JP2870139B2 - Automatic stapler for copier - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic stapler of a copying machine for clinching a sheet discharged from the copying machine with a stapler, and more particularly, to a stapler in which the stapler is positioned closer to a staple loading position. The present invention relates to an automatic stapler of a copying machine that moves.

(B) Conventional technology Conventionally, there has been an automatic stapler for clinching a sheet discharged from a copying machine. However, this conventional device is configured by using a specially developed stapler itself to be attached to the copying machine. Was.

For this reason, not only is it expensive, but also the shape is large, and when it is installed in a copier, there is a problem that only that portion becomes bulky.

To solve this problem, a stapler that is commercially available for office use is used and improved.

(C) Problems to be solved by the invention In this case, in order to load staples, it is necessary to pull out the stapler from the standby position to the staple loading position.
If this operation is pulled out using the biasing force of the spring, the stapler pops out suddenly when the pullout operation is performed.
There is a concern about danger.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic stapler of a copying machine in which the drawer of the stapler is braked so that the stapler can be loaded safely.

(D) Means for Solving the Problems The present invention relates to an automatic stapler of a copying machine that clinches a clinch position of a sheet discharged from a copying machine onto a discharge tray from a standby position to the clinch position. A sliding frame on which the stapler is mounted and slides back and forth from a standby position to a clinch position is supported by a guide rail so as to be slidable from the standby position to a staple loading position in a direction opposite to the clinch position. Along with biasing the sliding frame in the staple loading direction with a spring, a contact position for regulating the sliding frame at a standby position and a contact lever operable at a position for releasing the regulation are provided, On one of the sliding frame and the guide rail, a rack is formed along the sliding direction of the sliding frame,
On the other hand, the present invention is characterized in that it is an automatic stapler of a copying machine in which a pinion with a loosening function that meshes with the rack is pivotally supported.

(E) Function In the automatic stapler of the copying machine of the present invention, when the stapler is loaded with the stapler, when the regulation of the sliding frame by the contact lever is released to pull out the sliding frame, the sliding frame is biased by the spring. Is pulled out to the staple loading position side.

Since the pinion with the slack function is engaged with the rack in the slack state at the time of pulling out, the sliding frame is pulled out at a slow speed (slowing operation) when the sliding frame is pulled out.

(F) Effect of the Invention As described above, according to the present invention, the sliding frame is prevented from suddenly jumping out due to the spring force, so that there is no danger of the sudden jumping out, and the staple can be loaded safely.

(G) Embodiment of the Invention One embodiment of the present invention will be described below in detail with reference to the drawings.

The drawing shows an automatic stapler of a copying machine in which an automatic stapler is incorporated in a sorter of the copying machine. In the sorter 10 shown in FIGS. Each of the above-mentioned paper discharge trays 11 has pins 12, 12 attached to both sides thereof engaged with spirals engraved on the peripheral surfaces of the elevating rotating bodies 13, 13, and the elevating rotating bodies 13, One rotation of 13 raises or lowers one by one.

The paper copied by a copying machine (not shown) is discharged to a paper discharge path 15 formed by upper and lower guide plates 14 and 14, and then the paper discharged by upper and lower paper discharge rollers 16 and 16 is discharged. Tray 11
Are received and stacked one by one.

The configuration of the above-described sorter 10 is a well-known technique, and thus details thereof are omitted.

The automatic stapler 20 incorporated in the sorter 10 performs a clinch operation on the sheets 21a and 21b stacked on the sheet discharge tray 11a supported by the elevating rotary member 13.

For this purpose, the automatic stapler 20 is also formed obliquely so as to correspond to the inclination of the paper discharge tray 11a (see FIG. 1).

As shown in FIG. 2, the automatic stapler 20 described above is disposed on one side of the front end side of the paper discharge tray 11, and a position where there is no support for paper discharge is set to a standby position.
Move to clinch position A of a, 21b.

Also, on the other side facing the above-mentioned automatic stapler 20,
The apparatus has a mechanism 22 for shifting the sheets 21a and 21b.
Makes the paper 21a, 21b of a plurality of sizes contact the reference wall 23,
The papers 21a and 21b are aligned on the clinch position A side.

 The above-described biasing mechanism 22 is configured as follows.

That is, the swinging rods 25, 25 are fixed to the upper and lower positions of a rotating shaft 24 rotatably supported at both ends in the vertical direction. Has been erected.

In addition, an arc-shaped fitting hole 27 is formed in each of the paper output trays 11 so that the above-mentioned one-side bar 26 can be rotated.
The above-mentioned shift bar 26 has a sufficient length in the vertical direction so as to act on all the paper discharge trays 11.

A fan-shaped gear 27 is fixed to the lower end of the aforementioned rotating shaft 24,
The sector gear 27 is driven by a forward / reverse rotation motor 29 via a reduction gear 28.
By the forward / reverse control of the forward / reverse rotation motor 29, the above-described one-side bar 26 rotates toward the center of the paper discharge tray 11,
The papers 21a and 21b are pressed against the reference wall 23 to align the papers 21a and 21b.

The above-described one-side moving mechanism 22 is an automatic stapler to be described later.
It is basic to move in synchronization with 20, but paper
It is also possible to operate during the discharge of the paper 21a, 21b to execute the alignment operation while discharging the paper.

 Next, the configuration of the automatic stapler 20 will be described.

That is, as shown in FIGS. 3 and 4, the automatic stapler 20 includes a clinch mechanism 30 and a moving mechanism 31.
The sliding frame 33 on which the stapler 32 is mounted is formed so as to straddle both of the mechanical units 30 and 31.

The above-described sliding frame 33 is formed such that the side of the clinch mechanism section 30 is short and the side of the moving mechanism section 31 is long in plan view (see FIG. 3), and has a U-shaped cross section (see FIG. 4). The rear side of the stapler 32 is bent so that the side of the clinch mechanism 30 side is low and horizontal when viewed from the rear.
The side on the side is high, and four guide rollers 35 are supported on the inside (see FIG. 6).

The above-mentioned guide rollers 35 are formed by upper and lower rail sides 38, 3 of a C-shaped rail 37 fixed to a fixed frame 36 provided on the sorter 10.
8, the sliding frame 33 is supported so as to be slidable from the standby position to the clinch position A and further slidable from the standby position to the outer staple loading position. Spring stretched over moving frame 33
At 39, the sliding frame 33 is urged toward the stance loading position.

Further, a rack 53 is continuously provided on the lower surface side of the above-mentioned C-shaped rail 37, and a pinion 54 with a brake rotatably supported inside the sliding frame 33 is engaged with the rack 53 (fourth embodiment).
FIG. 6, FIG. 6). The above-described pinion 54 with a brake encloses a relatively high-viscosity oil in a bearing portion thereof and performs an action of imparting a brake to its rotation.
When the spring 33 is pulled out to the staple loading position side by the biasing force of the spring 39, the sudden pulling out by the spring 39 is controlled, and it can be pulled out at a slow speed (slow operation).

The above-described movement from the standby position to the clinch position A is driven by the above-described movement mechanism unit 31, and the movement from the standby position to the staple loading position is performed by releasing the engagement of the movement mechanism unit 31 by the above-described spring. Driven by 39 urging forces.

 The above-described clinch mechanism 30 is configured as follows.

That is, in FIG. 3, FIG. 4 and FIG. 5, a state in which the drive shaft 41 is extended to the other moving mechanism 31 on the upper part of the inverted U-shaped fixed frame 40 fixed to the sorter 10 side. The drive shaft 41 controls one rotation through an appropriate motor and a reduction gear (not shown).

Further, a clinch lever 42 is provided below the drive shaft 41 described above.
The clinch lever 42 is formed by connecting a pair of left and right sides in an inverted U-shape on the front end side, and each of the base ends is pivotally supported by the above-described fixed frame 40 by a support shaft 43.

A pair of eccentric rotary cams 44 are fixed to the drive shaft 41 in correspondence with the above-mentioned clinch lever 42.
A cam groove 45 is engraved on the outer surface of the, and a pin 46 implanted in the clinch lever 42 is fitted into the cam groove 45 (see FIG. 5).

Therefore, when the rotary cam 44 makes one rotation, the pin 46 is guided by the cam groove 45, so that the free end side of the clinch lever 42 moves up and down by one.

The free end side of the above-mentioned clinch lever 42 has a clinch roller.
A shaft portion 48 of the clinch roller 47 is engaged with a long groove 49 to enable vertical displacement, and is urged downward by a spring 50 having strong elasticity.

Therefore, when the clinch lever 42 is excessively pressed, the clinch roller 47 retreats against the spring 50,
Avoid over-pressing.

A tongue piece is provided at the lower front end of the mounting portion 34 on which the stapler 32 is mounted.
When the stapler 32 moves to the clinch position A, the tongue piece 51 contacts the stopper 62 fixed to the fixed frame 36 to regulate the position of the stapler 32 to the clinch position A.

 The above-described moving mechanism unit 31 is configured as follows.

That is, in FIGS. 3, 4 and 6, a substantially heart-shaped rotary cam 60 is fixed to the shaft end of the drive shaft 41, and the upper end of the swing lever 61 is brought close to the rotary cam 60. It is pivotally supported on a fixed frame 40 by a support shaft 62.

The above-mentioned swing lever 61 is supported by a roller 63 which is in contact with the above-mentioned rotary cam 60. Swing lever 61 so that the
To the rotating cam 60 side.

Therefore, when the rotation cam 60 is controlled by one rotation, the swing lever 61 reciprocates one time.

A pressing piece 65 is pivotally attached to the lower end of the above-mentioned rocking lever 61 by a support shaft 66, and a hitting piece 67 is continuously provided on the upper front surface of the pressing piece 65 so as to abut on the front surface of the rocking lever 61, It is urged by a spring 68.

When the pressing piece 65 slides the sliding frame 33 excessively, the pressing piece 65 rotates against the spring 68 and can be avoided.

A contact lever 69 is located on the upper surface of the bottom of the sliding frame 33 and opposed to the pressing piece 65, and an intermediate portion of the contact lever 69 stands on the upper surface of the bottom of the sliding frame 33. The supporting member 70 is fixedly supported by a support shaft 71, a roller 72 that contacts the pressing piece 65 is supported on the rear end side, and a lower surface on the front end side is connected to the supporting member 70 described above. The roller 72 is brought into contact with the stopper 73 to regulate the position where the roller 72 comes into contact with the pressing piece 65, and is pressed and urged by the spring 74.

Therefore, when the swing lever 61 swings forward, the contact piece 69 is pushed by the pressing piece 65, and the sliding frame
When 33 moves to the clinch position A side and the swing lever 61 moves backward, the spring urging the swing frame 33
The sliding frame 33 can also be retracted to the standby position by 39.

Therefore, the swing lever 61 is moved by one rotation of the rotary cam 60.
When reciprocating, the sliding frame 33 also reciprocates one time.

The contact lever 69 can slide the sliding frame 33 to the staple loading position by removing the roller 72 from the pressing piece 65.

This sliding is performed by the urging force of the spring 39.To release the above-mentioned engagement, a release roller 75 is supported at the front end of the contact lever 69, and the roller 75 is released by the release lever 76. Manipulate.

That is, as shown in FIG. 7, the bent portion of the release lever 76 formed in a concave shape is fixed to the fixed frame 36 by the support shaft 77.
And a contact piece 78 is bent at the lower end thereof, abuts against the bent portion 79 of the fixed frame 36, and is pressed and urged by a spring 80 stretched between the fixed frame 36 and the release. Lever 76
An operation section 81 is formed at the upper end of the.

Therefore, when the operation unit 81 of the release lever 76 is pressed,
When the contact piece 78 at the lower end is raised to come into contact with the roller 75 for releasing the contact lever 69, and the roller 75 is lifted, the roller 72 on the rear end side can be removed from the pressing piece 65.

When the contact lever 69 returns to the engagement with the pressing piece 65, the roller 72 of the contact lever 69 is pressed by the inclined guide surface 82 of the pressing piece 65 when the sliding frame 33 is pressed. Return is possible.

A clinch operation of the automatic stapler 20 configured as described above will be described.

When the copying machine discharges the copied paper 21a or 21b to each of the paper discharge trays 11, the automatic stapler 20 is located at a standby position that does not hinder the paper discharge.

The clinch mechanism 30 and the moving mechanism in this standby position
The standby state of 31 is in the state shown in FIG. 3, FIG. 5, and FIG.

When the copying machine has completed a predetermined amount of copying and is designated for the automatic stapling mode, the one-side shifting mechanism is provided at the beginning of the mode.
22 shifts the paper 21a or 21b on all the paper discharge trays 11 to the clinch position A side (see FIG. 2).

That is, by controlling the forward / reverse rotation motor 29 in the forward / reverse direction by a predetermined amount, the one-sided bar 26 swings one reciprocating motion. The paper 21a or 21b is aligned with the clinch position A.

Subsequently, the drive shaft 41 is controlled to perform one rotation, and the clinch operation is performed.

First, in the movement mechanism section 31, the heart-shaped rotating cam 60 starts rotating from the state shown in FIG. 6, and the forward movement of the swing lever 61 is completed by about 60 degrees of rotation, and the swing movement is performed by this forward movement. Since the pressing piece 65 of the moving lever 61 pushes the contact lever 69, as shown in FIG. 8, the sliding frame 33 moves to the clinch position, and the tongue piece 51 of the mounting portion 34 of the sliding frame 33 The moving position is restricted by contacting the stopper 52 (see FIG. 9).

In addition, even when the sliding frame 33 moves, the braking action of the pinion 54 with the brake works. However, since the moving force of the moving mechanism 31 has a larger output, there is no support for the movement.

By the movement of the sliding frame 33, the clinch position A of the sheet 21a or 21b is inserted into the clinch position of the stapler 32.

This state is about 300 from the initial rotation of the rotary cam 60.
It is held to the position of the degree.

On the other hand, the clinch mechanism section 30 starts to rotate the eccentric rotary cam 44 from the state of the standby position shown in FIG. 5, the clinch lever 42 moves down, and the rotary cam 44 rotates about 70 degrees,
The clinch roller 47 comes into contact with the upper surface of the stapler 32, further rotates, and the forward movement (downward movement) of the clinch lever 42 is completed by about 180 ° rotation from the initial rotation, and the clinch roller 47 is moved by the forward movement. By pressing the upper part of 32, the clinch position A of the paper 21a or 21b can be clinched by stapling as shown in FIG.

Subsequently, the rotating cam 44 rotates, and the clinch lever 42
Moves upward, the clinch is released, and approximately 29
At a position of 0 degrees, the clinch roller 47 separates from the upper surface of the stapler 32 and completes one rotation, so that it can return to the standby position shown in FIG.

Further, the return of the swing lever 61 is allowed from a position where the rotating cam 60 of the moving mechanism section 31 is about 300 degrees from the initial rotation,
Upon completion of one rotation, it is possible to return to the standby position shown in FIG.

Next, the stapling operation of the stapler 32 will be described.

That is, as shown in FIG. 7, when the operating portion 81 of the release lever 76 is pressed, the contact piece 78 pushes up the release roller 75 of the contact lever 69, so that the rear end roller of the contact lever 69 72 is removed from the pressing piece 65 of the swing lever 61.

As a result, the sliding frame 33 can be moved from the standby position to the staple loading position by the urging force of the spring 39, and furthermore, at this movement, moves at a gentle speed due to the braking action of the pinion 54 with the brake. As shown in the figure, the stapler 32 is pulled out, and the staple can be loaded by opening the upper part thereof.

When the slide frame 33 is manually pushed in after the staples are loaded, the roller 72 of the contact lever 69 is pressed by the pressing piece 65 of the swing lever 61.
Is pushed down by the inclined guide surface 82 and passes through the pressing piece 65, thereby being locked to the front side of the pressing piece 65 and returning to the standby state.

As described above, according to the automatic stapler 20 of the above-described embodiment,
Since the sliding frame 33 is prevented from suddenly jumping out due to the urging force of the spring 39 when the staple is loaded, there is no danger of the sudden jumping out, and the staple can be loaded safely.

Further, by mounting the stapler 32 on the mounting portion 34 of the sliding frame 33, a commercially available stapler 32 and stapler can be used, and the configuration can be made extremely inexpensive.

Further, the rotary cams 44 and 60 are driven by one drive shaft 41,
By moving the sliding frame 33 and the clinch lever 42,
The structure is simplified, the whole can be made low in bulk, and it can be made compact and compact.

In correspondence between the configuration of the present invention and the above-described embodiment, the guide rail of the present invention corresponds to the C-shaped rail 37 of the embodiment, but the present invention includes other configurations, and the present invention has only the configuration of the embodiment. However, the present invention is not limited to this.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a sectional front view of a sorter, FIG. 2 is a partially cutaway plan view of a sorter, and FIG. FIG. 4 is a partial cross-sectional rear view of the automatic stapler, FIG. 5 is a cross-sectional side view of the clinch mechanism, FIG. 6 is a partially cut-away cross-sectional side view of the moving mechanism, and FIG. FIG. 8 is an explanatory view showing the operating state of the moving mechanism section, FIG. 9 is an explanatory view showing the operating state of the clinch mechanism section, and FIG. 10 is an explanatory view showing the operating state of the stapler loading. FIG. 20: automatic stapler, 30: clinch mechanism 31: moving mechanism, 32: stapler 33: sliding frame, 37: C-shaped rail 39 ... spring, 53: rack 54: pinion, 69: contact lever

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65H 37/04 G03G 15/00

Claims (1)

(57) [Claims] An automatic stapler of a copying machine for clinching a clinch position of a sheet discharged from a copying machine onto a discharge tray with a stapler moving from a standby position to the clinch position, wherein the stapler is mounted. A sliding frame that reciprocates from the standby position to the clinch position by a guide rail so as to be slidable from the standby position to a staple loading position in a direction opposite to the clinch position. And a contact lever operable at a contact position for regulating the sliding frame at a standby position and a position for releasing the regulation while biasing the sliding frame at a standby position, wherein one of the sliding frame and the guide rail is provided. A rack is formed along the sliding direction of the sliding frame, and a pinion with a loosening function that meshes with the rack is pivotally supported. Dynamic stapler.