JP2000272267A - Saddle stitch bookmaking machine, and imperfect collating sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a wrong motion hard to occur in an imperfect collating sensing, and at the same time, facilitate the maintenance of a sensing section by supporting the sensing section of an imperfect collating sensor by a register stopper constituent section of a feeder unit of a saddle stitch bookmaking machine equipped with the imperfect collating sensor, through a supporting member. SOLUTION: By this saddle stitch bookmaking machine, a work to adjust the location of a register stopper 32 supported by a supporting shaft 31, depending on the vertical size of a section, can be performed, and the supporting shaft 31 is provided in such a manner that the location can be adjusted on an arc for which the rotating shaft of a feeder drum 14 is made the center. The sensing section 102a of an imperfect collating sensor is supported by the supporting shaft 31 through a supporting member 101a, and on the supporting member 101a, the sensing section 102a is provided in a manner to be displaceable between an acting location and a retreat location, and an imperfect collating sensing is performed by the sensing section 102a at the acting location, and at the same time, at the retreat location, a work by workers in the vicinities of the feeder drum 14 and a register stopper mechanism section is made easier to perform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of bookbinding apparatuses. In particular, the present invention relates to a saddle stitching machine having a misalignment detector and a misalignment detector.

[0002]

2. Description of the Related Art A saddle stitching machine has a construction in which a collating machine, a wire stitching machine (stitcher) and a three-way cutting machine are connected. The collating machine performs an operation of arranging signatures in the order of each fold and collecting one signature at a time. The configuration is composed of a plurality of boxes (stacking section) in which signatures are inserted in the order of arrangement for each fold, a soccer that sucks one fold one by one from the bottom or side of each box, and a grip that draws out the signatures that have been sucked. It is composed of a nail, a gathering chain for transporting the extracted signature, and the like. The wire binding machine uses a wire to fix signatures assembled one by one in a gathering chain on a center page. The three-way cutting machine cuts off the three sides except for the side fixed with the wire at a predetermined position.

Conventionally, the detecting portion of the misalignment detector is provided outside the bottom plate or the side plate of each box of this collating machine.
A window is provided on the bottom plate or the side plate (face plate), and the detection unit optically detects the signature in the box as if looking through the window. The signature detected by the detection unit is the signature that is drawn next by soccer. According to the arrangement order of the signatures, the corresponding signatures are to be inserted into a specific box. However, if the signature is incorrectly put into the box, a mis-book will be produced. The incorrect page detector detects the presence of an incorrect signature in each box, so that the saddle stitching machine does not produce a wrong page.

[0004] In this conventional misalignment detector, the detection section has a light emitting element and, for example, about ten light receiving elements arranged in a plane, and each light receiving element is arranged based on the pattern of the signature in each arrangement. The amount of reflected light is detected. By arranging a plurality of light receiving elements in a plane, two-dimensional matrix data of the amount of reflected light can be obtained. Even if the signature is displaced and each light-receiving element detects the reflected light amount at a different part, the appropriateness of the signature can be correctly determined by calculating the matrix data. is there. This calculation includes calculation of the degree of coincidence that allows positional deviation, calculation of determining the determination level by learning,
Etc. are included.

[0005]

However, in the conventional misaligned detector, the determination is made based only on the data of about ten light receiving elements, and therefore, there are the following problems. Until a certain number of matrix data is stored, erroneous operations occur frequently. As the operation time becomes longer, the judgment becomes weaker, and there is a malfunction in which an incorrect signature is missed. Also, since the detector is installed at a location where maintenance and inspection is difficult,
Malfunctions also occur frequently due to contamination of the detection unit by paper dust or the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and a saddle stitching machine which is less likely to malfunction in detecting a misplacement, has high reliability, and facilitates maintenance and inspection of a detecting portion.
It is an object of the present invention to provide an incorrect page detector applied thereto.

[0007]

The above-mentioned problems are solved by the present invention described below. That is, the saddle stitching apparatus according to claim 1 of the present invention is a saddle stitching apparatus including a misalignment detector, wherein a register stopper constituting part of a feeder unit of the saddle stitching apparatus includes a support member through a support member. It is designed to support the detection unit of the incorrect page detector. According to the present invention, the detection unit of the incorrect page detector is supported by the register stopper component of the feeder unit of the saddle stitching machine via the support member. In a saddle stitching machine, a register stopper is provided for determining a stop position of a signature. In other words, if the detection unit is supported here, the deviation of the detection position of the signature is small, and a malfunction does not easily occur, and the reliability is high. Further, this position for supporting the detection unit is a position where maintenance and inspection of the detection unit are easy. Therefore, there is provided a saddle stitching apparatus in which a malfunction is less likely to occur in incorrect page detection, the reliability is high, and maintenance and inspection of the detection unit are easy.

According to a second aspect of the present invention, in the saddle stitching apparatus according to the first aspect, the support member causes the detecting section of the misaligned page detector to be in one of an operating position and a retracted position. Is provided with a displacement mechanism for displacing to the position. According to the present invention, the detection unit of the incorrect page detector can be displaced to any one of the operating position and the retreat position by the displacement mechanism of the support member. Therefore,
Provided is a saddle stitching apparatus in which maintenance and inspection of a detection unit are extremely easy.

According to a third aspect of the present invention, there is provided the saddle stitching machine according to the first or second aspect, wherein the signature is stopped at the register stopper, and the signature is detected by the irregularity detector. This has a synchronization means for synchronizing the detection and the detection. According to the invention, a stop at the register stopper of the signature by the synchronization means,
The detection of the signature by the incorrect page detector is synchronized. Therefore, the deviation of the signature detection position is small, malfunction does not easily occur, and the reliability is high.

A saddle stitching machine according to a fourth aspect of the present invention is the saddle stitching machine according to any one of the first to third aspects, wherein a setting input of a misalignment detector corresponding to each of the plurality of feeder units. And a centralized monitoring panel for misaligned detectors which performs the display of the status in a concentrated manner. According to the present invention, the setting input and the status display of the misalignment detector corresponding to each of the plurality of feeder units are performed in a concentrated manner on the misalignment detector centralized monitoring panel.

According to a fifth aspect of the present invention, there is provided the saddle stitching apparatus according to any one of the first to fourth aspects, wherein the centralized patrol detector central monitoring panel includes a detection level of each of the incorrect pagination detectors. And an indicator for displaying a set threshold value, a storage start button for storing reference data and starting misalignment detection, and a level setting button for manually setting a threshold value. According to the present invention, in the patrol detector centralized monitoring panel, the detection level of each patrol detector and the set threshold are displayed by the indicator, the reference data is stored by the storage start button, and the patrol detection is started, and the level setting button is used. The threshold is set manually.

According to a sixth aspect of the present invention, there is provided a misaligned page detector including a detecting section and a processing section, wherein the detecting section is supported by a register stopper constituting section of the saddle stitching apparatus. The processing unit calculates the degree of coincidence between the detection target image and the reference image. ADVANTAGE OF THE INVENTION According to this invention, the detection part of an incorrect page detector can be supported by the register stopper component part of a saddle stitching machine. In a saddle stitching machine, a register stopper is provided for determining a stop position of a signature. In other words, if the detection unit is supported here, the deviation of the detection position of the signature is small, and a malfunction does not easily occur, and the reliability is high. Further, this position for supporting the detection unit is a position where maintenance and inspection of the detection unit are easy. Therefore, there is provided a misplaced detector which is less likely to malfunction, has high reliability, and facilitates maintenance and inspection of the detection unit.

According to a seventh aspect of the present invention, there is provided the misaligned page detector according to the sixth aspect, wherein the detecting section includes an illuminating unit using a light emitting diode and an imaging unit using an image sensor. According to the present invention, the stability of illumination and the definition of detected image data are high, and the reliability of operation is also high. According to an eighth aspect of the present invention, in the misalignment detector according to the sixth or seventh aspect, the processing unit performs an operation that allows a positional shift between the detection target image and the reference image. . According to the present invention, the reliability of the determination is increased because the calculation for allowing the displacement is performed.

[0014]

Next, the present invention will be described with reference to embodiments. First, the configuration of the saddle stitching apparatus is shown in FIG.
In FIG. 1, F1, F2, F3 and F4 are feeders and S
1, S2, S3, S4 are signatures, G is a gathering chain, DM is a motor, DS1, DS2 are drive shafts, T1, T2, T3 are cutting blades, and HA is a stitcher. The signatures S1, S2, S3, S4 put into the feeders F1, F2, F3, F4 are pulled out by the respective feeder drums 14 thereunder, and both sides of the signatures are opened by the respective opening drums 22 and fall. Is mounted on the gathering chain G in a straddling manner.

The operation of each feeder F and the conveyance by the gathering chain G are synchronized, and the signature S1 is placed on the gathering chain G, and the signature S is placed on the signature S1.
The signatures are stacked in a predetermined order such that the signature S2 is placed, the signature S3 is placed on the signature S2, the signature S4 is placed on the signature S3, and so on. The stacked signatures are fixed using a wire at the center page by a stitcher HA, and three sides (top and bottom) except for the side fixed by the wire by a three-way cutting machine having cutting blades T1, T2, and T3 are set in a predetermined manner. Cut off makeup at position. Thus, the stacked signatures become a saddle stitch book, that is, a product book. further,
The product bundle is collected in a fixed number to form a product bundle, and an operator carries out caramel packaging of this product bundle before shipping.

FIG. 2 shows the location of the misalignment detector in the saddle stitching machine equipped with the misalignment detector according to the present invention. In FIG. 2, F is a feeder, S is a signature, G is a gathering chain, 14 is a feeder drum, 20 is a lap drum, 22 is an opening drum, 31 is a register stopper support shaft, 32 is a register stopper, 33 is a pressing roller, 34 is a guide bar, 101a and 101b are support members, and 102a and 102b are imaging means. In the example of the saddle stitching apparatus shown in FIG. 1, the feeder is provided above the feeder drum, but in the example of the saddle stitching apparatus shown in FIG. 2, the feeder is provided on the side of the feeder drum. As described below, the present invention can be applied to any type of feeder.

In the saddle stitching apparatus, the position of the register stopper is adjusted according to the top and bottom size of the signature. The register stopper is supported by a register stopper support shaft, and the position of the register stopper can be adjusted by adjusting the position of the register stopper support shaft. In FIG. 2, the position of the register stopper support shaft 31 can be adjusted on an arc around the rotation axis of the feeder drum 15. In FIG. 2, the arc is indicated by a dashed line.
Although not shown in FIG. 2, the adjustment of the register stopper support shaft 31 can be performed by operating an adjustment handle or driving a motor.

The register stopper support shaft 31 supports the detection unit 102a of the misalignment detector via the support member 101a. Register stopper support shaft 31, register stopper 32, holding roller 33, guide bar 34,
Thus, a register stopper component is formed. In the example shown in FIG. 1, the support member 101a of the detection unit 102a
Is provided on the register stopper support shaft 31, but may be provided on another portion of the register stopper constituting portion. A feature of the present invention is that the support member 101a of the detection unit 102a is provided in a portion where a predetermined position is determined integrally when the position of the register stopper 32 is adjusted according to the top and bottom dimensions of the signature. It is.

FIG. 3 shows a change in the position of the support member 101a of the detector 102a when the position of the register stopper support shaft 31 is changed. In FIG. 3, when the top and bottom dimensions of the signature are small, the register stopper constituting portion has the arrangement shown by the register stopper support shaft 31c, the register stopper 32c, the holding roller 33c, the guide bar 34c, the support member 101c, and the detection section 102c. . In FIG. 3, when the signature has a large top and bottom dimension, the register stopper constituting part includes the register stopper support shaft 3.
1d, register stopper 32d, holding roller 33
d, guide bar 34d, support member 101d, detector 10
The arrangement shown in FIG.

Returning to FIG. 2, the description will be continued. Support member 10
Reference numeral 1a has a displacement mechanism for displacing the detection unit 102a of the incorrect page detector to any one of the operating position and the retreat position. In FIG. 2, a support member 101a and a detection unit 102a
Indicates a state in which it is in the operating position. FIG. 2 shows a state in which the support member 101b and the detection unit 102b are in the retracted position. The operating position is the position where the incorrect page detector can perform its operation. The retracted position facilitates work by the operator around the feeder drum 14 and the register stopper component, although the incorrect page detector cannot perform its operation.

FIG. 4 shows an example of a supporting member for supporting the detecting portion of the incorrect page detector. FIG. 4A is a side view, and FIG. 4B is a top view. In FIG. 4, reference numeral 401 denotes a support seat;
Is an arm, 403 is a mounting base, 404a and 404b are mounting holes, 405 is a rotating shaft, 406a, 406b and 406c are fixing holes, 407 is a fixing key, 408 is a ball, and 409 is a spring. The support seat 401 is a member for fixing the support member 101a to a register stopper component of the feeder F. The arm 402 connects the mounting base 403 and the support seat 401. The mounting base 403 is provided with mounting holes 404a and 404b, and has a structure to which a detection unit of a misalignment detector is mounted.

The support seat 401 has a portion matching the register stopper constituting portion and a portion matching the arm 402. In the part that fits the arm 402,
The arm 402 is rotatably connected to the support seat 401 about a rotation shaft 405. The rotation shaft 405 can be constituted by a bolt and a nut. Fixing holes 406a, 406b, and 406c are provided in portions that match the arms 402. The arm 402 is also provided with a hole. By rotating the arm 402, the holes and the fixing holes 406a, 406
b, 406c are matched. By inserting the fixed key 407 into the hole, the arm 402 is
Can not be rotated and can be fixed.

The arm 402 has a hole which is open on the side of the support seat 401 and closed on the other side. A ball 408 and a spring 409 are housed in the hole. At the end of the portion of the support seat 401 that matches the arm 402,
Three arcs are formed to match the ball 408. The spring 409 is placed in close contact with any of the three arcs.
Presses the ball 408. With this configuration, regardless of whether the fixed key 407 is used or not, the ball 408 is
Three mechanically stable states in close contact with either of the two arcs are obtained. The transition between the three mechanically stable states can be performed by removing the fixed key 407 and then manually operating the arm 402 by an operator. In the three mechanically stable states, the hole of the arm 402 and the fixing holes 406a, 406
b, 406c.

FIG. 5 shows an example of a saddle stitching machine in which a feeder is provided above a feeder drum, in which a detection unit of a misalignment detector is provided. In FIG. 5, F is a feeder, S is a signature, G is a gathering chain, 14 is a feeder drum, 20 is a lap drum, 22 is an opening drum, 31 is a register stopper support shaft, 32 is a register stopper, 34 is a guide bar, 101e is a support member, and 102e is an imaging means. As shown in FIG. 5, this type of saddle stitching apparatus can also be configured similarly to the above-described saddle stitching apparatus shown in FIG. Since the configuration and operation are clear from FIG. 5 and the above description, the description is omitted.

Next, a misaligned detector will be described. FIG. 6 is a flowchart showing the process of the operation of the incorrect page detector according to the present invention. Turn on the power of the incorrect page detector. While the saddle stitching apparatus is in operation, it is checked whether a trigger signal has been input. The trigger signal is a signal that gives a timing at which the detection unit of the incorrect page detector captures an image, and is output in synchronization with the operation of the saddle stitching apparatus. For example, it is generated based on an output signal of a rotary encoder 62 that detects rotation of the drive shafts DS1 and DS2 of the saddle stitching machine or a rotary encoder 62 that detects rotation of the feeder drum 14 (see FIG. 1). The presence or absence of the input of the trigger signal can be confirmed by the blinking of the storage completion lamp.

In this state, the operator inputs an instruction to read the reference data. Step S1 in FIG.
In, reference data is read. The detection unit of the misalignment detector has built-in illumination means using light-emitting diodes emitting red or green light and imaging means using an image sensor such as a CCD, and images a predetermined imaging area to generate image data. The reference data and the detection data are data based on the imaging data. The reference data is determined based on a predetermined number (for example, 6) of signature detection data read and based on the detection data.

In step S2, a threshold value of a level for detecting an abnormality is set based on the detection data. This level threshold is a threshold for distinguishing a range of the matching degree that is normal from a range of the matching degree that is abnormal based on the degree of matching with the reference data. Further, even if an abnormality occurs in the determination based on the coincidence, the abnormality may occur accidentally due to noise or the like. Therefore, instead of immediately outputting the abnormality, a threshold value for the number of times that the abnormality based on the coincidence determination continuously occurs is set. Then, only when the number of times exceeds the threshold value, an abnormal output (misaligned detection output) is performed. The setting of the number threshold is also performed.

Next, in step S3, a determination is made as to whether or not to continue the incorrect page detection. If there is a signal input or the like for stopping the operation of the incorrect page detection, the incorrect page detection is ended here. If not, the process proceeds to step S4, and the incorrect page detection is continued. Next, in step S4, detection data obtained by detecting the signature by the detection unit of the incorrect page detector is read into the processing unit of the incorrect page detector. The steps up to this point are preparation, and it is from this step that misalignment detection has really started.

Next, in step S5, the processing section of the incorrect page detector determines whether or not the page is correct based on the detection data. In this suitability determination process, the degree of coincidence with the reference data is calculated, and if the degree of coincidence is normal, it is determined to be normal. In addition, if the degree of coincidence is determined to be abnormal, it is determined that there is no abnormality (provisional abnormality), and how many times the abnormality determination continues is counted. If there is detection data determined to be normal during the counting, the count value is reset. If abnormality continues, the count value is added each time. The count value is constantly compared with a set threshold value, and when the count value is exceeded, an abnormality detection (true abnormality) is output.

As the degree of coincidence, for example, the correlation coefficient value between the reference data and the detection data is set to coincide with the sum of the squares of the differences between the corresponding data (pixel values) between the reference data and the detection data. It can be calculated by the degree or the like. At this time, the calculation is performed by shifting the position in the correspondence between the reference data and the detection data, and the value having the highest matching degree among the plurality of matching degree values can be adopted as the true matching degree. Thereby, even if there is a displacement between the reference data and the detection data, the displacement is allowed.

Next, in step S6, it is determined whether or not the result of the suitability determination processing is abnormality detection (true abnormality). If no abnormality is detected, the process returns to step S3, and the above-described subsequent steps are repeated. If it is an abnormality detection, the process proceeds to step S7. Next, in step S7, the incorrect page detector outputs a stop signal for stopping the saddle stitching apparatus. Also, an alarm buzzer, an alarm lamp, and the like are operated. When the control unit of the saddle stitching machine inputs this stop signal, the control unit performs a control operation for stopping the saddle stitching machine. Next, in step S8, the apparatus is in a state of waiting for input of a reset signal. When a reset signal is input, step S
3 and the above-mentioned subsequent steps are repeated. Step S3 also occurs when an end signal is input instead of the reset signal.
The process ends when returning to step S3.

Next, the centralized monitoring panel of the misaligned detector will be described. FIG. 7 shows an example of a centralized monitoring panel of the misalignment detector of the present invention.
Shown in FIG. 8 is a partially enlarged view of the centralized monitoring panel. 7 and 8, reference numeral 71 denotes an alarm lamp, reference numeral 72 denotes an alarm buzzer, reference numeral 73 denotes a portion corresponding to one unit of a misalignment detector,
4 is a memory start button, 75 is an abnormality display lamp, 76 is an indicator, 77 is a level setting button, 78 is an alarm stop button,
79 is a reset button. The alarm lamp 71 and the alarm buzzer 72 operate when the irregularity detector detects an abnormality in the signature, and notify an operator.

As shown in FIG. 7, a plurality of portions corresponding to the portion 73 of one unit of the misalignment detector are arranged on the centralized monitoring panel. Normally, the same number of units of the misalignment detector are arranged on the centralized monitoring panel corresponding to each collating unit of the saddle stitching apparatus. FIG. 8 is an enlarged view of a portion 73 of one unit of the random page detector. In FIG. 8, a storage start button 74 is a push button switch for storing reference data and starting misalignment detection. The abnormality display lamp 75 is turned on when the incorrect page detector detects an abnormality. This abnormality includes the abnormality (temporary abnormality) described in the flowchart of FIG. On the other hand, the alarm lamp 71 and the alarm buzzer 72 operate only when a true abnormality is detected.

The indicator 76 displays the degree of coincidence and the set level threshold (see step S2 in FIG. 6). The degree of match is
It is indicated by the number of connected rectangles, that is, the length of the bar display. When the degree of coincidence is high, the length of the bar display is short, and when the degree of coincidence is low, the length of the bar display is long. The display of the degree of coincidence is updated each time the incorrect page detector performs the suitability determination process (step S5 in FIG. 6). The set level threshold is displayed as a triangle.
Abnormality (temporary abnormality) will be detected if the value exceeds the set level threshold indicated by the triangle.

The level setting button 77 is used when an operator manually changes the set level threshold value. Alarm stop button 78
Stops the operation of the alarm lamp 71 and the alarm buzzer 72. The reset button 79 is a push button switch by which an operator inputs an instruction to restore the operation of the misalignment detection device after the stop signal is output upon detection of an abnormality and the saddle stitching machine stops.

[0036]

As described above, according to the saddle stitching apparatus according to the first aspect of the present invention, a malfunction is less likely to occur in detecting a misplacement, the reliability is high, and the maintenance and inspection of the detecting section are easy. Is provided. Further, according to the saddle stitching apparatus according to the second aspect of the present invention, there is provided a saddle stitching apparatus in which maintenance and inspection of the detection unit are extremely easy. Further, according to the saddle stitching apparatus according to the third aspect of the present invention, the deviation of the signature detection position is small, malfunction does not easily occur, and the reliability is high. According to the saddle stitching apparatus according to the fourth aspect of the present invention, the setting input and the status display of the misalignment detector corresponding to each of the plurality of feeder units are performed in a concentrated manner on the misalignment detector centralized monitoring panel. According to the saddle stitching apparatus according to claim 5 of the present invention, the detection level and the set threshold value of each of the misalignment detectors are displayed by the indicators on the misalignment detector centralized monitoring panel, and the reference data is stored by the storage start button. The detection of incorrect pages is started, and the threshold value is manually set by the level setting button.

Further, according to the present invention, there is provided a misplaced detector which is less likely to malfunction and has high reliability, and which facilitates maintenance and inspection of the detecting portion. Further, according to the misalignment detector according to claim 7 of the present invention, the stability of illumination and the definition of detected image data are high, and the reliability of operation is also high. Further, according to the misplaced page detector according to claim 8 of the present invention, since the calculation for allowing the positional deviation is performed, the reliability of the determination is increased.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a saddle stitching apparatus.

FIG. 2 is a diagram showing a place where a misalignment detector is installed in a saddle stitching machine having the misalignment detector according to the present invention.

FIG. 3 is a diagram illustrating a change in the position of the support member of the detection unit when the position of the register stopper support shaft is changed.

FIG. 4 is a diagram illustrating an example of a support member that supports a detection unit of the incorrect page detector.

FIG. 5 is a diagram illustrating an example of a saddle stitching machine in which a feeder is provided above a feeder drum, in which a detection unit of a misalignment detector is provided.

FIG. 6 is a flowchart showing a process of an operation of the incorrect page detector according to the present invention.

FIG. 7 is a diagram showing an example of a centralized monitoring panel of a misaligned page detector according to the present invention.

FIG. 8 is a diagram showing an example of a centralized monitoring panel of the misaligned page detector according to the present invention.

[Explanation of symbols]

 F, F1, F2, F3, F4 Feeder S, S1, S2, S3, S4 Signature G Gathering chain DM motor DS1, DS2 Drive shaft T1, T2, T3 Cutting blade HA Stitcher 14 Feeder drum 20 Lapping drum 22 Opening drum 31 Register stopper support shaft 32 Register stopper 33 Holding roller 34 Guide bar 71 Alarm lamp 72 Alarm buzzer 73 Part corresponding to one unit of misalignment detector 74 Memory start button 75 Error display lamp 76 Indicator 77 Level setting button 78 Alarm stop button 79 Reset Button 101a, 101b Supporting member 102a, 102b Imaging means 401 Support seat 402 Arm 403 Mounting base 404a, 404b Mounting hole 405 Rotating shaft 406a, 406b, 406c Fixing hole 407 Fixed key 408 Ball 409 Spring

Claims (8)

[Claims] 1. A saddle stitching machine equipped with a misaligned book detector, wherein a register stopper constituting part of a feeder unit of the saddle stitched machine supports a detecting section of the misaligned book detector through a support member. Saddle stitching machine featuring. 2. A saddle stitching machine according to claim 1, wherein said support member has a displacement mechanism for displacing a detecting portion of said misaligned detector to one of an operation position and a retreat position. Saddle stitching machine featuring. 3. The saddle stitching apparatus according to claim 1, further comprising a synchronizing means for synchronizing a stop of the signature at the register stopper and a detection of the signature by the irregularity detector. Saddle stitching machine. 4. The centralized bookbinding machine according to claim 1, wherein the setting input and the status display of the misalignment detector corresponding to each of the plurality of feeder units are centrally monitored. A saddle stitching machine having a board. 5. The saddle stitching apparatus according to claim 4, wherein the centralized monitoring panel of the misaligned detectors has an indicator for displaying the detection level of each of the irregularity detectors and a set threshold value, and stores reference data to detect misaligned pages. A saddle stitching machine provided with a storage start button for starting and a level setting button for manually setting a threshold value. 6. A pamphlet detector comprising a detecting section and a processing section, wherein the detecting section has a structure to be supported by a register stopper constituting section of the saddle stitching machine, and the processing section is configured to detect an image to be detected. A misalignment detector, which calculates the degree of coincidence between a reference image and a reference image. 7. A misaligned page detector according to claim 6, wherein said detecting section includes an illuminating unit using a light emitting diode and an image capturing unit using an image sensor. 8. The misaligned page detector according to claim 6, wherein the processing unit performs an operation that allows a positional shift between the detection target image and the reference image.