JPH10157914A - Sheet sheaf binding device and sheet treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the binding range of a stapler to a specified range by differentiating stop control of a driving part according to driving time from the start of the driving time until the detection of a detecting time during initial action when a binding range formed of a driver part and an anvil part is made a maximum range. SOLUTION: In case of a sensor S1 being ON, a motor M1 is stopped after one normal driving action to prevent overrun and to hold a stapler to a specified range. In case of the sensor S1 being OFF, an action timer is started simultaneously with the start of the motor M1 so as to clock time until the sensor S1 is turned ON. In case of being within the specified time, the motor M1 is stopped after the lapse of the specified time, and in case of being the specified time or more, the motor M1 is stopped immediately. That is, during initial action after the disposal of a stable jam or the like, the motor M1 is controlled to stop after driving the overrun part of a stapler during normal use even in case of the sensor S1 being OFF. The stapler can therefore be held to a specified binding range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet bundle binding apparatus for binding a sheet bundle, and sorts and sequentially stores sheets carried out from an image forming apparatus such as a copying machine into a tray (hereinafter, referred to as a "bin tray"). The present invention relates to a sheet bundle binding device that binds the sorted sheet bundle.

[0002]

2. Description of the Related Art Conventionally, a sheet bundle binding apparatus (hereinafter referred to as a "stapler") that performs staple binding of a sheet bundle performs sheet processing for sorting, aligning, and the like sheets conveyed from an image forming apparatus such as a copying machine. Equipment (sort, finisher, etc.)
It is provided in.

[0003] As the stapler, a simple type small stapler that manually performs staple binding of a sheet bundle and an electric stapler are known. The latter electric stapler is
Although not shown in the figures, a swing unit including a magazine unit for storing and sending out the needles and a driver unit for ejecting the fed needles one by one, and an anvil unit for bending the needles in cooperation with the driver unit are provided. It has a receiving part. Then, the entire stapler is moved forward and backward with respect to the end of the sheet bundle on which the processing such as sorting is performed, and the swing unit is swung with respect to the receiving unit by a driving mechanism including a gear train and a motor. The sheet bundle is bound.

Further, the stapler includes a drive control unit for controlling the driving and stopping of the motor, and a sensor for detecting that a binding front formed by the swinging unit and the receiving unit is a maximum front. I have. The timing chart of FIG. 19 shows the relationship between the swing timing of the driver and the magazine and the ON / OFF timing of the sensor. As can be seen from this figure, when the sensor is in the ON state, the driver section and the magazine section have reached the top dead center (maximum frontage), and the binding frontage formed by the driver section, the magazine section, and the anvil section is the maximum frontage. Is held in. FIG. 21 shows the initial operation at that time. That is, the sensor drives the motor for swinging the driver unit and the magazine unit.
N, and the driving of the motor is stopped after the sensor is turned on, so that the driver unit and the magazine unit are held at the top dead center, which is the maximum frontage position.

[0005] In recent years, it has been desired to increase the capacity of the number of sheets to be bound, and accordingly, the power and speed of the motor have been increased, and the cam efficiency has been reviewed.
This measure for increasing the capacity is specifically as shown in FIG. As in the case of FIG. 19, the timing chart of FIG.
/ OFF timing relationship. As can be seen from this figure, the driving time (bottom dead center) of the driver section is extended to reduce the driving load. At the same time, the ON area (detection area) of the sensor is made wider than the top dead center (maximum frontage) area, and the driving of the motor is stopped before the driver section and the magazine section reach the top dead center (maximum frontage). I have.
This is to prevent the driver section and the magazine section from overrunning from the top dead center when the motor is stopped.
Thereby, when the sheet bundle is actually hit, even if the driving of the motor is stopped before the driver unit and the magazine unit reach the top dead center (the maximum frontage) (within the displacement area up to the top dead center), The driver section and the magazine section stop at the top dead center area (maximum frontage) due to the overrun prevention, and the binding frontage is held at the maximum frontage.

[0006]

However, if the above-mentioned countermeasure for increasing the capacity of the number of sheets to be bound is taken, the O.S.
Since the N region (detection region) also exists in a region other than the top dead center (maximum frontage) region, it is difficult to always guarantee the maximum frontage of the stapler even if the initial operation shown in FIG. 21 is performed. Was.

For example, if the user performs an initial operation in accordance with a flowchart shown in FIG. 21 after moving the stapler to remove a staple at the time of a staple jam, etc., even if the sensor is in the ON state, the driver unit and the The magazine portion stops outside the top dead center region (displacement region). That is, the binding frontage of the stapler becomes narrower than the maximum frontage, so that there is a problem that the sheet bundle cannot be inserted into the binding frontage at the time of the next binding, or a bundle shift occurs.

Further, in FIG. 20, when the sensor is turned on in the displacement area where the bottom dead center changes to the top dead center and the driving of the motor is immediately stopped, the inertia of the driving system does not resist the swing load. In some cases, the driver section and the magazine section stop in the displacement area before reaching the top dead center area. As a result, the binding frontage of the stapler becomes narrower than the maximum frontage, and as described above, the sheet bundle cannot be inserted into the binding frontage at the time of the next binding, or a bundle shift occurs. There was a problem.

In order to solve the above-mentioned problem, there is a device that uses a reversing circuit as a driving circuit and performs an initial operation according to a flowchart shown in FIG. This is because, as shown in FIG. 22, the motor is reversed after passing through the detection area (ON area) of the sensor and returned to the detection area of the sensor again so that the binding frontage of the stapler becomes the maximum frontage. It was done. However, this configuration has a problem that the cost is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stapler with a binding front at a predetermined frontage to provide stable binding performance.

[0011]

In order to achieve the above object, a typical configuration of the present invention is to provide a driver for driving a needle one by one, and an anvil for bending the needle in cooperation with the driver. A drive unit for swinging the driver unit with respect to the anvil unit, a drive control unit for controlling start / stop of the drive unit, and a binding front formed by the driver unit and the anvil unit in a substantially open state. And a detecting unit that detects that the binding unit formed by the driver unit and the anvil unit has a maximum frontage at the time of the initial operation, from the activation of the driving unit to the detection by the detecting unit. The stop control of the driving unit is made different depending on the driving time.

According to the above configuration, since the stop control of the driving unit is made different depending on the driving time from the start of the driving unit to the detection by the detection unit, for example, the sheet bundle is actually hit. At the time of normal use, the overrun is prevented by performing stop control of the driving unit at the same time as the detection of the detection unit, and in the initial operation after processing of a needle jam or the like, after the detection of the detection unit. Even if there is, stop control of the drive unit is performed immediately after a predetermined time elapses without performing stop control immediately, so that the binding frontage can be held by the predetermined frontage.

A driver for driving the needle one by one; an anvil for bending the needle in cooperation with the driver;
A drive unit that swings the driver unit with respect to the anvil unit, a drive control unit that controls driving / stopping of the drive unit, and a binding front formed by the driver unit and the anvil unit in a substantially open state. A first detection unit that detects that there is an object, and a second detection unit that detects a maximum frontage of the binding frontage in a detection area of the first detection unit, wherein the driver unit and the anvil unit At the time of an initial operation in which the binding frontage to be formed is the maximum frontage, stop control of the driving unit is made different depending on a driving time from activation of the driving unit to detection by the detection unit.

According to the above construction, the first detecting portion for detecting that the binding frontage is substantially open, and the second detecting portion for detecting the maximum frontage of the binding frontage within the detection area of the first detecting portion. For example, during normal use of actually hitting a sheet bundle, overrun is prevented by performing stop control of the driving unit simultaneously with detection of the first detection unit,
In the initial operation after processing such as a needle jam, the stop control is not performed immediately even after the detection by the first detection unit, and the stop control of the drive unit is performed after the detection by the second detection unit. By doing so, the binding frontage can be held at a predetermined frontage.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sheet bundle binding apparatus to which the present invention is applied will be specifically described below with reference to the drawings. In the following description, a case where the sheet bundle binding apparatus of the present invention is mounted on a sheet processing apparatus such as a sorter connected to an image forming apparatus such as a copying machine is exemplified.

[First Embodiment] A sheet binding apparatus according to a first embodiment will be described with reference to the drawings. In the present embodiment, a case where the present sheet bundle binding apparatus is mounted on a sorter as a sheet processing apparatus will be described as an example. Since the image forming apparatus such as a copying machine to which the sorter is connected uses a well-known electrophotographic method, the description thereof is omitted.

An embodiment in which the present sheet bundle binding apparatus is mounted on a sorter as a sheet processing apparatus will be described below with reference to the drawings. 1 to 5 are diagrams showing a schematic configuration of the present sheet bundle binding device, and FIGS. 6 to 12 are diagrams showing a schematic configuration of a sorter provided with the present sheet bundle binding device.

First, a schematic configuration of the sorter will be described. 6 and 7, reference numeral 101 denotes a sorter as a sheet processing apparatus, which receives a sheet carried out from an image forming apparatus such as a copying machine and performs processing such as sorting, alignment, binding and the like on the sheet. The sorter 101 includes a body 106 having a pair of opposed side plates 102, a base 103, and a cover 105, a plurality of bins B (B1 to Bn), and further has a bin unit 109 which moves up and down. .

The machine body 106 has a carry-in entrance 110 for introducing the sheet P carried out from the image forming apparatus (copier) M.
And a pair of carry-in rollers 111 in the vicinity thereof. A non-sort path 112 and a sort path 113 branched from the non-sort path 112 are arranged downstream of the carry-in roller pair 111.

The non-sort path 112 is disposed in a substantially horizontal direction, and a non-sort discharge roller pair 115 serving as a non-sort discharge port is disposed downstream thereof. The sort path 113 extends downward, and a sort discharge roller pair 116 serving as a sort discharge port is disposed downstream of the sort path 113. The sheet bundle is further positioned at a position related to the sort discharge roller pair 116. A binding device (hereinafter referred to as “stapler”) 117 is provided.

As shown in FIG. 6, a stapler door 118 and a door switch S12 are provided at a position of the cover 105 facing the stapler 118. Therefore, the stapler door 118 is opened and closed when the stapler 117 is replaced with a staple, and the opening and closing of the stapler door 118 is detected by the door switch S12.

A manual staple button S13 is provided on the upper portion of the cover 105. The manual staple button S13 is provided so that it can be easily determined that the button S13 has been pressed down.
An indicator L1 such as an ED is arranged near the button S13.

As shown in FIGS. 6 to 8, the bin unit 109 includes a frame 136 having an inclined portion, a vertical portion, and a horizontal portion, and a vertical portion at the front and rear ends of the inclined portion of the frame 136. And a bin unit housing 140 composed of a vertical frame 137 provided on the vertical frame 137 and a bin cover 139 supported by the vertical frame 137. On the front side of the bin unit housing 140, as shown in FIG. 8, an alignment reference plate 141 for contacting one edge of the sheet P is provided.

Further, the bin unit 109 includes a plurality of bins B
(B1 to Bn), and an alignment rod 143 swinging about a central axis 142. Further, as shown in FIG. 9, an engagement plate 146 is formed on each side of the tip of the bin B, and the engagement plate 146 is attached to the vertical frame 137.
The front end side of the bin B is supported by engaging with a support plate (not shown) provided inside the bin.

In FIGS. 6 and 7, reference numeral 132 denotes a lead cam for moving up and down the bin unit 109 having a number of bins B (B1 to Bn). Although not shown, the lead cam 109 is similarly arranged on the back side of the unit. Reference numerals 125 and 126 denote guide rollers, which are rotatably provided on the frame 136.

In FIG. 7, reference numeral 123 denotes a spring for balancing the weight of the bin unit 1,
It is hung on a hook 122 fixed to 136. Although FIG. 7 shows the spring 123 only on the front side of the apparatus, it is also provided on the back side of the apparatus. Reference numeral 131 denotes a rotation shaft of the lead cam 132, which is fixed to the lead cam 132 by a rotation preventing means 130, and a lower end of which is a bearing 13
It is fitted to 4 and receives a thrust load. Also rotating shaft
131 is provided with a toothed pulley 133.
Belt 13 stretched between 133 and cam drive motor 129
Rotated by 5. By this rotation, the lead cam 132 rotates, and the bin roller 149 of the bin B is guided by the spiral groove 132a of the lead cam 132, and the bin B moves up and down.

Roller support pins 147 are fixed to both sides of the base end of the bottle B, respectively.
149 are rotatably supported. Further, the bin B has an alignment rod at a predetermined distance from the movement center axis 142.
An elongated hole 150 that is longer than the rotation distance of 143 and that is sufficiently wider than the diameter of the alignment rod 143 is opened. In addition, each bin B
6A to 8C, the base end Ba of the container stands upright with respect to the sheet storage portion Bb, and as shown in FIGS. The upper sheet P slides on the sheet storage surface Bb, and its rear end abuts on the base end Ba, so that the front and rear directions are aligned.

In the bin B, a bin roller 149 protrudes from a long groove 152 (see FIG. 8) provided at the base end of the bin unit housing 140 and is fitted into a guide plate 127 (see FIG. 7) of the body 106. ing. Also, the bin roller 14 of the lowermost bin Bn is used.
9n is placed on the lower guide roller 126, and the bin roller 149 of the bin B one stage higher than the lower bin Bn is placed on the bin roller 149n of the lower bin Bn. Bin B bin colo 149 is lower bin B bin colo 14
Supported by 9 Thus, the base ends of the bins B1 to Bn are supported by the bin unit housing 140, respectively.

Further, above and below the base end of the bin unit 109, transmission type in-bin sheet detection sensors S3 and S
When all sheets are taken out of the bin unit 109, the absence of sheets is detected by the in-bin sheet detection sensors S3 and S3, and the end of one operation is determined.

Further, as described above, the bin unit 109 has the alignment rod 143. Hereinafter, sheet alignment by the alignment rod 143 will be described with reference to FIGS.

A support plate 160 is provided below the base end of the frame 136 of the bin unit 109, and a lower arm 161 is rotatably supported on the support plate 160.
One of the members 161 is rotatably supported by a lower rotating shaft (not shown) projecting upward from the support plate 160. Also,
The lower end of the moving center shaft 142 is fixed to one of the lower arms 161 coaxially with the lower rotation axis thereof, and the lower end of the alignment rod 143 is fixed to the other. The upper end of the movement center shaft 142 is connected to the upper arm 162. As a result, the alignment rod 143 and the movement center shaft 14
2 are integrated with the upper arm 162 and the lower arm 161.

A moving center shaft 142 is rotatably supported by an upper rotating shaft 163 projecting downward from the bin cover 139. As a result, the alignment rod 143 is kept swingable about the movement center axis 142. Further, a sector gear 165 whose rotation center coincides with the movement center of the lower arm 161 is fixed to the lower arm 161. An alignment rod drive motor 166 is disposed below the support plate 160, The output gear 167 of the drive motor 166 meshes with the sector gear 165. As a result, the rotation of the motor 166 causes the alignment rod 143 to rotate.
Can be swung.

Thus, when aligning the sheet P, the aligning rod 143 moves from the home position (not shown) to the width approaching position 143a determined according to the size of the sheet P.
The sheet is brought into contact with the edge of the sheet, aligns the sheet in cooperation with the alignment reference plate 141, moves to the standby position 143b, and waits for the alignment of the next sheet.

The matching rod drive motor 166 is a stepping motor, and the amount of movement of the matching rod 143 is determined by the given number of pulses.

As shown in FIG. 8, a light-shielding plate 169 is fixed to the lower arm 161. When the light-shielding plate 169 moves together with the lower arm 161, the frame 136 is moved.
ON / OFF of the alignment rod home position sensor S9 fixed at the position.

Further, the stapler 117 includes the stapler
A stapler moving section 188 for driving the 117 to move between the binding position 117a and the retreat position 117b shown in FIG.
(See FIG. 10). This stapler moving part
188 includes a body frame 102a as shown in FIGS.
And a swing board 180 is supported on the shaft 179 so as to be swingable.

The swing substrate 180 includes the staple substrate 18
1 is fixed, and a stapler 117 is mounted on the staple board 181. A gear box 183 containing a reduction gear group 182 is attached to the body frame 102a, and a stapler swing motor 185 is provided in the gear box 183. The gear 186 fixed to the output shaft of the stapler rocking motor 185 meshes with the input gear 182a of the reduction gear group 182, and
A link disc 187 is fixed to the output gear 182b.

As shown in FIG. 12, cam portions 187a and 187b are provided on the outer periphery of the link disk 187 so that the stapler swing motor 185 is operated by the cam portions 187a and 187b. Then, the stapler positioning sensor S6 is turned on / off.

Near the outer peripheral edge of the link disk 187, a shaft
187c is erected. A link arm 189 is rotatably connected to the swing substrate 180 in a substantially horizontal state. The link arm 189 has an upright shaft 189a and an elongated hole 189b. The shaft 187c is fitted into the elongated hole 189b, and a spring 190 is stretched between the shaft 187c and the shaft 189a.

In the vicinity of the shaft 179, a sensor operating arm 191 made of resin or the like is rotatably supported as shown in FIG. One end 191a of this sensor operation arm 191
Is in contact with one end 180a of the swing substrate 180 and the other end 191b.
Is in contact with the stapler operating position sensor S7.

As shown in FIG. 11, a stapler paper sensor S8 is provided on the swinging board 180 via a mounting board 192. The sensor S8 has a side surface composed of a light emitting section and a light receiving section. It is configured by a transmission sensor having a U-shape.

The stapler 117 moves to the binding position 117a in the bin moving area by the stapler moving unit 188 when binding the sheet, and after the sheet binding is completed, the retreat position 117b allowing the movement of the bin B. Go to
Wait here.

Next, the stapler in the sorter 101
117 will be described with reference to FIGS.

In the figure, reference numeral 117A denotes a stapler main body, which has a pair of frames 2 facing each other. The rotation of the drive motor M1 fixed to one frame 2 is
The power is transmitted to the swing shaft 4 via the gear train 3. This swing shaft 4
, An eccentric cam 5 is fixed.

A pair of swing levers 6 are swingably supported by a support shaft A on a support member (not shown) provided on the stapler body 117A. The roller 6a provided on the swing lever 6 is pressed against the eccentric cam 5 by a spring (not shown). When the eccentric cam 5 rotates, the swing lever 6 swings based on the cam characteristics of the eccentric cam 5. (A chain line in the figure). The swing lever 6 has a magazine 7
The cartridge 7 is provided with a cartridge 8, and a plurality of staple plates connected with binding needles are loaded in the cartridge 8.

A delivery roller 9 for transporting the needle plate is disposed on a surface of the magazine section 7 which comes into contact with the lower surface of the cartridge. The lowermost needle plate in the cartridge 8 is transported by the delivery roller 9.

Downstream of the feed roller 9 in the conveying direction, a driver unit 10 is provided which is interlocked with the swing of the swing lever 6 to separate the sent needle plates one by one and deform the needle plate into a U-shape. And the swing operation of the swing lever 6 causes
The binding operation of the sheet bundle is performed in cooperation with the anvil portion 11 on the facing surface.

The swing shaft 4 is provided with a flag 12 for detecting the rotational position of the eccentric cam 5 and a rotational position detecting sensor S1 for detecting the flag 12.
The start / stop control of the motor M1 is performed by the control system shown in FIG.

First, the control system shown in FIG. 13 will be briefly described, and then the operation control of the stapler as the sheet bundle binding apparatus according to the present invention will be described with reference to FIG.

In FIG. 13, reference numeral 20 denotes a control unit, which comprises a CPU, a ROM, a RAM, a timer and the like (not shown).
The CPU reads out programs and various data from a central processing unit, a ROM (to be described later) or the like, performs necessary calculations and judgments, and outputs various control signals in accordance with a control program to perform drive control of the entire apparatus. The ROM is a read-only storage device and stores various programs and various data for operating the CPU. The RAM is a constant-speed call storage device, and includes a working area for temporarily storing data and an operation result in the CPU, a text area for storing various data, and the like. The timer measures time based on an instruction signal from the CPU and outputs time information.

The control unit 20 includes the sensors S described above.
1, S3, S6, S7, S8, S9, a switch S12 and a button S13 are connected, and drive control of the motors M1, 129, 166 and the like is performed via each driver based on signals and the like from these. I have.

Next, operation control of a stapler as a sheet bundle binding apparatus according to the present invention will be described with reference to FIG. In this stapler, the stop control of the motor M1 is made different depending on the drive time from the start of the motor M1 to the detection by the sensor S1. In particular,
If the drive time from the start of the motor M1 to the detection by the sensor S1 is longer than a predetermined time, the stop control of the motor M1 is immediately performed. Stop control is not performed immediately. The details will be described below.

As shown in FIG. 14, first, at step 11, it is determined whether the sensor S1 is ON or OFF.
Proceed to ep12, perform the normal driving operation once, and end.
That is, the motor M1 is activated to bind the sheet bundle by the stapler, and immediately after the sensor is turned on (step 13), the motor M1 is turned on.
1 is stopped (step 14). Therefore, during normal use of actually hitting the sheet bundle, the motor M1 is stopped at the same time as the sensor S1 is turned on, so that overrun can be prevented, and the stapler can be opened at a predetermined width (maximum width).
Can be held.

If the sensor S1 is OFF in step 11, the process proceeds to step 15, and the motor M1 is started (ON).
At the same time, start the operation timer (step 16),
The time until the sensor S1 is turned on is measured (step
17).

If the driving time from the start of the motor M1 to the turning on of the sensor S1 in step 18 is within a predetermined time (100 ms in this embodiment), the process proceeds to step 19, and after a further predetermined time elapses, step 21 is executed. To stop motor M1 (O
FF).

If the drive time from the start of the motor M1 to the turning on of the sensor S1 in step 18 is equal to or longer than a predetermined time (100 ms in this embodiment), the process proceeds to step 21 and the motor M1 is immediately stopped (OFF). ).

Therefore, in the initial operation after the processing such as a staple jam, for example, even if the sensor S1 is in the OFF state, the stop control of the motor M1 is performed after the stapler is overrun during normal use. Therefore, the stapler can be held at a predetermined frontage (maximum frontage).

As another form, when the driving time from the start of the motor M1 to the detection by the sensor S1 is within a predetermined time, the stop control of the motor M1 is performed next to the sensor S1. It may be performed after the detection. This operation is shown in the flowchart of FIG. Figure
As shown in FIG. 15, if the drive time from the start of the motor M1 in step 18 until the sensor S1 is turned on is within a predetermined time, the process proceeds to step 15 to start the motor M1 again, The motor M1 is driven until S1 is turned on, and the motor M1 is stopped when the drive time exceeds a predetermined time. With this, the same effects as those described above can be obtained.

As described above, according to the present embodiment, the stop control of the motor M1 is made different depending on the drive time from the start of the motor M1 to the detection by the sensor S1. At the time of normal use for actual driving, overrun is prevented by performing stop control of the motor M1 at the same time as detection of the sensor S1, and in the initial operation after processing such as a needle jam, the initial operation after the detection of the sensor S1 is performed. Even if there is, the stapler can be held at the predetermined frontage by performing the stop control of the motor M1 after the lapse of a predetermined time without immediately performing the stop control.

[Second Embodiment] A sheet binding apparatus according to a second embodiment will be described with reference to the drawings. Since the schematic configuration of the sorter as the sheet processing apparatus is the same as that of the above-described embodiment, the detailed description is omitted here.
Hereinafter, the characteristic portions of the present embodiment will be described with reference to FIGS.

As shown in FIG. 16, the stapler according to the present embodiment further includes a flag 12 for detecting that the binding frontage of the stapler is substantially open and a first detecting unit including a sensor S1, and further includes the first detecting unit. There is a second detection unit including a flag 13 for detecting a predetermined frontage (maximum frontage) of the stapler and a sensor S2 in the detection area of one detection unit.

When the driving time from the start of the motor M1 to the detection by the sensor S1 is longer than a predetermined time, the stop control of the motor M1 is immediately performed. , The stop control of the motor M1 is performed after the sensor S2 detects the stop control.

FIG. 17 shows the swing timing of the driver section and the magazine section on the swing side of the stapler and the sensor S1.
And the relationship between ON / OFF timing of the sensor S2. As can be seen from FIG. 17, the sensor S1 has a detection area before the driver section and the magazine section reach the top dead center (maximum frontage) area (a displacement area after the sensor is turned on and reaches the top dead center area). The sensor S2 has only the top dead center area as a detection area.

Hereinafter, operation control of the stapler will be described with reference to FIG.

As shown in FIG. 18, first, at step 31, it is determined whether or not the operation is necessary based on the state of the detection sensor S2. If it is ON, nothing is performed, and if it is OFF, the process proceeds to step 32. Then st
If the detection sensor S1 is ON at ep32, the motor M1
Is started (step 33), and the motor M1 is stopped when the detection sensor S2 detects (steps 34 and 35). Thereby, the overrun of the stapler can be prevented, and the predetermined frontage (maximum frontage) can be maintained.

Next, at step 32, the detection sensor S1 is turned off.
In the case of (1), the process proceeds to step 36, similarly to the first embodiment, the motor M1 is started (ON), and at the same time, the operation timer is started (step 37), and the time until the sensor S1 is turned on is measured (step 38). ).

If the drive time from the start of the motor M1 in step 39 until the sensor S1 is turned on is within a predetermined time (100 ms in this embodiment), the process proceeds to step 40 and the motor is turned on by the detection sensor S2 being turned on. Stop M1 (step4
1).

If the drive time from the start of the motor M1 to the turning on of the sensor S1 in step 39 is equal to or longer than a predetermined time (100 ms in this embodiment), the process proceeds to step 41 and the motor M1 is immediately stopped.

Therefore, in the initial operation after the processing such as a staple jam, for example, the stapler is driven for the overrun of the stapler in normal use, and then the stop control of the motor M1 is performed. )
Can be held.

[Other Embodiments] In the above-described embodiment,
Although a bin moving type sorter has been described as an example of the sheet processing apparatus, the present invention is not limited to this. For example, the same effect can be obtained by applying the present sheet bundle binding device to a bin fixed type sorter.

In the above-described embodiment, an electrophotographic copying machine is exemplified as a form of the image forming apparatus. However, the present invention is not limited to this. For example, a facsimile apparatus having a transmission / reception function, an information processing apparatus such as a computer, etc. The same effect can be obtained by applying the present sheet bundle binding device to these devices or a sheet processing device used by being connected to the devices.

[0072]

As described above, according to the present invention,
In accordance with the drive time from the activation of the drive unit to the detection by the detection unit, the stop control of the drive unit is different, for example, during normal use of actually hitting a sheet bundle, the detection unit The overrun is prevented by performing the stop control of the driving unit simultaneously with the detection of, and in the initial operation after the processing such as the needle jam, the stop control is not performed immediately even after the detection of the detection unit. In addition, by performing stop control of the driving unit after a predetermined time has elapsed, the binding frontage can be held at the predetermined frontage. Accordingly, the binding performance is improved, the conventional reversing circuit can be eliminated, and the cost can be reduced.

Further, there is provided a first detecting portion for detecting that the binding frontage is substantially open, and a second detecting portion for detecting the maximum frontage of the binding frontage within a detection area of the first detecting portion. For example, during normal use of actually hitting a sheet bundle, overrun is prevented by performing stop control of the driving unit at the same time as detection of the first detection unit, and after processing such as a staple jam. In the initial operation, the stoppage is not immediately performed even after the detection of the first detection unit, and the stoppage of the driving unit is performed after the detection of the second detection unit, so that the binding frontage is closed. It can be held with a predetermined frontage. Therefore, in any case, a predetermined binding frontage is always obtained, and the binding performance is stabilized.

[Brief description of the drawings]

FIG. 1 is a top view of a stapler.

FIG. 2 is a side view of the stapler.

FIG. 3 is a configuration diagram of a detection unit including a flag and a sensor.

FIG. 4 is a schematic perspective view of a swing drive unit of the stapler.

FIG. 5 is a schematic side view of a swing drive unit of the stapler.

FIG. 6 is a perspective configuration diagram of a sorter.

FIG. 7 is a schematic sectional view showing a schematic configuration of a sorter.

FIG. 8 is a schematic diagram of a bin unit in a sorter.

FIG. 9 is an explanatory diagram showing a sheet alignment state in a sorter.

FIG. 10 is a schematic side view of a stapler portion in the sorter.

FIG. 11 is a schematic top view of a stapler portion in the sorter.

FIG. 12 is a schematic top view of a stapler portion in the sorter.

FIG. 13 is a block diagram showing a control system of the sorter.

FIG. 14 is a flowchart illustrating operation control of the stapler according to the first embodiment.

FIG. 15 is a flowchart illustrating operation control of the stapler according to the first embodiment.

FIG. 16 is a top view of the stapler according to the second embodiment.

FIG. 17 is a timing chart showing a relationship between swing timings of a driver unit and a magazine unit and ON / OFF timings of two sensors in the stapler according to the second embodiment.

FIG. 18 is a flowchart illustrating stapler operation control according to the second embodiment.

FIG. 19 is a timing chart showing operation control of a conventional stapler.

FIG. 20 is a timing chart showing operation control of a conventional stapler.

FIG. 21 is a flowchart showing a conventional stapler operation control.

FIG. 22 is a flowchart showing operation control of a conventional stapler.

[Explanation of symbols]

 B: Bin Ba: Base end Bb: Sheet storage unit M: Image forming apparatus M1: Motor P: Sheet L1: Display S1, S2: Rotational position detection sensor S3: Sheet detection sensor S6: Stapler positioning sensor S7: Stapler operation Position sensor S8 ... Stapler paper sensor S9 ... Alignment bar home position sensor S12 ... Door switch S13 ... Manual staple button 2 ... Frame 3 ... Gear train 4 ... Swing shaft 5 ... Eccentric cam 6 ... Swing lever 6a ... Roller 7 ... Magazine Part 8: Cartridge 9: Discharge roller 10: Driver part 11: Anvil part 12, 13, Flag 20: Control part 101: Sorter 102: Side plate 103: Base 105: Cover 106: Body 109: Bin unit 110: Carriage entrance 111: Loading roller pair 112: Non-sort path 113: Sort path 115: Non-sort discharge roller pair 116: Sort discharge roller 117… Stapler 117A… Stapler 118… Stapler door 122… Hook 123… Spring 125,126… Guide roller 129… Cam drive motor 130… Detent means 131… Rotating shaft 132… Lead cam 133… Pulley 134… Bearing 135… Belt 136… Frame 137… Vertical frame 139… Bin cover 140… Bin unit case 141… Alignment reference plate 142… Center shaft 143… Alignment rod 146… Engaging plate 147… Roller support pin 149… Bin roller 150… Long hole 152… Long groove 160… Support plate 161 ... lower arm 162 ... upper arm 163 ... upper rotating shaft 165 ... sector gear 166 ... alignment rod drive motor 167 ... output gear 169 ... light shielding plate 179 ... shaft 180 ... swinging board 181 ... staple board 182 ... reduction gear group 183 ... Gear box 185… Swing motor 186… Gear 187… Link disk 188… Stapler moving part 189… Link arm 190… Spring 191… Sensor operating arm 192… Mounting base Board

Claims (7)

[Claims] A driver for punching a needle for each needle; an anvil for bending the needle in cooperation with the driver; a driver for swinging the driver relative to the anvil; A drive control unit that controls the start and stop of the unit, and a detection unit that detects that a binding front formed by the driver unit and the anvil unit is substantially open. The driver unit and the anvil At the time of the initial operation to make the binding frontage formed with the unit the maximum frontage, according to the drive time from the activation of the drive unit to the detection by the detection unit,
A sheet bundle binding device, wherein stop control of the driving unit is made different. 2. When the drive time from the activation of the drive unit to the detection by the detection unit is equal to or longer than a predetermined time, stop control of the drive unit is immediately performed. The sheet bundle binding apparatus according to claim 1, wherein the stop control of the driving unit is not performed immediately. 3. When the driving time from the activation of the driving unit to the detection by the detection unit is within a predetermined time,
3. The sheet bundle binding device according to claim 2, wherein the stop control of the driving unit is performed after a further predetermined time has elapsed. 4. When the drive time from the activation of the drive unit to the detection by the detection unit is within a predetermined time,
The sheet bundle binding device according to claim 2, wherein stop control of the driving unit is performed after the next detection by the detection unit. 5. A driver for punching a needle for each needle, an anvil for bending the needle in cooperation with the driver, a driver for swinging the driver relative to the anvil, and a drive for driving the driver. A drive control unit that controls driving and stopping of the unit, a first detection unit that detects that a binding front formed by the driver unit and the anvil unit is substantially open, and a detection area of the first detection unit. A second detection unit that detects a maximum frontage of the binding frontage within, at the time of an initial operation to make a maximum binding frontage formed by the driver unit and the anvil unit, from the activation of the driving unit. According to the driving time until the detection unit detects,
A sheet bundle binding device, wherein stop control of the driving unit is made different. 6. When the drive time from the activation of the drive unit to the detection by the first detection unit is a predetermined time or more, stop control of the drive unit is immediately performed, and the control is performed within the predetermined time. 6. The sheet bundle binding apparatus according to claim 5, wherein in the case, the stop control of the driving unit is performed after the second detection unit detects the stop control. 7. A sheet processing apparatus for performing processing such as sorting and alignment of sheets conveyed out of an image forming apparatus main body, wherein the sheet processing apparatus has the sheet bundle binding apparatus according to any one of claims 1 to 6. A sheet processing apparatus.