JPH02164597A - Apparatus for detecting and discharging binding inferior saddle stitching book - Google Patents

Abstract

PURPOSE:To detect a binding inferior saddle stitching book to discharge the same by providing a binding inferiority detection circuit for detecting the binding inferior saddle stitching book on the basis of the signals from both of a saddle stitching book detection sensor and a metal detection sensor and operating a rejection device corresponding to the inferiority signal of said detection circuit. CONSTITUTION:A saddle stitching book 2B after bound by a binding wire passes the position of a saddle stitching book detection sensor 11 and that of a metal detection sensor 12. At this time, the saddle stitching book detection sensor 11 outputs a signal showing the presence of the saddle stitching book 2B continuously during passage while the metal detection sensor 12 outputs a wire detection signal at each time when the wire passes. Whereupon, the binding inferiority detection circuit built in an operating panel 9 counts the number of wire detection signals during the continuation of the signal showing the presence of the saddle binding book 2B from the saddle binding book detection sensor 11 to compare the count value with a set numerical value and, when both values are different, said detection circuit judges that the number of wires binding a predetermined position are inferior to output a binding inferiority signal. A control apparatus receives this signal to operate a rejection device 6 when the saddle stitching book 2B reaches said device 6 and discharges the same to the outside of a fed route.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is directed to a saddle stitching machine that detects binding defects of saddle stitched books (for example,
The present invention relates to a detecting and discharging device for defective saddle-stitched books, which makes it possible to prevent contamination with non-defective products by detecting and rejecting defective saddle-stitched books (two-piece binding without wire, defective stitching position, etc.).

[Conventional technology]

Conventionally, a plurality of signatures are collated in a collating section to make a collated book, the combined book is sent to a saddle stitching section, the collated book is bound with a binding wire in the middle stitching section to make a saddle stitched book, and then , a saddle stitching machine configured to discharge to a subsequent process is known. This saddle stitcher is usually provided with a collated book thickness detection device between the first collated section and the saddle stitched section to detect abnormalities in the thickness of the combined book.

In addition, a reject device is installed downstream of the saddle stitching section to eject defective saddle-stitched books, and when a book is detected as defective by the book thickness detection device, the book is sent to the reject device. When this point is reached, a reject device is activated to eject the collected books from the regular path, preventing them from being mixed in with non-defective items.

[Problem to be solved by the invention]

However, with such a saddle stitching machine, it is possible to detect and eject saddle stitched books with poor thickness such as extra pages or missing pages.
It is not possible to detect whether or not a saddle-stitched book is bound with a predetermined number of binding wires and at a predetermined position. There has been a problem in that saddle-stitched books with defective binding such as bound books or saddle-stitched books that are side-stitched are mixed in.

The present invention has been made in view of such problems, and is capable of detecting and discharging defective saddle-stitched books that have not been tightened at predetermined positions with a predetermined number of line wires. The purpose is to provide a discharge device.

[Means to solve the problem]

The present invention, which has been made to achieve the above object, includes a conveyance device that conveys saddle-stitched books along a predetermined route, and a conveyance device that is provided in the middle of the conveyance path by the conveyance device to eject the saddle-stitched books out of the conveyance path. and a predetermined position upstream of the reject device within the conveyance path.

a saddle-stitched book detection sensor that detects the presence or absence of a saddle-stitched book; a metal detection sensor that is arranged near the saddle-stitched book detection sensor and detects passage of a wire binding the saddle-stitched book; and the saddle-stitched book detection sensor. a binding defect detection circuit that detects a saddle stitched book with a defective binding from a signal from a binding defect detection circuit and a metal detection sensor; and a control device that operates the reject device in response to a defect signal from the binding defect detection circuit. The main subject is a detection and ejection device for bound books.

[Effect]

In the device configured as described above, the saddle stitched book after being sucked by the wire wire passes through the positions of the saddle stitched book detection sensor and the metal detection sensor, but at this time, the saddle stitched book detection sensor is continuously operated during the passage. It outputs a signal indicating that a saddle-stitched book is present, and on the other hand, the metal detection sensor outputs a wire detection signal every time a wire passes. The binding defect detection circuit inputs these signals, counts the number of wire detection signals while the signal from the saddle stitch book detection sensor continues, and sets the count value to a preset number. (li! (number of sip wires used for one saddle-stitched book)), and if they are different, it is determined that the number of wires used to bind a predetermined position is defective, and a defective binding signal is output. The control device receives this defective binding signal, and when the binding defective signal reaches the corresponding saddle stitching ejection device, it activates the reject device to eject the defective binding out of the 1 momme feed path.In this way, the defective binding is detected, and the defective binding is detected. can be separated from

〔Example〕

The present invention will be described in detail below with reference to one drawing.

FIG. 1 is a side view schematically showing a saddle stitching machine equipped with a detecting and discharging device for saddle stitched books with defective wires according to an embodiment of the present invention;
2A is a gathering chain for collating signatures, 2B is a saddle-stitched book made by tightening the gathered book with a slurry wire, and 3 is a gathering chain that is conveyed by the gathering chain 1. A guide plate that constitutes a conveyance path for downstream conveyance, 4
Reference numeral denotes a stitcher head for driving the line wire into the collected book, 5 the line wire driven into the collected book, and 6 a jetting device provided in the middle of the conveyance path. As shown in FIG. 2, the reject device 6 can be rotated to the two-dot chain line position, and includes a reject claw 6A and its drive mechanism 6B (see FIG. 1).
By sending the saddle-stitched book 2B with the reject claw 6A moved to the two-dot chain line position, the saddle-stitched book 2B can be discharged out of the conveyance path. Note that although illustration is omitted, two collated books or two saddle-stitched books on the guide plate 3
A transport 'A'll is provided which transports B intermittently one pinch at a time in the direction indicated by the arrow. Since these configurations are conventionally known, detailed explanation will be omitted.

On the conveyance path of the gathered wood 2A by the gathering chain 1, there is provided a gathered book thickness detection device 8 for detecting an abnormality in the thickness of the 3-packed wood 2A and detects addition or missing of the assembled wood 2A. A conventionally known device can also be used for this thickness detection device 8. A signal from the collated book thickness detection device 8 is sent to a control device 9, and is used to control the stitcher head 4 and reject device 6, as will be described later.

Upstream of the reject device 6 and downstream of the stitcher head 4, there is a saddle-stitched book detection sensor 11 that detects the presence or absence of the saddle-stitched book 2B, and a saddle-stitched book detection sensor 11 is arranged near the saddle-stitched book detection sensor 11. A metal detection sensor 12 that detects the passage of the wire 5 bound at a predetermined position, and a presser roller 13 placed before and after the metal detection sensor 12 are provided. Figure 3 shows saddle stitch book detection sensor 1
1 and metal detection sensor 12, etc., and a slide member 15 is held by a frame 14 provided parallel to the guide plate 3 so as to be horizontally movable. A bracket 16 is fixed to the slide member 15, and a saddle-stitched book detection sensor 11 is held at the lower end of the bracket 16. A holder 17 whose vertical position is adjustable is also attached to the slide member 15.
is attached, and the metal detection sensor 1 is mounted in the holder 17.
2 is retained.

Here, as the saddle-stitched book detection sensor 11, a transmissive or reflective optical sensor, a limit switch, etc. can be used, but it is preferable to use an optical sensor that can detect the saddle-stitched book in a non-contact manner. . In addition, when using an optical sensor, not only the sensor body that performs photoelectric conversion is attached to the bracket 16, but also only the detection end is attached, and light is transmitted from the detection end to the sensor body installed at another position using an optical fiber. The metal detection sensor 12 may be
For example, a metal-sensitive proximity switch can be used.

In FIG.
9 has a built-in binding defect detection circuit that detects a saddle stitched book with defective binding from the signals from the saddle stitched book detection sensor and the metal detection sensor. This binding defect detection circuit counts the number of wire detection signals sent from the metal detection sensor 12 while the signal indicating the presence of a saddle stitched book is being sent from the saddle stitched book detection sensor 11, and calculates the number of wire detection signals in advance. It is configured to compare the set value (the number of stitching wires used for one saddle-stitched book) and if it differs, it is determined that the stitching is defective and outputs a binding defect signal. .

In this way, the binding defect detection circuit counts the number of wires used in the correct position (position of the spine of the tree) of one saddle-stitched book 2B while it passes through, and detects a predetermined number of bindings. It can be determined whether or not the wire is being used correctly. The operation panel 19 includes input keys 19 for inputting setting values.
A display 19B for displaying input values thereof, count values of wire detection signals, etc. is also provided.

The control device 9 receives signals from the book thickness detection device 8 and the binding defect detection circuit in the operation panel 19, and controls the stitcher head 4 and the reject device 6. It is equipped with a button rod wheel 21 shown in FIGS. This button rod wheel 21 holds a plurality of button rods 22 (10 in the embodiment) so as to be movable up and down in a primary pinch.

Moreover, it is configured to rotate in the direction of the arrow in response to the movement of the collated books 2A and saddle-stitched books 2B shown in FIG. For convenience of explanation, the center of the two-button Rondo wheel 21 is used as a reference.
Positions obtained by dividing the circumference into 10 equal parts are indicated by P1 to P10. Around this button rod wheel 21.

At position P1, the first solenoid 23 that pushes down the button loft 22 in response to a defective thickness detection signal from the collated book thickness detection device 8 is at position 5 111P3, and the upper and lower limit switches 24A and 24B for controlling the stitcher head 4 are at position 1. Position P
4, there is a proximity switch 25 for timing adjustment.

At position P5, a second solenoid 26 that presses down the button rod 22 in response to a binding defect detection signal from a binding defect detection circuit in the operation panel 19 is placed at position P6, and a reject device W6 is placed at position P6.
A cam (not shown) for returning the button rod 21 to the raised position is disposed at an appropriate position between the two positions 27 and PIO of the upper and lower mift grips 27A and 27B for control. Here, upper limit switch 24A, proximity switch 25.
The upper limit switch 27A is arranged at a position where it can detect the upper end of the button rod 22 in the raised position.
On the other hand, the lower limit switch 24B.

27B is arranged at a position where it can detect the lower end of the button rod 22 (see FIG. 6) in the lowered position.

The output signal of each switch is used to perform the following operations.

Next, the operation of the apparatus having the above configuration will be explained.

In FIG. 1, while the gathering chain l is running, signatures are successively fed onto it and collated.

The collated book 2A is sent from the gathering chain 1 onto the guide plate 3, and is intermittently fed on the guide plate 3, and the stitching wire 5 is driven in by the stitcher head 4 to create a stitch. The saddle-stitched book 2B is sent to the next process.

During the above-mentioned collation and saddle stitching operations, while the three-column stack 2A passes the position of the collated book thickness detector 8, the collated book thickness detector 8 detects an abnormality in the thickness of the collated book 2 (for example, an additional .

Detect missing pages, etc.). Now, when a collected book with an abnormal thickness passes through the collected book thickness position detection device 8, this detection device 8 detects the thickness abnormality and sends a thickness abnormality detection signal to the control device 9.

In the control device 9, a button loft wheel 21 shown in FIG. 4 rotates in accordance with the moving speed of collated books and saddle stitched books.
All the button lofts 22, which are returned to the raised position by a cam (not shown) provided between the buttons and come to the second position 11P1, are in the raised position. The thickness abnormality detection signal from the detection device 8 actuates the first solenoid 23 located at the first IPI to push down the button rod 22 to the lowered position. When the collated book 2A with abnormal thickness moves to the position of the stitcher head 4, the button rod 22 pushed down by the first solenoid 23 has reached position P3 due to the rotation of the button rod wheel 21 and remains at that position. Lower limit switch 24B is activated with button rod 22 in the lowered position. When the lower limit switch 24B is activated, its output signal stops the operation of the stitcher head 4. As a result, the stitcher head 4 does not operate for the two people who are collating books with abnormalities in the positive direction, and the stitching wire is not driven in. In addition.

When a collected book with a normal thickness passes through the collected book thickness detection device 8, the first solenoid 23 does not operate, so the button rod 22 remains in the raised position, and the button rod 22 moves to position P3. When it reaches the upper limit switch 24A
is operated, and in this case, the stitcher head 4 is operated to drive the binding wire into the collected books.

Thereafter, the collected books with abnormal thickness, on which the stitching wire was not driven by the stitcher head 4, are sent downstream on the guide plate 3 and reach the reject device 6. At this time, the button rod 22, which had been pushed down by the first solenoid 23, is now down!
Reach ffi P 6 and press lower rim switch 27B
The signal from the lower limit switch 27B operates the drive mechanism 6B of the reject device 6 to rotate the reject claw 6A to the position shown in two-dot chain line in FIG.

As a result, the defective lower bound books are discharged. In addition, when a normal collated book (saddle-stitched book) passes, the button rod 22
is in the raised position, and the upper rimming switch 27A is activated to return the reject claw 6A to the position shown by the solid line in FIG.
The saddle-stitched book will then be sent to the subsequent process.

Next, the saddle-stitched book 2B, which has no abnormality in thickness and has the binding wire 5 inserted therein by the stitcher head 4, then passes through the positions of the saddle-stitched book detection sensor 11 and the metal detection sensor 12. While the saddle-stitched book 2B passes the positions of these sensors 1112, the saddle-stitched book detection sensor 11 continues to output a signal indicating the presence of a saddle-stitched book, while the metal detection sensor 12
It outputs a detection signal every time it passes. The binding defect detection circuit built into the operation panel 19 is as follows.

Counting the number of wire detection signals sent from the wire detection sensor 12 while the signal indicating the presence of a saddle stitched book is being sent from the saddle stitched book detection sensor 11 (therefore, while one saddle stitched book is passing), Comparing the count value with a preset value (the number of binding wires used for one saddle-stitched book), if a predetermined number of binding wires 5 are not used (for example.

In case of 2-piece binding without weaving, incorrect position of the slit, etc.), the binding defect detection circuit outputs a binding defect signal, and the position iP in Fig. 4 is output.
5, the second solenoid 26 is activated, and the button loft 22 is activated.
Press down. The proximity switch 25 provided in the first position 1IEP4 is provided to detect the button rod 22 in the raised position and adjust the timing of the operation of the second solenoid 26. If the button loft 22 has already been pushed down due to the poor thickness of the collated book as described above, the second solenoid 26 will not operate because the proximity switch 25 will not output a button rod detection signal.

Even when the button rod 22 is pushed down by the operation of the second solenoid 26, the button rod 22 is in the position I.
When P6 is reached, the lower limit switch 27B is activated, the reject claw 6A of the reject device 6 is moved to the ejection position, and the corresponding saddle-stitched book 2A is ejected out of the conveyance path. In this way, not only the thickness defect but also the defective number of wires etc.
The reject device 6 also discharges the second defective saddle-stitched book to the outside of the conveyance path, and only the non-defective books are sent to the subsequent process.

〔Effect of the invention〕

As explained above, according to the second aspect of the present invention, the detecting and discharging device for defective saddle stitched books can detect whether or not a predetermined number of binding wires are present at a predetermined position of a saddle stitched book after binding. In addition, in the case of defective weaving, the saddle-stitched book can be discharged from the system, which has the effect of preventing defective saddle-stitched books from being mixed in with non-defective products. are doing.

[Brief explanation of the drawing]

FIG. 1 is a side view schematically showing a saddle stitching machine equipped with a detecting and discharging device for defective saddle stitched books according to an embodiment of the present invention, and FIG. 2 is a reject device 6 provided in the device shown in FIG. 1. 3 is a schematic plan view of the saddle-stitched book detection sensor 1 provided in the above device.
FIG. 4 is a schematic perspective view showing the mounting portion of the metal detection sensor 12 and the metal detection sensor 12, etc.; FIG. Figure 6 is V-V and V of Figure 4, respectively.
It is a sectional view taken along the line T-Vl. 1-Gathering chain, 2A--Collected book, 2B-
Saddle stitch book, 3...-guide plate, 4...-stitcher head, 5--binding wire, 6-reject device, 6A-
Reject claw, 6B-drive mechanism, 8-collated book thickness detection device, 9-control device, 11--saddle stitch book detection sensor, 1
2-metal detection sensor, 13--press roller, 19-operation panel. Agent Patent Attorney Kyozo Nori Matsu

Claims (1)

[Claims] a conveyance device that conveys saddle-stitched books along a predetermined route; a reject device that is provided in the middle of the conveyance path by the conveyance device and discharges the saddle-stitched books out of the conveyance path; A saddle-stitched book detection sensor is provided at a predetermined position on the upstream side of the device and detects the presence or absence of a saddle-stitched book; and a saddle-stitched book detection sensor is placed near the saddle-stitched book detection sensor to detect the passage of a wire binding the saddle-stitched book. a metal detection sensor; a binding defect detection circuit that detects a defective saddle stitched book from signals from the saddle stitch book detection sensor and the metal detection sensor; A detecting and discharging device for defective saddle-stitched books, the device having a control device for activating the book.