JP4372902B2 - Guru detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of bookbinding. In particular, it belongs to the technical field of detecting a guru, which is a walnut book that misplaces the cover and the top and bottom of the book during bookbinding.
[0002]
[Prior art]
There is a guru detection device that detects an error in the top and bottom when supplying the contents (text) of a walnut book in a wireless binding machine (upper binding machine). This type of guru detection device makes a pass / fail judgment based on the back mark (the mark on the back) of the contents. In order to make it easy to distinguish the order of the signatures, numbers indicating the name of the book and the order of folding are imprinted on the back of the signatures (backs). In addition, in order to make it easy to find missing pages, random pages, captures, etc., a mark is imprinted on the back of the signature at a position that is aligned with a diagonal line when correctly collated (back sign). Since the back of the contents has a characteristic back mark due to this back and sign, for example, the part where the shading changes due to an error in the top and bottom is detected by an optical sensor, and the error in the top and bottom is detected based on that. It is being detected.
[0003]
[Problems to be solved by the invention]
However, since the above-described gull detection device detects the density of the spine present on the back of the contents, it detects the density of the spine if the binding is difficult to appear and is not stable (for example, Ajiro binding). I can't. Further, when the back mark is a color in a color printed matter, it is difficult to detect the shading of the back mark. That is, there is a problem that the above-described glu detection device cannot be used, or even if it can be used, there are many malfunctions that hinder production.
[0004]
Further, the above-described guru detection device is a content guru (text guru) detection device and not a cover guru detection device. In a general wireless binding machine, perfect binding does not occur first because wireless binding is a continuous process from collation. However, the content gluing detection device is important in the throwing work of the spelling bookbinding. On the other hand, the cover is supplied by the operator in the perfect binding machine, and many covers can be supplied at a time. Therefore, even if the frequency of occurrence is small, a large amount of cover sheet glue is generated.
[0005]
The present invention has been made to solve the above problems. The purpose is to solve the problems of the conventional guru detection device that cannot be highly reliable because it is affected by the presence or absence and state of the spine present on the back of the contents. That is, it is an object of the present invention to provide a guru detection device that can detect an error in the top and bottom of a walnut book cover with high reliability.
[0006]
[Means for solving the problems]
The above problems are solved by the present invention described below. In other words, the glu detection device according to claim 1 of the present invention includes an image pickup means for picking up the cover of the walnut book after forming the cover as a walnut book in the wireless binding apparatus, and a captured image obtained by the image pickup means. A color area calculating means for calculating an area of a predetermined color in a predetermined determination area, and a determining means for determining whether or not the orientation of the cover of the walnut book is appropriate based on the area calculated by the color area calculating means. It is what I did. According to the present invention, the suitability is determined based on the captured image of the cover, which is not the contents of the walnut book but the image is more stable than that. In addition, the suitability determination is performed based on the area of a predetermined color in a predetermined determination area in which the shape and / or color of the image largely changes due to an upside-down error in the captured image of the cover. Therefore, there is provided a guru detection device capable of detecting an error in the top and bottom of the cover of the walnut book with high reliability.
[0007]
According to a second aspect of the present invention, there is provided a glu detection device comprising: an imaging means for capturing an image of a cover of the walnut book and outputting an imaging signal after the cover is formed as a walnut book in the wireless binding machine; Illuminating means for illuminating the imaging area of the means, A / D conversion (analog-to-digital converting) means for inputting the imaging signal and converting it to digital data to obtain a captured image, and a determination area within the captured image Determination area setting means for setting, a designated color setting means for setting a specified color from display colors in the determination area, and a specified color area extracting means for extracting the specified color area from the determination area based on the specified color A designated color area number counting unit that counts the number of pixels of the designated color area and outputs the designated color area number, a reference designated color area number that is the designated color area number of the cover serving as a judgment reference, and a determination target Table And a pass / fail judgment means for performing pass / fail judgment output of the orientation of the cover by comparing with the number of designated color areas to be inspected, which is the number of designated color areas of the paper.
[0008]
According to the present invention, after the cover is made into a walnut book with a cover in the wireless binding machine, the cover of the walnut book is picked up by the image pickup means and an image pickup signal is output, and the image pickup area of the image pickup means is illuminated by the illumination means. The A / D conversion means inputs the image pickup signal and converts it into digital data to obtain a picked-up image. The determination area setting means sets a determination area inside the picked-up image, and the designated color setting means displays the display color in the determination area. The specified color area is extracted from the determination area based on the specified color by the specified color area extracting means, the number of pixels of the specified color area is counted by the specified color area count counting means, and the specified color area number Is output, and the number of reference specified color areas, which is the number of specified color areas of the cover that is the determination reference by the quality determination means, and the number of specified color areas of the cover that is the determination target Quality determination output of the orientation of the cover and the elephant specified color area number is compared is made. According to the present invention, the suitability is determined based on the captured image of the cover, which is not the contents of the walnut book but the image is more stable than that. In addition, the suitability determination is performed based on the area of a predetermined color in a predetermined determination area in which the shape and / or color of the image largely changes due to an upside-down error in the captured image of the cover. Therefore, there is provided a guru detection device capable of detecting an error in the top and bottom of the cover of the walnut book with high reliability.
[0009]
The gluing detection device according to claim 3 of the present invention is the gluing detection device according to claim 2, wherein the walnut book is transported on a belt conveyor, and the walnut book has reached a predetermined position. And arrival detection means for outputting a arrival signal, and the imaging means performs the imaging in synchronization with the arrival signal. According to the present invention, the walnut book carried on the belt conveyor is subject to guru detection.
According to a fourth aspect of the present invention, there is provided the gull detection device according to the second or third aspect, wherein the gluing detection device according to the second or third aspect includes an imaging region setting unit that sets the imaging region in which the illumination unit illuminates and the imaging unit performs imaging. It is what you have. According to the present invention, the gull detection device according to claim 5 of the present invention, which can appropriately set the imaging region, is the above-described pass / fail determination output in the glu detection device according to any one of claims 2 to 4. , And the walnut book determined to be defective is classified as non-defective and discharged. According to the present invention, the defective product of the front cover group is discharged separately from the non-defective product.
A gull detection device according to claim 6 of the present invention is the gull detection device according to any one of claims 2 to 5, wherein the alarm output for performing the alarm output when the pass / fail determination output is input and the determination is a defective product. It has a means. According to the present invention, an alarm is output when a defective cover guru is detected.
According to a seventh aspect of the present invention, there is provided the guru detection device according to any one of the second to sixth aspects, wherein the wireless communication is performed when the good / bad determination output is input and a defective product is continuously determined a predetermined number of times. It has stop signal output means for outputting a stop signal for stopping the operation of the binding apparatus. According to the present invention, when the defective product of the front cover group is continuously detected, the operation of the wireless binding machine is automatically stopped.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described. First, an overall image of the guru detection device of this embodiment will be described. An example of the configuration of the guru detection device of this embodiment is shown in a pictorial diagram in FIG. FIG. 2 shows an example of the installation of the glue detection device of the present embodiment in the wireless binding machine, and FIG. 3 shows an example of the configuration of the wireless binding unit. In FIG. 1, 1 is an imaging means, 2 is an illumination means, 3 is a main body of a guru detection device, 4 is an alarm means, 5 is an arrival detection means, 6 is an imaging area setting means, 7 is an operation input means, and 31 is a display monitor. , 32 is an abnormal return button switch, 33 is a machine stop button switch, 34 is a setting / operation switching switch, 100a, 100b, and 100c are walnut books, and 104 is a laydown conveyor. In FIG. 2, 101 is a collating machine, 102 is a binder, 103 is a cover feeder, 104 is a laydown conveyor, 105 is a gluing detection position, 106 is a defective product discharging means, and 107 is a three-way cutter. In FIG. 3, 201 is a vibrator part, 202 is a milling part, 203 is a sanding part, 204 is a roughing part, 205 is a brushing part, 206 is a back glue part, 207 is a horizontal glue part, 208 is a cover feeder, 209 A cover walnut tuning unit, 210 is a press unit, 211 is a binder outlet, and 211 is a laydown unit.
[0011]
The imaging means 1 is a camera (imaging device) having an area sensor such as a CCD (charge coupled device) and an imaging optical system. The imaging unit 1 captures the cover and outputs an imaging signal after the cover is made into a walnut book with a cover in the wireless binding machine. In the example shown in FIGS. 1, 2, and 3, the walnut books 100 a, 100 b, and 100 c are laid down on the laydown conveyor 104 and conveyed so as to flow. The laydown conveyor 104 is provided downstream of the cover feeder 103 and upstream of the defective discharge means 106. A gul detection position 105 is provided in the immediate vicinity of the laydown conveyor 104. The imaging means 1 images the walnut books 100a, 100b, and 100c at the guru detection position 105.
[0012]
The illumination unit 2 illuminates the imaging area of the imaging unit 1. The illumination means 2 can be a ring-shaped fluorescent lamp, a metal halide lamp, a halogen lamp, a xenon lamp, or the like, or a well-known illuminating device in which an optical fiber or a reflecting mirror is combined therewith, and is not particularly limited. There may be special conditions at the guru detection position 105, such as fluctuations in external light. Treatments such as shading and obtaining sufficient illuminance so as not to adversely affect imaging are natural design matters.
[0013]
The main body 3 is a part that inputs an image pickup signal of the image pickup means 1 and performs a calculation to determine pass / fail. The main body 3 can be configured by hardware and software of a data processing device such as a personal computer, a microcomputer, and a dedicated arithmetic device. As shown in FIG. 1, a display monitor 31, an abnormal return button switch 32, a machine stop button switch 33, a setting / operation changeover switch 34, etc. are attached to the panel of the main body 3. Details of the configuration and operation of the main body 3 will be described later.
[0014]
The alarm output means 4 inputs the quality determination data of the main body 3. Then, when the pass / fail judgment data indicates a defective product, that is, when a guru is detected, an alarm is output. The alarm output means 4 can be constituted by a buzzer and a relay circuit for turning on / off the power supplied to the buzzer.
[0015]
The arrival detection means 5 detects that the walnut books 100a,... Being carried on the laydown conveyor 104 have reached a predetermined position, and outputs an arrival signal. The predetermined position is usually a position where the walnut book is within the imaging area. The arrival detection means 5 can be constituted by a reflection type or transmission type optical switch having a light projecting part and a light receiving part.
[0016]
The imaging area setting unit 6 sets an imaging area in which the above-described illumination unit 2 illuminates and the imaging unit 1 performs imaging. In the example illustrated in FIG. 1, the imaging unit 1 performs imaging through a hole in the center of the ring of the illumination unit 2 having a ring-shaped fluorescent lamp, and the imaging unit 1 and the illumination unit 2 are integrated. It has become. The imaging area setting unit 6 supports the integrated imaging unit 1 and the illumination unit 2 in a space above the laydown conveyor 104 so as to be movable and fixed. As shown in FIG. 1, the imaging region setting means 6 includes a stage with a handle that supports the imaging means 1, an arm that supports the stage at one end, and a fixed end that is fixed to a table. And a support member with a lever to be liberated.
[0017]
The operation input means 7 is a part of the guru detector in which an operator performs input for operating the guru detector. It is mainly used for setting input such as a judgment area and a designated color.
[0018]
Here, a simple binding machine to which the glue detection device of this embodiment is applied will be briefly described. As described above, in the bookbinding machine shown in FIG. 2, the bookbinding machine has a configuration in which the collating machine 101, the binder 102, the cover feeder 103, the laydown conveyor 104, the defective product discharging means 106, the three-way cutting machine 107, and the like are connected. Have. The guru detection position 105 is in the vicinity of the laydown conveyor 104. The collating machine 101 performs an operation of arranging the signatures in the order of each folding and collecting them one by one.
[0019]
The binder 102 and the cover feeder 103, that is, the wireless binding portion, a detailed picture is shown in FIG. In FIG. 3, the vibrator unit 201 aligns the positions of the back portions of the signatures collected one by one and flattens the back portion. The milling unit 202 cuts the back part. Sanding part 203 finishes the milled back part. The roughing unit 204 inserts gully. The brushing unit 205 adheres to the back portion and removes paper dust. The back glued portion 206 applies glue (hot-melt adhesive) to the back portion that has been roughened. The horizontal gluing unit 207 applies glue to the center of the book.
[0020]
A cover walnut unit 207 supplies a cover. The cover-case synchronizer 209 synchronizes the cover and a single signature (referred to as “contents”) that are put together, and pastes the case at a predetermined position. The press part 210 presses and adheres to the back part after bonding, completes the gluing, and forms the walnut book. The walnut book is discharged from the binder outlet 211 and is laid down and transferred by the laydown unit 212.
[0021]
The walnut book on the laydown conveyor 104 is detected at a glu detection position 105 by a gul detection device. Furthermore, it is conveyed by the conveyor, reaches the defective discharge means 106, and if the walnut book is a defective product, that is, a guru, the defective discharge means 106 discharges it to the defective product stack. When the walnut book is a non-defective product, it reaches the three-way cutting machine 107, and the three-way cutting machine 107 performs makeup cutting and discharges it to the good product stack.
[0022]
Next, data processing in the guru detection device of this embodiment will be described. An example of the configuration of the data processing means in the guru detection device of this embodiment is shown in a block diagram in FIG. In FIG. 4, 1 is an imaging means, 2 is an illumination means, 4 is an alarm output means, 5 is an arrival detection means, 6 is an imaging area setting means, 71 is a determination area setting means, 72 is a designated color setting means, and 104 is a walnut. This conveying means (laydown conveyor), 106 is a defective product discharging means, 108 is a non-defective product discharging means, 301 is an A / D conversion means, 302 is an image storage means, 303 is a designated color area extracting means, and 304 is a number of designated color areas. 305, a reference designated color area number storage means, 306, an inspection object designated color area number storage means, 307, pass / fail judgment means, and 308, a stop signal output means.
[0023]
Moreover, the data processing process in the guru detection apparatus of this embodiment is shown in a flowchart in FIGS. FIG. 5A is a flowchart of the entire data processing process in guru detection. The glu detection process is roughly composed of a setting process in step S1 and an operation process in step S2. FIG. 5B shows a detailed process of the setting process in step S1, and FIG. 6 shows a detailed process of the operation process in step S2.
[0024]
Data processing in the guru detection device of this embodiment will be described based on FIGS. The walnut book is transported to the guru detection position 105 by the walnut book transport means (laydown conveyor) 104 by, for example, manually inserting a walnut book that is already in progress in the wireless binding machine or during pause. Shall. First, in step S101 (imaging area setting) in the setting process, the operator sets the setting / operation switch. In addition, the imaging region setting unit 6 sets the imaging region by adjusting the positions of the imaging unit 1 and the illumination unit 2 so that an appropriate region is captured in the walnut book being conveyed (FIG. 1 and its description). reference). The imaging area of the imaging means 1 is illuminated by the illumination means 2. At this time, the positional relationship with the arrival detection means 5 is considered, but the position of the arrival detection means 5 is also set as necessary.
[0025]
Next, in step S102 (reference screen registration), the arrival detection means 5 detects that the walnut book being conveyed has reached the imaging region, and outputs an arrival signal. The imaging means 1 inputs the arrival signal, and performs imaging in synchronization with the arrival signal, thereby imaging the cover of the walnut book and outputting the imaging signal. An A / D conversion (analog-to-digital converting) unit 301 converts an imaging signal, which is an analog signal, into digital data and generates a captured image. The captured image is stored in the image storage unit 302. The operator inputs an instruction to display the captured image stored in the image storage unit 302 on the monitor 31 (see FIG. 1) of the main body 3 from the operation input unit 7, and there is a defect in the captured image, for example, the imaging range is inappropriate. , Whether or not there is an out of focus (out of focus), etc. If there are deficient points, repetitive imaging is performed after removing the deficiencies. If there are no deficiencies, go to the next step.
[0026]
Next, in step S103 (determination area setting), the operator sets a determination area based on the captured image displayed simultaneously on the monitor 31 and the determination area frame. That is, when the determination area frame is operated and an appropriate position and size are obtained, an instruction input for setting the determination area is performed from the operation input means 7. The determination region is filled with a pattern having a large area of one color, and when the cover is turned in the opposite direction, the same color is not present, or a cover region having a large difference in area even if there is the same color is appropriate. The determination area is set by the determination area setting means 71, and the data of the set determination area is stored by the determination area setting means 71.
[0027]
Next, in step S104 (specified color setting), the operator sets the specified color in the captured image inside the determination area frame displayed on the monitor 31. The designated color is not the same color as the designated color when the cover is turned in the opposite direction, or the color of the part of the pattern having a large area difference even if the same color exists. When the designated color is set, the number of pixels corresponding to the area of the designated color in the determination area, that is, the area of the designated color area is counted. This counting process is performed by the following steps. That is, first, when the determination area and the specified color are set, the specified color area is extracted by the specified color area extracting unit 303. Next, the number of designated color areas is counted by the designated color area number counting means 304. The number of designated color areas is stored in the reference designated color area number storage means 305. The operator can confirm the number of pixels in the designated color area and can be used as a reference for setting the designated color.
[0028]
Next, in step S105 (allowable range setting), the operator sets an allowable range of the number of pixels in the designated color region. Even with a good walnut book, the number of pixels in the designated color region changes every time an image is taken due to subtle changes in the picture density of the cover and the imaging conditions. The permissible range is to prevent this normal fluctuation from being erroneously determined as guru. However, if the allowable range is increased too much, an erroneous determination that a defective walnut book is a non-defective product will occur. Therefore, it is necessary to set an appropriate allowable range. The allowable range is equivalent to setting an upper limit value and a lower limit value for the number of pixels in the specified color area described above. The upper limit value and lower limit value are stored in the pass / fail judgment means 307.
[0029]
Next, in step S106 (operation preparation), the setting / operation changeover switch is set to operation. A walnut book is made to flow in a normal direction on the laydown conveyor 104, and it is confirmed that a non-defective product determination is performed in the gluing detector. Next, a walnut book is made to flow in the direction opposite to normal in the laydown conveyor 104, and it is confirmed by an alarm or the like that a defective product is determined in the guru detector. If there is an abnormality in this operation check, the setting process is repeated. If there is no abnormality, the process proceeds to the next step “operation”.
[0030]
Next, the operation of the wireless binding machine is started, and the walnut book is conveyed by the laydown conveyor 104. In step S201 (arrival detection) in the driving process, the arrival detection means 5 continues to monitor the arrival of the walnut book at the predetermined position (S102), and the guru detector is in a standby state. When it is detected that the walnut book has reached a predetermined position, an arrival signal is output.
Next, in step S202 (imaging), the imaging means 1 images the cover of the walnut book in synchronization with the arrival signal. The imaging signal output by the imaging unit 1 is converted into digital data by the A / D conversion unit 301 to obtain a captured image.
Next, in step S <b> 203 (image storage), the captured image is stored in the image storage unit 302.
[0031]
Next, in step S204 (designated color area extraction), the designated color area extraction unit 303 extracts the designated color area from the determination area (S103) based on the designated color (S104).
Here, an example of a method for extracting the designated color region will be described. For example, an upper limit value and a lower limit value threshold are set for the primary color components RGB (red, green, blue) of the designated color. Then, the designated color region is defined as a set of pixels that satisfy all the threshold conditions. When brightness (brightness) changes even with the same color (hue), when extracting areas of the same color with different brightness, the threshold width between the upper limit value and the lower limit value is reduced in hue, and in brightness Enlarge. For example, for the RGB component, hue (r, g) and lightness (l) are calculated by the following formula 1, threshold values are set for hue (r, g) and lightness (l), and A designated color region is defined as a set of pixels that satisfy the condition.
[Expression 1]
l = R + G + B
r = R / (R + G + B)
g = G / (R + G + B)
[0032]
Next, in step S205 (counting the number of areas (areas)), the designated color area number counting means 304 counts the number of pixels of the designated color area and outputs the designated color area number. The number of designated color areas is stored in the detection target designated color area number storage means 306.
[0033]
Next, in step S206 (quality determination), the quality determination unit 307 stores the specified color area number of the reference image stored in the reference specified color area number storage unit 305 and the detection target specified color area number storage unit 306. Based on the number of designated color areas of the inspection target image and the acceptable range (upper limit value and lower limit value) stored in the pass / fail judgment means 307, the pass / fail judgment output of the cover of the walnut book is performed. As shown in FIG. 4, the pass / fail judgment output is input by the non-defective product discharge means 108, the defective product discharge means 106, the alarm output means 4, and the stop signal output means 308.
[0034]
The defective product discharging means 106 (defective product classification discharging means in the claims) shown in FIG. 2 is an apparatus for removing defective products (glu) from the production line, and the non-defective products remain on the manufacturing line and are continuously processed. The non-defective product discharging means 108 and the defective product discharging means 106 shown in FIG. When the defective product discharging means 106 and the non-defective product discharging means 108 receive the pass / fail judgment output, their operations are delayed until the walnut books that are the targets of the pass / fail judgment output are conveyed by the conveyor and reach their positions. . Their operation is synchronized with the arrival of the walnut book.
[0035]
The alarm output means 4 immediately outputs an alarm when the pass / fail judgment output is a defective product (guru). This alarm continues to be output unless the alarm is canceled by, for example, pressing the error recovery 32 button switch. On the other hand, when the pass / fail judgment output is a non-defective product, the state is kept as it is. That is, the alarm output is continued when there is an alarm output, and no alarm is output when there is no alarm output.
[0036]
The stop signal output means 308 inputs a pass / fail determination output and outputs a stop signal for stopping the operation of the binding device when the defective product is continuously determined a predetermined number of times. By stopping the operation of the binding device by this stop signal, it is possible to prevent a large number of defective products from being generated even under a situation where the operator cannot cope with the operation for a while.
[0037]
Next, in step S207 (end), it is determined whether or not to end the operation. For example, when the operator operates the machine stop button switch 33 to execute the machine stop, the operation data processing process shown in FIG. 6 is ended in this first step after the operation. If there is no such end instruction input, the process returns to step S201 described above and the subsequent processes are repeated.
[0038]
【The invention's effect】
As described above, according to the guru detection device of the first aspect of the present invention, there is provided a guru detection device capable of detecting the top and bottom errors of the cover of the walnut book with high reliability. Moreover, according to the guru detection device according to claim 2 of the present invention, there is provided a guru detection device capable of detecting an error in the top and bottom of the cover of the walnut book with high reliability. Further, according to the guru detection device of the third aspect of the present invention, the walnut book carried on the belt conveyor can be set as a glu detection target. Further, according to the guru detection device according to claim 4 of the present invention, it is possible to appropriately set the imaging region. According to the guru detection device according to claim 5 of the present invention, a defective product of the front cover guru is a non-defective product. Can be discharged separately. According to the guru detection device of the present invention, it is possible to detect a defective cover guru and output an alarm. According to the glue detecting device of the seventh aspect of the present invention, when the defective product of the cover glue is continuously detected, the operation of the wireless binding machine can be automatically stopped.
[Brief description of the drawings]
FIG. 1 is a pictorial diagram showing an example of the configuration of a guru detection device of the present invention.
FIG. 2 is a pictorial diagram showing an example of installation of the glue detection device of the present invention in a wireless binding machine.
FIG. 3 is a pictorial diagram showing an example of a configuration of a wireless binding unit in the wireless binding machine of the glue detection device of the present invention.
FIG. 4 is a block diagram showing an example of the configuration of data processing means in the guru detection device of the present invention.
FIG. 5 is a flowchart (part 1) showing a data processing process in the guru detection device of the present invention.
FIG. 6 is a flowchart (part 2) illustrating a data processing process in the guru detection device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Image pickup means 2 Illumination means 3 Glue detection device main body 4 Alarm means 5 Arrival detection means 6 Imaging area setting means 7 Operation input means 31 Display monitor 32 Abnormal return button switch 33 Machine stop button switch 34 Setting / operation switch 100a, 100b , 100c Walnut book 101 Collating machine 102 Binder 103 Cover feeder 104 Lay down conveyor 105 Glue detection position 106 Defective product discharge means 107 Three-way cutting machine 201 Vibrator part 202 Milling part 203 Sanding part 204 Roughening part 205 Brushing part 206 Back glue part 207 Horizontal glue attaching unit 208 Cover sheet feeder 209 Cover sheet walnut tuning unit 210 Press unit 211 Binder outlet 212 Laydown unit 301 A / D conversion unit 302 Image storage unit 303 Designated color region extraction unit 304 Designated color area number counting means 305 Reference designated color area number storage means 306 Inspection target designated color area number storage means 307 Pass / fail judgment means 308 Stop signal output means

Claims (7)

An image pickup means for picking up an image of the cover of the walnut book after the cover is made into a walnut book in the wireless binding machine ;
A color area calculation means for calculating the area of a predetermined color in the predetermined determination area of the captured image obtained by the imaging means,
Determining means for determining the suitability of the orientation of the cover of the walnut book based on the area calculated by the color area calculating means ;
Guru detecting apparatus comprising: a. An imaging unit that images the cover of the walnut book and outputs an imaging signal after forming the cover as a walnut book in the wireless binding machine;
Illuminating means for illuminating the imaging area of the imaging means;
A / D conversion (analog-to-digital converting) means for inputting the imaging signal and converting it into digital data to obtain a captured image;
Determination area setting means for setting a determination area in the captured image;
Designated color setting means for setting a designated color from among display colors in the determination area;
A designated color area extracting means for extracting a designated color area from the determination area based on the designated color;
A designated color area number counting means for counting the number of pixels of the designated color area and outputting the designated color area number;
The number of reference designated color areas, which is the number of designated color areas of the cover used as a judgment reference, is compared with the number of inspection target designated color areas, which is the number of designated color areas of the cover used as a judgment target, to determine whether the orientation of the cover is correct. Pass / fail judgment means for performing judgment output;
A guru detection device comprising:   3. The gluing detection device according to claim 2, wherein the walnut book is carried on a belt conveyor and has arrival detection means for detecting that the walnut book has reached a predetermined position and outputting an arrival signal. The gluing detection apparatus, wherein the imaging unit performs the imaging in synchronization with the arrival signal.   4. The gull detection device according to claim 2, further comprising an imaging region setting unit that sets the imaging region in which the illumination unit illuminates and the imaging unit captures an image.   5. The glu detection device according to claim 2, further comprising: defective product classification discharge means for inputting the quality determination output and discharging the walnut book determined to be defective from the non-defective product. Guru detection device.   6. The guru detection device according to claim 2, further comprising alarm output means for inputting an output for determining whether the product is good or bad and outputting an alarm when the determination is a defective product.   7. The gluing detection device according to claim 2, wherein a stop signal is output to stop the operation of the wireless binding machine when the quality determination output is input and defective product determination continues for a predetermined number of times. A guru detection device comprising a signal output means.

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