JP3133747B2 - Bookbinding device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bookbinding apparatus for binding a bundle of paper.

[Prior Art] A conventional bookbinding apparatus has a configuration in which a guide plate moves and a bookbinding operation is performed at a position where the guide plate stops.

[Problems to be Solved by the Invention] However, in the above-described conventional example, even when a foreign matter is mixed in the moving portion of the moving guide plate and the guide plate is stopped, the bookbinding operation is performed, resulting in a bookbinding error. There was a disadvantage.

Therefore, an object of the present invention is to provide a function of detecting whether the stop of the guide plate is normal or abnormal,
An object of the present invention is to provide a bookbinding apparatus that eliminates bookbinding errors.

Means for Solving the Problems To achieve the above object, a bookbinding apparatus according to the present invention is a bookbinding apparatus for binding a book to be set between guide plates, the bookbinding apparatus comprising: Driving means for moving the guide plate in the pressing direction and the opening direction, position detecting means for detecting the position of the guide plate, and contact detecting means for detecting that the guide plate and the book to be book have come into contact with each other; If the output from the contact detection means indicates non-contact, despite the fact that the position information output from the position detection means does not change, abnormal stop detection for detecting abnormal stop of the guide plate. Means. Here, when the abnormal stop is detected by the abnormal stop detecting means, the power supply to the load is stopped, and a display indicating that the abnormal stop has occurred can be performed.

[Operation] According to the present invention, the contact detecting means for detecting that the guide plate has come into contact with the book to be bound, despite the fact that there is no change in the position information output from the position detecting means for detecting the position of the guide plate. If the output from the device indicates non-contact, it can be determined that the guide plate has abnormally stopped.

[Example] Hereinafter, an example of the present invention will be described based on an example.

1 to 10 show an embodiment of the present invention.

In FIG. 1, reference numeral 14 denotes a bookbinding machine serving as a main body, 11 denotes a bundle of originals to be bound, and 10 denotes a cover having a glue 12 inside a spine for binding.

When the bookbinding operation is to be performed, the aligned document bundle 11 is put in the cover 10 and the heat guide 6 is moved along the guide 7 previously positioned at the home position (steps 604, 605 and 606 in FIG. 6 will be described in detail later). Insert until it comes into contact with.
The pair of guides 7 are arranged on both sides of the original bundle 11 inserted at a predetermined bookbinding position so as to sandwich the cover 10 containing the original bundle 11, and can be moved in a direction to approach and separate from the original bundle 11. .

This guide 7 is a width detecting volume consisting of a variable resistor.
The resistance value output from the width detecting volume 13 changes according to the position of the guide 7.

The guides 7 move in a direction approaching each other from the most distant home position and stop when they come in contact with the display 10 containing the bundle of originals 11. The position of the stopped guides 7 is determined by the output resistance value of the width detection volume 13. The detected resistance value is compared with a reference resistance value _R0 described later, so that the cover 10 is obtained.
Can be detected.

When the bundle of originals 11 is inserted between the guides 7, the flags 9a, 9
When the sheet b contacts the bundle of originals and the positions of the flags 9a and 9b are detected by the photodetector for paper detection, it is detected that the bundle of originals has been inserted at a predetermined bookbinding position between the guides 7. Alternatively, when the transmission type sensors 8a and 8b provided on both sides of the guide are interrupted by the original bundle, it is detected that the original bundle 11 is inserted into the bookbinding position of the bookbinding machine 14. This signal causes the guide width shifting motor 1 to rotate forward, and one or both sides of the guide 7 operate due to the notch of the gear cut by the motor shaft. The guide 7 continues to move until the width of the guide 7 is restricted by the thickness of the document bundle.

At the same time, the bookbinding contact detection sensor 30 (see the guide plate bookbinding contact detection circuit 31 shown in FIG. 3) is turned on. This restriction is detected by a change in the resistance value of the size width detection volume 13, and when the change amount becomes zero, it indicates that the constrained guide 7 is stopped, so the guide width shifting motor 1 is turned off. Further, the position of the guide 7 is determined based on the resistance value at this time, and the thickness of the document bundle is calculated.

When the guide 7 is constrained by the bundle of originals, the plurality of heaters 4 are energized to heat the heat conductor 6 and melt the glue 12 previously attached to the cover.

Here, the energizing time t of the heater 4 or the calorific value of the heater 4 is determined and energized according to the paper thickness obtained by the above-described resistance value. During this time, the temperature of the heater 4 is adjusted by the detecting means 5 for detecting the temperature of the heat conductor 6 in accordance with the determined amount of heat of the heater 4.

Further, the heater is oscillated by the heater oscillating motor 2 and the cam 3 to improve heat transfer from the heat conductor 6 to the cover.

When the glue 12 of the cover 10 is melted by the heating for the time t and the glue 12 of the cover 11 is made to permeate, the energization of the heater 4 is terminated. Thereafter, the paste is cooled by natural cooling or forced cooling by a cooling means such as a fan (not shown).
To complete the bookbinding.

FIG. 2 is a cross-sectional configuration diagram showing a display unit in one embodiment of the present invention. In this figure, 16 is an LED (light emitting diode) that indicates that the power is on or preheating
Reference numeral 17 denotes a warning transmitting unit (abnormality warning buzzer) as a means for transmitting a warning, bookbinding completion, or the like. Also, 15
Is a timer display section for changing the lighting LED according to the energization time t to the heater and communicating the progress.

FIG. 3 is a block diagram of a control circuit according to one embodiment of the present invention. In the figure, reference numeral 18 denotes a CPU (Central Processing Unit), which has a ROM 20 in which a control procedure program is stored, a RAM 21 used for storing input data and a working storage area, and an interface for various control signals. I
/ O22 and a timer circuit 19.

Reference numeral 23 denotes a size width detection circuit, which A / D converts the output resistance value VR1 corresponding to the position of the guide 7 using the above-described width detection volume 13 and inputs it to the CPU 18.

Reference numerals 24 and 25 denote paper detection circuits, respectively, which binarize output voltages from the photo interrupter or the transmission type sensors 8a and 8b and input the binarized signals to the I / O.

Reference numeral 26 denotes a power ON display circuit, and LED 0 in FIG.
Drive 16 ON / OFF.

 Reference numeral 27 denotes a warning transmission circuit which turns on / off the buzzer 17.

Reference numeral 28 denotes a timer display circuit for turning on / off the LEDs 1 to 515 according to the output of the internal timer 19 of the CPU 18.

Reference numeral 5 denotes a circuit for detecting the temperature of the heater 4, for example, A / D converting a voltage detected by a thermistor and inputting the converted voltage to an I / O.

Reference numeral 29 denotes a motor control circuit which controls ON / OFF of the guide width shifting motor 1 and the heater swing motor 2, forward / reverse rotation and speed control, detection of a current flowing through the motor, and the like.

4 to 10 are flowcharts showing the operation of the present embodiment. Here, FIG. 4 is a general flowchart, and FIGS. 5 to 10 are flowcharts of each subroutine.

In FIG. 4, when the CPU 18 starts operating, initial setting of each flag is performed in an initial setting subroutine 401.

Next, in an input control subroutine 402, each flag is set based on information from each input sensor. Next, in a bind control subroutine 403, a process according to a bind state is performed based on a bind sequence number (hereinafter abbreviated as BSQ).

Next, in a heater temperature control subroutine 404, a heater control process corresponding to each mode is performed.

Next, in the motor / heater output control subroutine 405, the output circuit of the motor / heater is operated based on the flags related to each motor and heater.

Next, in a display output control subroutine 406, an output circuit of the display unit is operated based on a flag relating to each display.

When the display output control subroutine 406 ends, the process returns to the input control subroutine 402, and repeats the following processing.

FIG. 5 is a flowchart of a subroutine for initial setting.

In FIG. 5, in step 501, BSQ is set to 4, and a state in which the guide returns to the home position is set. The BSQ will be described in detail in the description of the bind control subroutine.

In steps 502 to 511, each flag is set. Here, the heater full power flag is a flag for determining whether to continue energizing the heater, the oscillating motor flag is a flag for determining whether to turn on the oscillating motor, and the width adjustment motor positive rotation flag is for the width adjustment motor. Forward rotation (the direction in which the guide closes)
The flag to determine whether or not to rotate the motor, the reverse rotation flag for the width adjustment motor is the flag for determining whether to rotate the width adjustment motor in the reverse direction (the direction in which the guide opens), and the power LED flag is the power LED.
A flag for determining whether or not to turn ON, an abnormal flag is a flag for determining whether or not to sound the abnormal warning buzzer 17, and a 60 ° C temperature control flag is for controlling whether or not to perform temperature control at 60 ° C (whether or not to perform preheating temperature control).
The T ° C temperature control flag is a flag that determines whether to control the temperature at a high temperature that melts the glue, and the paper flag is a paper that enters the guide based on information from the paper detection circuits 24 and 25. The VR home flag is a flag indicating whether or not the guide is at the home position based on information from the size width detection circuit 23.

In the initialization subroutine, only the power LED flag is turned on in step 506, and the remaining flags are turned off.

FIG. 6 is a flowchart of an input control subroutine.

First, in step 601, when there is paper based on the input from the paper detection circuits 24 and 25, the paper presence flag is turned on in step 602.
If not, the paper presence flag is turned off in step 603.

Next, in step 604, the output resistance value VR1 of the width detection regulator 13 obtained from the size width detection circuit 23 is compared with the reference resistance value _R0 . As described above, the reference resistance value R ₀ is a threshold for determining whether or not the guide is at the home position at the start of the bookbinding operation.

That is, the guide 7 stops in the open state so that the cover 10 and the bundle of originals 11 can be inserted when performing the bookbinding operation.
When the opening width of the guide 7 has a predetermined value, the guide 7 is referred to as being at the home position, and the output resistance value of the width detection volume 13 which is a threshold value for determining whether or not the guide 7 is at the home position is referred to. Called resistance value _R0 . When the output resistance value VR1 of the width detection volume 13 indicates a value equal to or less than the reference resistance value _R0 , it is determined that the guide 7 is located at the home position.

More specifically, the output resistance value VR1 of the width detection volume 13 in FIG.
When the knob 3 (indicated by a dashed square in this figure) is moved (that is, when the opening width between the guides is wide), the resistance becomes low, while the width detection volume moves to the left. When the knob 13 is brought close (that is, when the opening width between the guides is narrow), it is installed so as to have high resistance, so that the output resistance value VR1 is equal to or less than the reference resistance value _R0. It is determined that the above knob is shifted to the right, and the VR home flag is turned on in step 606.

On the other hand, when the output resistance value VR1 of the width detection volume 13 is larger than the reference resistance value _R0 , it indicates that the vehicle is not at the home position.

When not in home position, BSQ is 2 in step 607
Check whether or not. If BSQ is not 2 as described later, the data of the thickness calculated from VR1 is not necessary, and the input control subroutine is terminated.

BSQ is when the 2 compares the steps respectively 608,611,614,617,620 VR1 and _{R 1, R 2, R 3} , R 4, R 5, R 0 <R 1 <R 2 <R
_{Since 3} <R ₄ <R ₅ , MODE changes from 1 to 5 depending on the value of VR1.
To the data of the thickness of the book.

In addition, each M is determined by the value of the output resistance value VR1 of the width detection volume 13.
Before distributing ODE, each step 623,625,62
At 7,629,631, it is checked whether or not the bookbinding contact detection sensor 30 is ON, and if it is ON, MODE1 to MODE5 are allocated respectively. On the other hand, the bookbinding contact detection sensor 30 is turned off.
(That is, even though the change amount of the output resistance value VR1 of the width detection volume 13 is 0, the contact sensor 30
OFF), step 624 or 626 or 628 or
At 630 or 632, the guide abnormality flag is turned ON.

FIG. 7 is a flowchart of a bind control subroutine in this embodiment. In this subroutine, BS
At Q0, a process to detect that a bundle of paper has been inserted and to rotate the width adjustment motor in the forward direction, at BSQ1, to confirm that the change of VR1 has stopped, and to stop the width adjustment motor,
In Q2, the thickness data (MOD
E1 to MODE5) Processing to set temperature control or timer, B
At SQ3, confirm that the timer has expired and turn off the heater.At BSQ4, reverse the width adjustment motor.At BSQ5, confirm that the VR home flag has returned to the guide home position. Turn off the width adjustment motor and confirm that the paper bundle has been removed from between the guides at BSQ6, and preheat it to 60 ° C.
A process for starting temperature control is performed. After performing processing according to each BSQ, the BSQ is updated and the bind control subroutine ends.

FIG. 8 is a flowchart of a heater temperature control subroutine. First, check for guide abnormalities in step 823 (steps 624, 626, 628, 6
If YES, the process proceeds to step 802. On the other hand, in the case of NO, the process proceeds to step 801. In step 801, an abnormality in the temperature of the heater is checked. If an abnormality is found (step 801: YES), the heater, the swing motor,
Turn off all the width adjustment motors and power supply LED, and turn on the abnormality flag to sound the abnormality warning buzzer 17 (see Fig. 2).
To

Further, the BSQ is switched to 4 (step 807), and the width shifting motor is rotated in the reverse direction so that if the sheet bundle is sandwiched, it can be removed.

If there is no temperature abnormality, it is checked in step 808 whether the energization of the heater is controlled by time. If the energization of the heater is controlled by time (= heater full power flag ON), the heater is turned ON (step 80).
In step 810, it is checked whether the energization time has expired. If it is determined in step 810 that the time is up, the heater full power flag is turned off (step 811) and the heater pre-heating flag is set.
The 60 ° C. temperature control flag is turned on (step 812), and the T ° C. temperature control flag is turned off (step 813).

When it is determined in step 808 that the current control is not the energization time control (= heater full power flag OFF), it is checked in step 814 whether the temperature is to be controlled at a high temperature (that is, T ° C.).
If it is not the high-temperature temperature control, it is checked in step 815 whether the temperature is the low-temperature temperature control (ie, 60 ° C. temperature control = preheating temperature control). When the temperature is not low-temperature control (step 815: NO), the heater is not turned on, and the heater temperature control control routine is terminated.

If it is determined in step 814 that the temperature is to be controlled at a high temperature, the swing motor is turned on in step 820 to improve the thermal efficiency from the heater.

Next, in step 821, the temperature is compared with T ° C. If the temperature is lower, the heater is turned on, and if the temperature is higher, the heater is turned off to maintain the temperature close to T ° C.

If it is found in step 815 that the temperature is to be adjusted to a low temperature, the drive of the rocking motor is terminated, and
Compare with ℃, turn off if higher, turn on if lower, and keep the temperature close to 60 ℃.

FIG. 9 is a flowchart of a motor / heater output control subroutine. Illustrated steps 901,904,907,91
At 0, each flag is checked, and if it is ON, a signal is given to the output circuit to drive the motor and the heater.

FIG. 10 is a flowchart of a display output control subroutine. At steps 101, 104 and 107 shown in the figure, the flag is checked, and if it is ON, the LED and the buzzer are turned ON.

[Effects of the Invention] As described above, according to the present invention, it is assumed that the guide plate and the book to be made contact with each other despite the fact that the position information output from the position detecting means for detecting the position of the guide plate does not change. When the output from the contact detection means to detect indicates non-contact, since the guide plate is configured to detect that the guide plate has stopped above, for example, when a foreign matter is mixed in the moving guide plate, the guide is caused by the foreign matter. Whether the board has stopped,
Or it can be determined whether it stopped in a normal state,
You will be able to bind without errors.

In addition, power supply to the load can be stopped in the event of an abnormality, so that safety can be further improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a bookbinding apparatus to which the present invention is applied, FIG. 2 is a block diagram of a display unit in this embodiment, FIG. 3 is a block diagram of a control circuit in this embodiment, FIG. Fig. 5 is a general flowchart in this embodiment. Fig. 5 is a flowchart of an initialization subroutine in this embodiment. Fig. 6 is a flowchart of an input control subroutine in this embodiment. Fig. 7 is a flowchart of a bind control subroutine in this embodiment. FIG. 8 is a flowchart of a heater temperature control subroutine in this embodiment, FIG. 9 is a flowchart of a motor / heater output control subroutine in this embodiment, and FIG. 10 is a flowchart of a display output control subroutine. DESCRIPTION OF SYMBOLS 1 ... Guide width adjustment motor, 2 ... Heater swing motor, 3 ... Cam, 4 ... Heater, 5 ... Temperature detection means, 6 ... Heat conductor, 7 ... Guide, 8 ... Transmission type sensor 9: Flag, 10: Cover, 11: Bundle, 12: Glue, 13: Width detection volume 14: Binder, 15: Timer display, 16: Power-on display LED, 17 ... ... Abnormal alarm buzzer, 18 ... CPU, 19 ... Timer circuit, 20 ... ROM, 21 ... RAM, 22 ... I / O, 23 ... Size width detection circuit, 24 ... Paper detection circuit 1, 25 …… Paper detection circuit 2, 26 …… Power ON display circuit, 27 …… Warning transmission circuit, 28 …… Timer display circuit, 29 …… Motor control circuit, 30 …… Binding contact detection sensor, 31 …… Guide plate binding Contact detection circuit.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomofumi Nakayama 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Satoshi Kuroyanagi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (72) Inventor Osamu Iwamoto 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References JP-A-60-166491 (JP, A) JP-A-52-34818 (JP) , A) Japanese Utility Model Showa 61-128072 (JP, U) Japanese Utility Model Showa 61-50468 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B42C 11/06

Claims (2)

(57) [Claims] 1. A bookbinding apparatus for binding a book to be set which is set between guide plates, a driving means for moving the guide plate in a direction in which the set book to be pressed is pressed and in a direction in which the book is opened, and the guide plate. Position detecting means for detecting the position of the book, contact detecting means for detecting that the guide plate and the book to be contacted, and despite the fact that the position information output from the position detecting means does not change, the An abnormal stop detecting means for detecting an abnormal stop of the guide plate when an output from the contact detecting means indicates non-contact. 2. The method according to claim 1, wherein when the abnormal stop is detected by the abnormal stop detecting means, the power supply to the load is stopped and a display indicating that the abnormal stop has occurred is performed. Bookbinding equipment.