JP3029493B2 - Saddle stitcher feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeder for a saddle stitching machine that performs a stapling mode with a relatively small number of pages, such as a weekly magazine or a catalog.

[0002]

2. Description of the Related Art In general, a saddle stitching machine includes a plurality of feeders for dropping a printed book one by one to a predetermined position on a gathering chain, a wire binding machine for binding a sequentially bound printed book together with a cover, and a binding machine. It has a configuration in which the top and bottom of the printed book and a three-way cutting machine that cuts and finishes the fore edge at one time are connected,
Among them, a feeder as shown in FIG. 3 is conventionally used.

[0003] In a feeder F shown in FIG. 3, a gathering chain 31 is driven and a drum 3 for dropping a printed book is provided.
2, 33 and 34 are driven by the same motor 36 via a speed reducer 35, whereby one pitch of the gathering chain 31 and the drum 3
One rotation of 2, 33, 34 is synchronized. In general, in a saddle stitching machine, a print book is dropped on the gathering chain 31 every cycle, and a print book is dropped once every few times (mainly once every two times). However, in the feeder F shown in FIG. 3, whether the gears 40 and 41 of A or the gear 43 of B are engaged by switching the clutch manually. Has become. When the size of the printing book changes or the rotation speed of the saddle stitcher changes, the drum 32,
33 and 34 of the drum shaft 32a, 33a, 34a and removed once as shown in FIG manually engaging clutch mechanism of gears 38 to 43 between the drive shaft 3 7, the drum by hand 32,3
The timing at which the printed book falls is changed by changing the position of the engagement by turning 3, 34.

[0004]

In the feeder described in the prior art, when the saddle stitcher is operating, both the drive shaft and the drum shaft are rotating, so that the meshing position of the gears can be changed. However, there is a problem that the timing cannot be adjusted. Also, when adjusting the timing during stoppage, the operator is operating while rotating the heavy drum, and there is no adjustment standard, so when adjusting it, move the saddle stitcher and look at the situation, if it is insufficient, The work of stopping and re-adjusting was repeated many times. For this reason, the production efficiency is poor, and the adjustment of the timing of dropping the prints of the feeder is the most bottleneck in the bookbinding process by the saddle stitcher. Further, in the conventional feeder, the adjustment pitch depends on the number of teeth of each gear, and the pitch of the gear is about 8 degrees in a general feeder. There was also a problem that only rough adjustment was possible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the timing of dropping a book onto a gathering chain regardless of whether the saddle stitcher is operating or stopped. The present invention is to provide a feeder for a saddle stitcher which can automatically adjust the drop timing and also adjust the drop timing optimally.

[0006]

According to the present invention, a feeder is driven by a drive motor via a booklet drop timing adjusting mechanism, and a print set on the feeder is provided. in feeder Flip machine in to drop to a predetermined position on the part by gathering chain,
A phase adjuster capable of changing a phase of an input section and an output section is provided in the print book drop timing adjusting mechanism section.

[0007] Then, book blocks fall to definitive to the above-mentioned feeder
Between the input and output of the timing adjustment mechanism , when the book is dropped at a predetermined position of the gathering chain every cycle,
It is possible to provide a clutch mechanism that switches between dropping once every several times and not dropping.

Further, in order to automatically adjust the timing of dropping the printed book, a gathering chain position detecting means for detecting the position of the feed blade of the gathering chain, a drum position detecting means for detecting the drum rotation position of the feeder section, and both of them. It is also possible to add a means for calculating the required amount of rotation of the adjusting motor from the amount detected by the detecting means to adjust the phase.

[0009]

In the feeder having the above configuration, the phase adjustment is performed.
The Rukoto actuating the Seiki, changed the phases of the input shaft and the output shaft in the book blocks fall timing adjusting mechanism, thereby book blocks fall timing in the feeder is adjusted.

[0010] In the case where the clutch mechanism is provided, the rotation ratio between the input shaft and the output shaft in the print book drop timing adjusting mechanism is changed.

[0011]

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

FIG. 1 is a schematic view showing a feeder according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a mechanism for adjusting the timing of dropping a printing book in the feeder.

As shown in FIG. 1, the feeder F is composed of a print book drop timing adjusting mechanism 10 connected to the drive motor 1 and a feeder 20 connected thereto.
When the motor 1 is driven, the printing books set on the upper portion of the feeder unit 20 are sequentially dropped to a predetermined position on the gathering chain 2. In FIG. 1,
Components such as a guide and a printed book on the upper part of the feeder unit 20 are not shown.

The drive motor 1 rotates two shafts via a speed reducer 3. That is, both the rotating shaft 4 that circulates and moves the gathering chain 2 and the input shaft 11 of the print book drop timing adjusting mechanism 10 rotate. The rotation shaft 4 and the input shaft 11 are connected to the feeder unit 20.
Feed blade 2a of the drum shaft 21, 22, 23 hooking the book blocks in gathering chain 2 is rotated 1 you rotate so as to move a predetermined pitch.

Two sprockets 11a and 11b are provided on the input shaft 11 of the booklet drop timing adjusting mechanism 10.
The sprockets 11a and 11b are connected to the sprockets 12a and 13a mounted on the clutches 12 and 13, respectively, during driving.
15 to rotate. When the input shaft 11 rotates, the clutch shaft 16 rotates one rotation or two rotations.
The sprocket 11a has 30 teeth, the sprocket 12a has 15 teeth, the sprocket 11b has 19 teeth, and the sprocket 13a has 19 teeth so as to rotate. Thus, when both the clutch 12 and the clutch 13 are disconnected, the input shaft 11 and the clutch shaft 16 are disengaged.
Is 1 to 0, and when the clutch 12 is connected and the clutch 13 is disconnected, the input shaft 11 and the clutch shaft 16 rotate at a ratio of 1: 2. Further, when the clutch 12 is disconnected and the clutch 13 is connected, the drive shaft 11 and the clutch shaft 16 rotate at a ratio of 1: 1. It should be noted that the clutch 12 and the clutch 13 are provided with an electric interlock mechanism so as not to be connected at the same time, and the clutch 12 and the clutch 13 use an electromagnetic tooth type clutch in order to eliminate slippage and reduce the size. ing.

Here, it is conceivable to use a timing belt and a pulley to transmit the rotation from the input shaft 11 to the clutch shaft 16, but the torque for rotating the drum 21 of the feeder section 20 is about 7 kgfm. Because it ’s big
If a timing belt and a pulley are used, the belt width becomes large (about 50 mm) and the whole apparatus becomes considerably large. Therefore, in this embodiment, a transmission method using a sprocket and a chain that can transmit a large torque with a small size is adopted. ing. However, if there is no problem in dimensions, a transmission method using a timing belt and a pulley may be adopted. In addition, transmission methods using gears,
Other methods may be used.

A gear 16a is mounted on the clutch shaft 16, and the gear 16a is engaged with one gear 17a of the phase adjuster 17. Also, the phase adjuster 1
The other gear 17b of the seventh gear meshes with one gear 18a attached to the intermediate shaft 18.

In this embodiment, a commercially available differential unit manufactured by Harmonic Drive Systems is used as the phase adjuster 17. This adjusts the phase
This is a device that is widely used for
When applied, a constant reduction ratio for the drive input from the output unit
Is output. Also, rotate the adjustment part inside.
It is a mechanism that the phase of the input unit and the output unit are shifted by
Direction shifted phases are Ru determined Merare <br/> in the direction you want to rotate. The adjustment unit. That is, the phase can be delayed or advanced. In this embodiment, every time the input unit makes one rotation, the output is performed.
The force part is equivalent to 260/261 rotations, ie, 260/261
It rotates at the reduction ratio, and every time the adjustment unit rotates once, it comes out of the input unit.
The force part is rotated by 1/260, that is, 1.38 degrees (1/26
(0x360 degrees). The position is
The phase adjustment shaft 17c passes through, and this phase adjustment shaft 17c
By rotating, the phases of the input and output sections can be shifted.
Wear. Further, an adjustment motor 17 is provided on the phase adjustment shaft 17c.
d (torque: 0.07 kgf · m), and the phase is automatically adjusted by the rotation of the motor 17 d.
It is a mechanism that can be adjusted . Moreover, the motor 17d is equipped with a brake, when no phase adjustment is made to braking, not out of phase.

A gear 17a is provided at the input of the phase adjuster 17.
A gear 17b is attached to the output part.
Are attached to each other to transmit the drive. In the phase adjuster 17 used here, as described above,
Even when the adjustment shaft 17c is not rotating, the output unit,
The gear 17b is connected to the input or gear 17a by 260
/ 261, the gears 16a, 1
The number of teeth of 7a, 17b and 18a is 54, 60 and 5 respectively.
8, 52, the rotation ratio between the gear 16a and the gear 18a is 1: 1. In this case, the relationship between each gear
It is shown in the following equation .

Gear 16a / Gear 17a × (of the phase adjuster)
(Reduction ratio) × gear 17b / gear 18a = 54/60 × (2
60/261) × 58/52 = 1

With the above configuration, the drive of the clutch shaft 16 is transmitted to the intermediate shaft 18 via the phase adjuster 17. Further, the rotation of the intermediate shaft 18 is transmitted to the output shaft 19 by the gear 18b and the gear 19a. The number of teeth of the gear 18b and the gear 19a are 22, 44, respectively, where the speed is reduced to 1/2. Therefore, when the rotation is transmitted from the input shaft 11 to the clutch shaft 16, the doubling of the rotation amount is canceled out here, and the ratio returns to a one-to-one ratio. It should be noted that the information may always be transmitted on a one-to-one basis due to space limitations.

A sprocket 19b is attached to the output shaft 19, and the sprockets 21a, 22a, 23a attached to the drum shafts 21, 22, 23 are rotated by a chain 19c. Therefore, the drive of the motor 1 is finally transmitted to the drum shafts 21, 22, 23 of the feeder unit 20. Here, the drums 21b, 22b, 23
To change the b phase, the phase adjustment shaft 1 of the phase adjuster 17
This is made possible by turning 7c with a motor 17d. That is, by operating the motor 17d with a push button,
Without heavy work while the saddle stitcher is stopped or running,
The phase can be easily adjusted, and the fall timing of the book can be adjusted.

The cycle of supplying the printing book is performed by switching the clutches 12 and 13 described above. That is, when one copy is supplied to one frame of the gathering chain 2 (between the pins 2a), the clutch 12 is connected and the clutch 13 is disconnected. Gathering chain 3-2
In order to supply a copy one by one (by skipping one frame) per frame, the clutch 13 is connected and the clutch 12 is disconnected.
When both the clutch 12 and the clutch 13 are disengaged, the drive is not transmitted to the drum shafts 21, 22, and 23, and no print book is supplied from the feeder unit 20.

In the feeder F having the above-described structure, when automatically adjusting the timing of dropping the printed book, the absolute encoder 31 is attached to the rotary shaft 4 for circulating the gathering chain 2 and the drums 21b, 22b, 23b.
Rotating portion of (e.g., a sprocket 22a) a sensor (proximity sensor) 32 for detecting the home position, the phase adjustment shaft 17
A sensor (proximity sensor for pulse transmission) 33 for measuring the rotation amount of the adjustment motor 17d is attached to c. When the drive motor 1 is stopped, either the clutch 12 or the clutch 13 is connected, and the adjusting motor 17d is rotated, thereby causing the drum 21 to rotate.
b, 22b, and 23b are rotated to move to the origin, then the angle of the rotating shaft 4 is read from the encoder 31, and the drums 21b, 22 are shifted by an appropriate phase angle with respect to the angle.
motor 17d by a personal computer or the like so that b and 23b rotate.
The amount of rotation of the motor 17d is calculated, and the driver that controls the motor 17d is controlled to rotate the motor 17d to adjust the phase.
The phase of the unit 17 is determined. This makes it possible to automatically adjust the timing for dropping the book.

The sensor 32 for detecting the origin position includes:
An absolute encoder may be used. In this case, since the angle can be read without rotating the drums 21b, 22b, and 23b to the origin, the movement amount can be directly calculated by a personal computer or the like, which is more practical.

[0026]

Since the present invention is configured as described above, the following effects can be obtained.

In the feeder of the saddle stitcher according to the first aspect, a phase adjuster capable of changing the phase of the input section and the output section is provided in the printing sheet drop timing adjusting mechanism section located between the feeder section and the drive motor. By operating with the adjusting motor, the timing for dropping the book onto the gathering chain can be easily and automatically adjusted regardless of whether the saddle stitcher is operating or stopped. it can.

In the feeder of the saddle stitcher according to the present invention, a clutch mechanism for switching between a case where the book is dropped to a predetermined position of the gathering chain every cycle, a case where it is dropped once every several times, and a case where it is not dropped is provided. Print book fall time
It is arranged between the input and output of the printing adjustment mechanism , so the switching ratio between the input shaft and output shaft in the print book fall timing adjustment mechanism can be smoothed by simply switching the clutch without switching gears as in the past. Can be changed to

According to a third aspect of the present invention, in the feeder of the saddle stitcher, a gather for detecting a rotational position of the gathering chain is provided.
Ring chain position detecting means, drum position detecting means for detecting the drum rotation position of the feeder section ,
By adding a means for calculating the required rotation amount of the adjustment motor from the detection amount by the detection means and performing phase adjustment,
Using a personal computer or the like, it is possible to automatically adjust the print book drop timing to the optimum one.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a feeder according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a printing-book drop timing adjusting mechanism in the feeder.

FIG. 3 is a schematic view showing a feeder of a conventional saddle stitcher.

[Explanation of symbols]

F feeder 1 drive motor 2 gathering chain 10 print book drop timing adjustment mechanism 12, 13 clutch 17 phase adjuster 17d adjustment motor 20 feeder

Continued on the front page (72) Inventor Akihiko Shibata 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Masaaki Takahashi 1-1-1, Ichigaga-cho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (72) Takashi Akimichi, Inventor 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Dai-Nippon Printing Co., Ltd. (72) Tadashi Yonezu 1-1, Ichigaga-cho, Ichigaya-cho, Shinjuku-ku, Tokyo No. 1 Dai Nippon Printing Co., Ltd. (56) References JP-A-1-306289 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B42C 1/00 B42C 19/00 B42C 19 / 08

Claims (3)

(57) [Claims] 1. A drive the feeder through the book blocks falling timing adjusting mechanism by a drive motor, Flip and among to drop to a predetermined position on the gathering chain portionwise book blocks that are set on the said feeder unit Machine feeder,
A feeder for a saddle stitcher, wherein a phase adjuster capable of changing a phase of an input unit and an output unit is provided in the print book drop timing adjusting mechanism unit. 2. A case of dropping the book blocks in a predetermined position of the gathering chain for each cycle, and when to drop once every several times, a clutch mechanism for switching on the case not to drop book blocks
2. A feeder for a saddle stitcher according to claim 1, wherein said feeder is disposed between an input and an output of said drop timing adjusting mechanism . 3. A gathering chain position detecting means for detecting the position of a feed blade of the gathering chain, a drum position detecting means for detecting a drum rotation position of the feeder unit, and an adjusting motor based on the amounts detected by these two detecting means . 3. A feeder for a saddle stitcher according to claim 1, further comprising means for calculating a required rotation amount and adjusting a phase.