JPH06143861A - Automatic sheet material binding device - Google Patents

Abstract

PURPOSE:To uniformize the punching force at the time of the punching of sheet materials and to prevent the shift of the sheet materials and punching sound. CONSTITUTION:Recessed parts 17c, 17g are formed by outer corner parts 17b1, 17b2 mutually opposed at diagonal positions and a pair of inclined surfaces containing the diagonal line 17i connecting inner corner parts 17d, 17f deflected inside to be mutually opposed at diagonal positions are formed to the leading end part of a punch punching sheet materials. When a sheet bundle is punched by the punch 17, the outer corner parts 17b1, 17b2 are bitten in the sheet materials to prevent the positional shift of the punch with respect to the sheet materials and punching force becomes uniform and the generation of punching sound is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material binding apparatus, and more particularly, to a sheet material binding apparatus for performing binding operation on sheet materials by means of elastic body binding members.

[0002]

2. Description of the Related Art Conventionally, a binding member made of a general plastic material, in which a large number of finger members extending laterally in a substantially annular shape are formed on a linear spine, is punched by a punching means. There has been proposed an automatic sheet material binding device that automatically binds to a hole in a material.

According to this automatic sheet material binding device, the shape of the upper blade, that is, the tip of the punch is formed in an arc shape as shown in FIG. 23 (a), or as shown in FIG. 23 (b). , Was formed on the inclined surface.

[0004]

However, as shown in FIG.
With an arcuate blade edge as shown in (a), when punching a bundle of thick sheet material, the force required when punching out the sheet material becomes greater than when the blade edge begins to enter the sheet material. However, at the moment when the sheet material is punched out, the force required for punching is diverged to generate noise.

Further, in the case of the inclined surface as shown in FIG. 23 (b), if the thickness of the sheet material becomes thicker, the bundle of sheet materials will shift when punching or when the cutting edge enters the sheet material. There was a flaw.

Therefore, according to the present invention, the punching force when punching the sheet material is uniform and the punching force is uniform by forming the concave portion on the side surface of the tip portion of the punch by the inclined surface which linearly gradually decreases inward from both diagonal ends. An object of the present invention is to provide a sheet material automatic binding device capable of preventing material deviation and punching noise.

[0007]

The present invention has been made in view of the above circumstances. For example, referring to FIGS. 5 and 6, a punch (1) for punching a sheet material (2) will be described.
7) and a die (10) through which the punch (17) is inserted, the sheet material automatic binding device (1) provided with a punching portion (3), wherein the tip of the punch (17) is viewed from the bottom. A diagonal line (17) that connects the inner corners (17d, 17f) that are rectangular and deviate toward the base end side and face each other at a diagonal position.
i) or a diagonal line parallel to this diagonal line and each outer corner portion (17b ₁ , 17b) facing each other at a diagonal position outside the tip portion.
b ₂ ), a pair of inclined surfaces (17h ₁ and 17h ₂ ) connecting
It is characterized by having recesses (17c, 17g) formed by.

[0008]

According to the above construction, when the bundle of sheet materials (2) is punched by the punch (17), the punch (1)
7) is punched into the bundle of sheet materials (2) from both diagonal ends (17b ₁ and 17b ₂ ) of a predetermined vertical section of the punch (17). Further, the punching force of the punch (17) for punching the sheet material (2) is substantially uniform, and deviation of the bundle of the sheet material (2) and punching sound do not occur.

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

[0010]

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

As shown in FIG. 1, the sheet material automatic binding device 1 is provided with a punching section 3 for punching a bundle of sheet materials 2, a transport section 5 for transporting the punched bundle of sheet materials 2, and a punching section. And a ring opening / closing part 7 for opening / closing the ring 6 for binding the bundle of the conveyed sheet materials 2, each of which is arranged on the base 1a of the apparatus 1.

First, the perforated portion 3 is formed in FIGS. 1 and 9 to 1.
This will be described with reference to FIG. As shown in FIG. 1, the sheet material 2
The die 10 is disposed in the vicinity of the mounting table 9 of
A sensor lever 11a for detecting the presence of the sheet material 2 is attached by looking up from below to above the sensor lever 1
A sensor 11 for detecting the presence of the sheet material 2 by the movement of the sensor lever 11a is provided below the la 1a. Further, as shown in FIG. 9, the die 10 is provided with a large number of square punched holes 10a, and two through holes 10b are provided on the downstream side thereof. A pair of short stoppers 12a for positioning the end of the sheet material 2 by abutting against the through hole 10b.
And a pair of long stoppers 12b are provided so as to be retractable, the pair of stoppers 12a are integrally connected to each other, and the pair of stoppers 12b are also integrally connected to each other. Solenoids 13a and 13b for lifting at this time are provided, and the stoppers 12a and 12b are driven by the solenoids 13a and 13b, respectively. The relationship between the distances l ₁ and l ₂ between the punched hole 10a and the bent pieces of the stoppers 12a and 12b is l
₁ <l ₂ (This stopper is not limited to two sets).

Further, as shown in FIG. 11, the punch 17 is guided by the guides 19 and 20 and descends to penetrate the punching hole 10a of the die 10. 12 and 1
3, the die 10 is fixed to the die base 21, the guides 19 and 20 are fixed to the support base 22, and the support base 22 is fixed to the die base 21. In addition, the sleeves 2 are attached to the upper portions of both end portions of the support base 22.
3, the push rod 25 is guided to the lower portion, the pressing plate 26 is fixed to the lower end of the push rod 25, the push rod 25 is slidably attached to the sleeve 23, and the push rod 25 is slidably attached to the sleeve 23. A compression spring 27a is interposed between the push rod 25 and the upper end of the push rod 25, and a coiled compression spring 27b inserted in the push rod 25 is interposed between the flange 25a of the push rod 25 and the support base 22. Further, a pusher base 29 is provided, the upper end of the punch 17 is attached to the pusher base 29, and further, the sleeve 23 is pressed downward, and shafts 29a are projectingly provided at both ends thereof. A protrusion 23a is attached to the punch 17, and a limiting piece 29b attached to the push base 29 is brought into contact with the punch 17, so that the punch 17 is lifted when the push base 29 is raised. Further, the lock plate 31 engaged with the notch 26a of the pressing plate 26 is formed in a hook shape, and the claw 31a is provided on the tip vertical part piece. The lower end of the vertical piece is pivotally supported by a pin 32, the projection 31b of the upper end of the proximal end vertical piece is locked in the elongated hole 33a of the release link 33, and the upper end of the release link 33 is pushed by the push base 29. It is pivotally supported by an arm 35 extending downward from the above, and the push plate 26 is engaged and disengaged by a claw 31a of a lock plate 31.

Here, the shape of the tip portion (blade portion) of the punch 17, which is an essential part of the present invention, will be described with reference to FIGS.

The front end of the punch 17 has both side surfaces 17a.
_One of the outer corner portions 17b ₁ and 17b ₂ facing each other at the diagonal position of ₁ and 17a ₂ and located on the outer side (lower side in FIG. 5)
And inner corner portions 17d and 17f located inside (upper side in the figure) of the outer corner portion and facing each other at a diagonal position.

Diagonal line 1 connecting the inner corners 17d and 17f
And 7i, inner corner portion 17d, at 17f and the outer corner portion 17b ₁ and the city with a line connecting a triangular inclined surface 17h ₁ (see FIG. 6 (c))
Is formed, and the diagonal line 17i and the inner corner portion 17 are similarly formed.
A triangular inclined surface 17h ₂ is formed by the lines connecting d, 17f and the outer corner portion 17b ₂ . By cutting the tip portion of the punch 17 so as to have these two inclined surfaces 17h ₁ and 17h ₂ , recesses 17c and 17c are formed in the tip portion.
g is formed.

By forming the recesses 17c and 17g having such a shape, the punch 17 is formed on the sheet material 2 by the two diagonal corners 17b ₁ and 17b ₂ even if the bundle of the sheet material 2 is thick. At the same time, since the punch 17 starts to be driven, it is possible to punch the sheet material 2 without causing a deviation of the bundle of the sheet materials 2.

Further, the force required from the start to the end of punching 17 becomes uniform, and the punching force for punching sheet material 2 does not cause noise due to the punching force diverging at the moment of punching the bundle of sheet materials 2. It can be performed.

This can be explained as follows.

Now, when the punch 17 rides on the sheet material 2 and the outer corner portion 17b _{1 at} the lower end begins to bite into the sheet material 2, the outer corner portion 17b ₁ moves to the original and the inclined surface 17h ₁ The sheet material 2 exerts a force to move in the opposite direction to the outer corner portion 17b ₂ . Similarly, the outer corner 17
When b ₂ begins to bite into the sheet material 2, the outer corner portion 17 b ₂
The sheet material 2 exerts a force to move in the opposite direction to the outer corner portion 17b ₁ by the inclined surface 17h ₂ . However, these forces cancel each other out and the punch 17 moves in the direction directly below, so that the holes to be punched are not displaced.

The punched holes made in the sheet material 2 by the punches 17 are square holes, and the four corners of the holes are 17b.
It can be considered that it is cut at the straight line portion connecting the four lower ends of ₁ , 17d, 17b ₂ and 17f, and at this time, the same force is used to open the hole from the beginning to the end.

From this, without causing a bundle deviation,
The punching force is also kept constant. According to the experiment, the inclination angle of the vertical cross-sectional shape of the punch 17 is 10 ° to 80 °.
It has been confirmed that the sharpness is good in the interval.

Further, with reference to FIGS. 2, 3 and 4, the structure for driving the punch 17 of the punching portion 3 by a motor will be described.

The upper ends of the links 15 are locked to the shafts 29a provided on both sides of the push base 29 described in FIG. 12, and the lower ends of the links 15 are attached to the ends of the arms 16 by the pins 16a.
And the other end of this arm 16 is
It is pivotally supported on a by a pin 16b. And base 1a
The shaft 90a of the motor 90 attached to the sprocket 9
1 is provided. Further, cams 93 are attached to both ends of a shaft 92 horizontally supported on the base 1a, and a sprocket 94 is attached to one end so as to face the sprocket 91.
5 are stretched.

As shown in FIG. 3, a roller 96 that follows the cam 93 is attached to the arm 15 on the side of the link 15. Thus, when the cam 93 is rotated in the direction of arrow C and the roller 96 is pressed by the profile surface of the cam 93, the punch 17 is pressed via the link 15, the shaft 29a, and the press base 29.

The cam surface of the cam 93 has a gradually increasing cam stroke (this profile can be arbitrarily formed by the stroke of the punch 17 and the output of the motor 90). Further, one rotation of the cam 93 completes one punching operation.

A sensor lever 97 is attached to the link 15, and an upper limit sensor 37 and a lower limit sensor 39 are attached to the upper and lower limits of movement of the sensor lever 97, and the fixed pin 98 and the arm 16 are attached. A return member 99 is attached between the pin 16c and the pin 16c, and the punch 17 is biased upward via the arm 16, the link 15, the shaft 29a, and the pusher 29.

Next, the transport unit 5 is moved to FIGS. 1 to 6 and 10.
And FIG. 14 will be described.

A conveying roller 40a, which is seen from below to above the mounting table 9 for the sheet material 2, is rotatably attached to the apparatus 1 and is rotationally driven by the motor 8. A pickup lever 41 is pivotally supported at its intermediate portion on a pin 41a fixed to the device 1, and a lower end portion of the pickup arm 42 is pivotally supported on the lever 41 by a pin 41b on the left side of the shaft 41a. The upper conveyance roller 40b is pivotally supported at the left end of a lever 44 whose right end is rotatably attached to the lever 41 by a shaft 41a, and the right end of the lever 44 is integrally formed with a gear 48a and the gear 48a. A concentric pulley 48b is rotatably supported by a shaft 41a, and a gear 54a meshing with the gear 48a and a concentric pulley 54b integral with the gear 54a are provided.
An integral pulley 54c is provided concentrically with, and an integral pulley 48c is provided concentrically with the upper conveying roller 41b. Then, the pulley of the motor 8 and the pulley 54c,
Pulley 54c and pulley 54b, pulley 48b and pulley 4
8c, and belts 8a, 8b, 8c are respectively wound around them, and when the upper and lower conveying rollers 40a, 40b sandwich the sheet material 2 by the clockwise rotation of the motor 8, the sheet material 2
Is conveyed to the right. Also, the lever 41
The tension spring 41d is attached to the
It is designed to urge clockwise around a.
The arm 42 is biased upward via the pin 41b. Further, a hook 46 is pivotally supported by a pin 45 fixed to the device 1, and a lever 4 is attached to a locking portion 46 a of the hook 46.
The protrusion 41c at one end of the vertical portion 1 is engaged. The other end of the hook 46 is the core rod 47 of the solenoid 47.
When the solenoid 47 is turned on, the hook 46 is pivotally supported by the tip of a, and the hook 46 is rotated clockwise, and the hook 46 is rotated from the right side of the protrusion 41c to the protrusion 41c. When the solenoid 47 is turned off, the hook 46 is rotated counterclockwise. Then, it comes off from the protrusion 41c. In addition, the arm 42 is the push base 2 described above.
It moves up and down in conjunction with 9. When the arm 42 is lowered against the upward biasing force, the left side portion of the lever 41 is lowered, and the lever 4 moves from the locking piece 41e provided on the lever 41.
4, the upper transport roller 40b presses the lower transport roller 40a by its own weight together with the lever 44. Further, an inlet guide 49 (see FIG. 14) that limits the thickness of the bundle of sheet materials 2 is fixed to the device 1 by a pin 49a.
Is rotatably supported by the stopper 49b and is rotatably supported by the stopper 49b. Note that FIG.
The reference numeral 50 of 4 is a carrier and is provided adjacent to the downstream side of the die 10. Reference numeral 51 is a ring entrance guide for preventing scattering of the front end of the bundle of sheet materials 2 to be conveyed, which is rotatably hung downward by a fixed pin 51a and counterclockwise rotated by a stopper 51b. It has been blocked. The leading edge of the sheet material 2 and the thickness of the sheet material 2 are restricted with respect to the movement of the sheet material 2 in the arrow A direction, but when the sheet material 2 is pulled out in the arrow B direction, the ring 6 is attached. However, as shown in FIG. 14 (b), it can be easily removed.

Next, the ring opening / closing portion 7 will be described with reference to FIGS. 1 to 6 and 15 to 19. An upper claw 52 extending horizontally in a comb shape and having a tip bent obliquely upward.
Is vertically guided inside the side wall of the ring opening / closing body 7a and is driven by the motor 55 via the gear train 53. Further, a plurality of lower claws 56 that project obliquely upward and are arrayed so that their leading ends are orthogonal to the transport direction of the sheet material 2 are driven by a motor 59 via a gear train 57. Further, when the ring 6 which is made of plastic and has a plurality of finger portions bent in a substantially circular shape in the lateral direction on one spine is inserted into the upper nail 52, the ring 6 The sensor lever 60 which rotates counterclockwise by the outer diameter of the sensor lever 60 is urged by its shaft 60a so as to rotate clockwise and is pivotally supported.
A plurality of ring sensors 61 that detect the ring 6 and also detect the ring size are arranged in a row below.

Further, referring to FIGS. 18 and 19, the lower claw 5
The operation mechanism of No. 6 will be described in detail. 18 is a front view and FIG. 19 is a side view.

A guide plate 63 having a groove 62 having a horizontal portion and a vertical portion on the inside of both sides of the lower claw 56 is attached to the ring opening / closing section body 7a, and the protrusion 65 of the lower claw 56 has this groove 6.
You will be guided to 2. Further, a pair of oblique grooves 66 is provided in the middle portion of the main body of the lower claw 56.
A slanting projection 67 that slides on the drive plate 70 that moves up and down. The drive plate 70 is supported by the ring opening / closing unit body 7a so as to be vertically movable, and a rack 71 is provided on the drive plate 70. The rack 71 is mounted on the gear train 5 shown in FIG.
It meshes with the end gear of No. 7. A pressing plate 72 is provided on the front side of the lower claw 56.
The drive plate 70 and the drive plate 70 are fixed to each other by a screw 75 that penetrates a bevel groove 73 in the main body of the lower claw 56.

Further, as shown in FIGS. 20 and 22, a pin 76 for rotatably supporting the main body 7a of the ring opening / closing portion 7 on the base 1a is provided, and when the main body 7a is tilted / fixed, Micro switch 77 that turns on and transmits the signal
Is provided. Further, as shown in FIG. 20, when the main body 7a is tilted and fixed, the auxiliary guide 79 is rotated counterclockwise about the pin 79a by an elastic member (not shown), so that the sheet material 2 in the manual mode is rotated. It is designed to form a guide surface. In addition, a ring opening button and a ring closing button (not shown) are attached to the base 1a of the device 1 in the device body.

Since the present invention is configured as described above, its operation will be described with reference to FIGS. 7 and 8.

First, when automatic is selected in FIG. 7, the input switch 81 is turned on, and the finger portion of the ring 6 is inserted into the upper claw 52, the sensor lever 60 rotates counterclockwise about the shaft 60a, The control unit 85 which receives the signal inserted from the sensors 61a and 61b at the same time as the size signal of the ring 6 sends the signal to the display unit 80 to display the sheet material set. On this occasion,
The controller 85 controls the solenoid 1 according to the size of the ring 6.
By turning off 3a or 13b, the stopper 12a or 12b projects into the through hole 10b of the die 10. Next, the sheet material 2 is inserted until it comes into contact with the stopper 12a or 12b. At the same time, the control unit 85, which receives the signal from the sensor 11 detected at the same time, sends a signal to the display unit 80 to perform punch display on the display unit 80. Next, when the punching switch 84 is pressed, the upper limit sensor 37 is turned off due to the disappearance of the sensor lever 97, and the control unit 85 which receives the signal sends a signal to lower the rising solenoid 13a or 13b to stop the stopper 12a. (Or 12b) is lowered. At the same time, the push base 29 moves the lever 15 and the arm 1.
6, the motor 23 is pushed down via the cam 93 and the like, the sleeve 23 is lowered against the compression springs 27a and 27b, and the holding plate 26 integral with the pushing rod 25 pushes the bundle of sheet materials 2. Then, the lowered presser plate 26 is replaced with the lock plate 31.
It is locked to the claw 31a. At the same time, the punch 17 descends to punch the bundle of sheet materials 2 on the die 10, and at the same time, the pickup arm 42 is pressed downward against the upward biasing force, so that the pickup lever 41 moves. The upper conveyance roller 40b and the lever 44 push down the bundle of the sheet materials 2 by their own weight, and the control unit 85 receives a signal from the lower limit sensor 39 which is turned on at the same time, and the solenoid 47 is turned on. Then, the lever 41 is locked through the core rod 47a, the locking portion 46a of the hook 46, and the protrusion 41c, and the punch 17 moves up. At this time, punch 17
If the lower surface of the pressing plate 26 presses the bundle of sheet materials 2 before the tip of the sheet material 2, the bundle of sheet materials 2 is pressed earlier than the start of punching of the die 10 and the bundle of sheet materials 2 is disturbed. (Displacement) can be prevented. Such adjustment is made by the compression spring 27.
This can be done by adjusting a and 27b. Even if the pressing plate 26 quickly presses the bundle of sheet materials 2, the compression springs 27a and 27b are pressed.
Is interposed, it is possible to prevent an excessive compressive force from being applied to the push rod 25 and the sleeve 23. At this time, the control unit 8 which receives the signal for the sensor lever 96 to turn off the lower limit sensor 39
5 sends a signal and opens the ring 6. On the other hand, when the sensor lever 90 turns on the upper limit sensor 37, the punch 17 has already been pulled out. Then, after the punch 17 is completely pulled out from the sheet material 2, the lock plate 31 is rotated counterclockwise about the pin 32 via the arm 35 and the release link 33 by the lifting of the push base 29, and the presser foot is pressed. The plate 26 is released from the locked claw 31a, and the holding plate 26 separates from the bundle of sheet materials 2. When the control unit 85 receives the signal that the upper limit sensor 37 is turned on and sends the signal to turn on the stepping motor 8 that drives the conveyance rollers 40a and 40b, the conveyance roller 40 is moved by a certain pulse.
a and 40b, the leading edge of the bundle of sheet materials 2 is prevented from being disturbed by the ring entrance guide 51 on the way and is stopped at a proper position with respect to the opened link 6 shown in FIG. 6 closes. The control unit 8 which receives the signal to stop the stepping motor 8
5 sends a signal to turn off the solenoid 47, and the protrusion 41
c is disengaged from the engaging portion 46a, and the upper conveying roller 40b is engaged with the engaging piece 41e of the lever 41 by the urging force of the tension spring 41d.
It can be lifted via the lever 44. After the ring 6 is closed, a stitching completion display is displayed on the display unit 80, and the stitching work is completed.

After the work is completed, the operator manually pulls out the bound sheet material 2 in the direction opposite to the direction in which the sheet material 2 was conveyed. At this time, the entrance guide 49 and the ring entrance guide 51
Rotates clockwise and does not resist (see Fig. 14 (b)).

Next, the operation of the lower claw 56 will be described with reference to FIGS.
In the following, when the rack 71 is lowered by the motor 59 via the gear train 57 shown in FIG. 1, the drive plate 70 is guided by the guide plate 63 and moves down. Then, the oblique projection 67 of the drive plate 70 applies a component force to the right in FIG. 18 to the lower claw 56 via the oblique groove 66. Then, the protrusion 65 of the lower claw 56 is guided by the horizontal portion of the groove 62 of the guide plate 63, moves to the right, and becomes in a state of being engageable with the finger portion of the ring 6, and then by the downward component force. Guided by the vertical portion of the groove 62, the lower claw 56 descends to open the finger portion of the ring 6 downward. When the rack 71 is pushed upward by the motor 59,
In contrast to the above, the lower claw 56 moves. The pressing plate 72 is integrated with the drive plate 70 via the screw 75 and always holds the lower pawl 56. For this reason, the screw 75 moves in the same manner as the oblique projection 67, and therefore, the oblique pawl hole 73 similar to the oblique groove 66 is provided in the lower claw 56.

In the above-described embodiment, the sheet material 2 that has been bound is pulled out manually in the direction opposite to the conveying direction. However, when the sheet materials 2 have been bound, the upper feeding roller 40b is turned on by the solenoid 47. Is turned off, and when the binding completion display is displayed on the display unit 85, the motor 8 for driving the transport rollers 40a and 40b is reversely rotated to automatically pull out the bound sheet material 2. You may

By doing so, labor saving and time saving of the binding work can be improved.

Next, the operation of the manual mode will be described. Figure 2
0, as shown in FIG. 22, when the main body 7a is tilted around the pin 76 and fixed, an ON signal of the microswitch 77 is issued, and the control unit 85 receiving this signal switches the control system to the manual mode. Then, the auxiliary guide 79 is pin 79
The sheet material 2 is rotated clockwise around a to support and guide the sheet material 2 in the manual mode. In this mode, if the punching ability of the punch 17 or the like is insufficient with respect to the stitching ability of the ring 6, punching is performed many times and additional stitching is required. In addition, there is a case where it is desired to perform replacement or the like, and this mode is used when there is inconvenience only in the automatic mode.

In the manual mode, since the sheet material 2 is not automatically conveyed, the ring 6 is opened and closed by operating a ring opening button and a ring closing (not shown). The amount of opening is determined by the operator. The opening amount for the ring 6 is memorized by the control unit 85 as in the case of the automatic mode, so that the operator can press the ring opening button as many times as he thinks is most appropriate to obtain the opening amount of the ring 6 (if the ring Even if the opening button is pushed too much, it will not become larger than the amount of opening remembered by the device). When the work is completed, the ring closing button is pushed to perform the closing operation and the work is completed.

When it is desired to add / replace the sheet material 2, set the sheet material 2 under the upper claw 52 as shown in FIG. 21 (a) and operate the ring opening button to display the sheet material 2 as shown in FIG. 21 (b). The sheet material 2 can be removed freely, and the sheet material 2 can be freely added or replaced.

By tilting the main body 7a, the visibility can be improved and the usability can be expanded.

[0044]

As described above, according to the present invention,
A recess is formed by a pair of inclined surfaces including an outer corner portion facing diagonally opposite positions and a diagonal line connecting inner corner portions offset inward and facing each other diagonally at the tip of a punch for punching a sheet material. When punching a sheet bundle by punching, the outer corners that are diagonally opposed to each other bite into the sheet material to prevent the punch from being displaced relative to the sheet material, and it is necessary from the beginning to the end of punching the sheet material. The resulting punching force becomes uniform, and the occurrence of divergence at the moment when the sheet bundle is punched can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an automatic sheet material binding device according to an embodiment of the present invention.

FIG. 2 is a front view of the punch driving mechanism.

FIG. 3 is a side view of the apparatus of FIG.

FIG. 4 is a side view of the cam drive section.

FIG. 5 is a perspective view of the punch.

FIG. 6 is also a drawing relating to punches, in which (a) is a side view,
(b) Figure is front view, (c) Figure is bottom view

FIG. 7 is a flowchart in the same automatic mode.

FIG. 8 is a block diagram of the control system of the same.

FIG. 9 is a perspective view showing a die and a stopper.

FIG. 10 is a side view of the punched portion.

FIG. 11 is an enlarged side view showing the relationship between the die, the punch and the stopper.

FIG. 12 is a side view of the sheet material pressing mechanism.

13 is an enlarged perspective view of the apparatus of FIG.

FIG. 14 is also a side view of the conveying unit, where (a) is a state in which sheet materials are conveyed, and (b) is a side view showing a state in which bound sheet materials are extracted.

FIG. 15 is a perspective view of the upper and lower claws.

FIG. 16 is a side view showing a state in which the ring is also inserted into the upper pawl.

FIG. 17 is a side view showing a state in which the ring is also opened.

FIG. 18 is an enlarged front view of the lower nail operating mechanism.

19 is a side view of the apparatus of FIG.

[FIG. 20] Similarly, some of the opening / closing body 7a in the manual mode

21 (a) is an explanatory view showing a state in which the ring is closed in the manual mode, and FIG. 21 (b) is an explanatory view showing a state in which the ring is opened in the manual mode.

FIG. 22 is a side view of the same when the opening / closing body 7a is opened in the manual mode.

FIG. 23 is a perspective view showing an example of the shape of a conventional punch.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 sheet material automatic binding device, 2 sheet materials, 3 perforation means (perforation part), 5 conveyance means (conveyance part), 6 binding member (ring), 7 binding means (ring opening / closing part), 17 perforation member ( Punch), 17b ₁ , 17b ₂ Outer corners 17d, 17f Inner corner 17i Diagonal line (connecting inner corners) 17h ₁ , 17h ₂ Inclined surface 17c, 17g Recess

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Kimiaki Hayakawa 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (1)

[Claims] 1. A sheet material automatic stitching apparatus comprising a punching portion having a punch for punching a sheet material and a die through which the punch is inserted, wherein the tip end portion of the punch has a rectangular shape in a bottom view. A diagonal line connecting the inner corners that are offset to the end side and diagonally opposed to each other, or a diagonal line parallel to this diagonal line, and each outer corner portion that is opposed to the diagonal position outside the tip portion, An automatic sheet material binding device having a concave portion formed by a pair of inclined surfaces connecting the sheets.