figure) provided in the sorter 81 is operated by a stapling instruction input from the copying machine (image forming apparatus) 80 or a stapling instruction by turning on a staple button (not shown) provided in the sorter body 81. A signal is sent to the staple motor 42 to start rotating.
The rotation of the staple motor 42 causes the actuating cam 30 and the eccentric cam 41 to rotate in the directions of the arrows.

As shown in FIG. 3, the actuating cam 30 has the central portion of the recess 30 as the home position, and this position is zero.
If the radius is r1 and the radius is r1, the radius is r2 from 45 ° to 315 ° of the actuating cam 30, and the radius is r1 again at 360 °. When the roller 39 is positioned at the large diameter portion (radius r2) by the rotation of the actuating cam 30, the driven lever 35 moves in the direction of the arrow 37
The stapler holding member 5 and the guide member 16 are moved in the arrow 17 direction to move the stapler 1 forward to the operating position (sheet binding position).

On the other hand, the eccentric cam 41, which rotates integrally with the actuating cam 30, has a support shaft 32, which is the center of rotation, at a position eccentric by r4 from the center of a disk of radius r3. The home position (small-diameter portion) of the eccentric roller 41 is at a position r3-r4, and a position 180 ° from this position is r3 + r4, which has the maximum outer diameter.

The roller 45b is pressed by the rotation of the eccentric cam 41, which causes the swinging member 45 to rotate about the support shaft 45 in the arrow direction. During this rotation, the pressing roller 4
6, the needle case 1c is rotated in the arrow direction via the pressing member 1d of the stapler 1 as shown in FIG. As a result, the end portion of the sheet P between the substrate 1b and the staple case 1c is stapled. When the eccentric cam 41 rotates by 180 ° or more, the pressing member 1d of the stapler 1 and the staple case 1b return to the original upper position. When the actuating cam 30 rotates to the home position (position at an angle of 0 °), the stapler 1 retracts from the actuating position shown in FIG. 7 to the home position shown in FIG.

As described above, the operating cam 30 and the eccentric cam 4
By integrally forming 1 on the same shaft 32 and rotating the same, the above-described operations are performed in conjunction with each other. That is, the operating cam 3
When the stapler unit 3 rotates 0 and the eccentric cam 41 makes one rotation, the stapler unit 3 achieves a series of operations of advancing the stapler 1, clinching the sheet P, and returning to the home position with one stapler 42. be able to.

Next, the loading of the stapler 1 with the staple 2 will be described. The claw member 40 is engaged with the push latch 22a, and the push latch 22a is the latch holder 2
It is patched to 2. Stapler holding member 5
Is urged in the direction of arrow 19 by the spring 49, the push latch 22 is released from the claw member 40 by pressing the wall surface 5d of the stapler holding member 5. By moving the release stapler holding portion 5 in the direction of arrow 19, the stapler 1 is pulled out to the stapler attachment / detachment position as shown in FIG. In this state, the locking member 25 is moved in the direction of the arrow as shown in FIG. 8 to unlock the staple pull-out piece 1a of the stapler 1.
Can be removed upward as shown by the arrow.

When the stapler 1 is removed from the stapler unit 3, the stapler 1 can be easily loaded with the needle 2 without taking an unreasonable posture. The stapler 1 after the staple loading can be easily performed by setting the stapler holding member 5 and then locking the staple pull-out piece 1a by the locking member 25.

FIG. 10 shows another holding means for the stapler 1. In the figure, inside the recess 5c of the stapler holding member 5, a claw member 50 having a claw at its free end and having elasticity is fixed. In this holding member 5, the substrate 1b of the stapler 1 is replaced by the stapler holding member 5
The stapler 1 can be easily attached to the stapler 1 by pushing and holding it between the engaging portion 5a and the claw member 50, and similarly, the stapler 1 can be easily removed by the reverse operation.

In the present embodiment, the stapler 1 is detachably attached to the stapler holding member 5, so that FIG.
In addition to the automatic staple binding at the corners of the sheet bundle P0 as shown in Fig. 9, it is also possible to staple at two arbitrary positions with the stapler 1 removed as shown in Fig. 9 (b). It is possible to expand the variety of functions.

11 to 14 show a second embodiment of the sheet binding device according to the present invention.

In the figure, the stapler 1 is patched to the stapler holding member 5 by locking the staple pull-out piece 1a to the locking portion 5e of the stapler holding member 5A and fitting the substrate 1b into the pressing member 1d. There is. Guide member 16
A holding member support base 51 is fixedly mounted on the. A shaft of a stopper 52 is mounted on the holding member support base 51, and an orthogonal pin 52a is formed at an end of the shaft. The stopper 52 is biased in the direction of the arrow in FIG. 12 by the compression spring 52b wound around the shaft. By inserting the pins 52a into the engaging holes 53 formed in the stapler holding member 5A and then intersecting them, the stapler holding member 5A is detachably attached to the holding member support base 51.

In FIGS. 13 and 14, an L-shaped adjusting member 55 is attached to the front portion of the stapler holding member 5A by screws 56. The position of the adjusting member 55 can be adjusted in the direction of the arrow within the range of the elongated hole 55a formed in the adjusting member 55, and the display unit 57 for displaying the position of the end 55c of the adjusting member 55 is shown in FIG. It is provided on the holding member 5A.

On the upper plate 55b of the adjusting member 55, a center portion of a butting guide 58 is rotatably mounted by a support shaft 58a. A damper (not shown) is provided on the support shaft 58a, and the friction of the damper acts to maintain the position of the abutment guide 58 regardless of whether the abutment guide 58 rotates in the left or right direction. There is. Thereby, the butting guide 58 can be stopped at an arbitrary angle with respect to the stapler 1.

With the above-described structure, the abutting guide 58 is rotated at an angle desired by the user, and the sheet bundle P0 is brought into contact with the abutting guide 58 and clinched while the position of the adjusting member 55 is adjusted. The bundle P0 can be stapled accurately and at the angle and position desired by the user without shifting.

15 to 17 show a third embodiment of the sheet binding device according to the present invention. Also in this embodiment, the stapler 1 is patched to the stapler holding member 5B as in the second embodiment. Further, the stapler holding member 5B is provided with a stopper 52 with respect to the holding member support base 51.
It is detachably attached by.

A staple accommodating portion 60 capable of accommodating a plurality of staple cases 59 is formed at the rear portion of the stapler holding member 5B. The needle accommodating portion 60 includes an inner plate 61 and a slit 6
2a is formed so as to be surrounded by a bottom plate 62, left and right side plates 63a and 63b of the stapler holding member 5B, an upper plate 63c, and a rear side plate 63d. The rear side plate 63d includes a needle case 5
An opening 65 through which 9 can be taken in and out is formed. A spring 67 having a lower end to which a pressing plate 66 is fixed is disposed in the needle storage portion 60, and the upper end of the spring 67 has an upper plate 63c.
It is fixed to the inner surface of the.

By inserting a plurality of staple cases 59 into the staple storing portion 60 through the openings 65 and stacking them, the staple case 59 for supply is provided in the stapler holding member 5B. When the staple 2 in the stapler 1 is gone,
As shown in FIG. 7, by inserting the user's hand into the slit 62a and pulling out the staple case 59, it is possible to easily perform staple supply to the stapler 1.

FIG. 18 shows another method of storing the needle case. In the figure, a hinge 69 is provided on the side of the sorter 81.
Is provided with a cover 70 that can be opened and closed, and an inner wall of the cover 70 is provided with a claw member 71 that can be engaged with and disengaged from an engaging member (not shown) in the sorter 81. Further cover 7
A needle storage box 73 having a slit 72 is provided in 0, and a large number of needle cases 59 are stored in the needle storage box 73. Although a small number of needle cases 59 are stored in the needle storage portion 60 of the stapler holding member, a large number of needle cases 59 can be stored by providing the needle storage box 73 in the cover 70 as described above. The needle can be replenished for a long period of time.

[0048]

As described above, according to the present invention,
By making the stapler attachable to and detachable from the stapler holding member of the stapler unit, or by making the stapler holding member attachable to and detachable from the stapler unit, it is possible to easily load the stapler with a comfortable posture. , Needle exchangeability can be greatly improved.

Further, since the staple case for replenishment is stored in the staple storing portion of the stapler holding member, it is possible to easily replenish the stapler with staples within a short time when the stapler has no staples.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an operation of a sheet binding device (stapler unit) showing a first embodiment of the invention.

FIG. 2 is a vertical sectional side view of a sorter to which the sheet binding device of the present invention is applied.

FIG. 3 is a vertical sectional side view of the sheet binding device according to the first embodiment of the present invention.

FIG. 4 is a view on arrow XX in FIG.

FIG. 5 is a functional diagram of the seat device.

FIG. 6 is a side view of the stapler and the swinging member portion in the home position.

FIG. 7 is a similar operation diagram.

FIG. 8 is a vertical sectional side view of a stapler attaching / detaching part.

FIG. 9 is a plan view of staple-stitched sheets.

FIG. 10 is a vertical sectional side view showing another example of the stapler attaching / detaching portion.

FIG. 11 is a vertical sectional side view of the sheet binding device showing the second embodiment of the present invention.

FIG. 12 is a vertical sectional rear view of the same.

FIG. 13 is a plan view of the stapler holding member portion.

FIG. 14 is a side view of the stapler holding member.

FIG. 15 is a vertical sectional side view of the sheet binding device showing the third embodiment of the present invention.

FIG. 16 is a vertical rear view of the sheet binding device.

FIG. 17 is a vertical sectional side view of the stapler holding member portion.

FIG. 18 is a perspective view of a sorter cover part showing another example of the needle case storage part.

FIG. 19 is a side view showing a positional relationship between a tray and a stapler of a general sorter.

FIG. 20 is a vertical sectional side view showing an example of a conventional sheet binding device.

[Explanation of symbols]

1 stapler 2 needles 3 stapler unit 5, 5A, 5B stapler holding member 6 Guide member 25 Locking member 50 claw members 51 Holding member support 55 Adjusting member 58 Pushing guide 59 needle case 60 needle storage 70 cover 73-needle storage box P sheet P0 sheet bundle B tray (bin)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display part // B65H 39/11 K 9037-3F

Claims (7)

[Claims] 1. A sheet binding device having at least one tray for stacking and accommodating sheets, and a stapler for staple-stitching the sheets stacked on the tray, and a stapler holding member for holding the stapler, A sheet binding apparatus comprising: a stapler holding member, a guide member that is capable of advancing and retracting the stapler with respect to a sheet binding position, and the stapler is removable from the stapler holding member. 2. The sheet binding device according to claim 1, further comprising a locking member that is engageable with the stapler holding member and slidably provided on the stapler holding member. 3. The sheet binding device according to claim 1, further comprising an elastic member capable of engaging the stapler with the stapler holding member and fixed to the stapler holding member. 4. A stapler holding member for holding a stapler, and a holding member support base, wherein the stapler holding member is detachable, and the stapler is fixed to a guide member for advancing and retracting the stapler to a sheet binding position. Sheet binding device. 5. The sheet binding device according to claim 4, wherein the stapler holding member has display means for displaying a clinch position with respect to the sheets. 6. The stapler holding member has a guide member for guiding a sheet edge, and the guide member is rotatably provided with respect to the stapler holding member. Sheet binding device. 7. The sheet binding device, wherein the stapler holding member has a needle storing means for storing a staple used in the stapler.