JP2013086360A - Gluing inspecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gluing inspecting device inspecting whether gluing is performed all over a predetermined area of an object when performing gluing on an object with a device such as a wireless binding machine.SOLUTION: The gluing inspecting device 1 includes a sensor camera 11 with a photographing range 110 set to cover a gluing area of the object (printed matter 2), executes a process of detecting glue from the photographed image of the gluing area photographed by the sensor camera 11, and when the area where glue is detected satisfies an inspection criteria frame 111 set in the sensor camera 11, determines that the gluing passes the gluing inspection.

Description

  The present invention relates to a technique for inspecting the state of a portion glued by a device such as a wireless binding machine.

  When pasting with glue, such as in the bookbinding process, if the object (for example, printed matter) is not properly glued, poor quality occurs in the finished product (for example, printed matter). It is necessary to inspect the pasting state after applying the paste.

  FIG. 7 is a diagram for explaining a bookbinding process by the wireless binding machine. When bookbinding is performed by the wireless binding machine, first, the printed material 35 is clamped by the clamper 30 so that the back is facing downward (FIG. 7A), and then the back of the printed material 35 is backed by the back glue roller 31. Glue back glue (Fig. 7 (b)), and then glue the side glue on the back side of the printed material 35 with the horizontal glue roller 32 (Fig. 7 (c)), and then cover the cover 33. After being pasted on the back of 35 (FIG. 7 (d)), the booklet which is the printed matter 35 with the cover attached is manufactured by pressing the side glued with the nipper 34 from the left and right (FIG. 7 (e)). (FIG. 7F).

  As described above, in the bookbinding process by the perfect binding machine, the back glue roller 31 and the horizontal glue roller 32 are used to glue the printed matter 35. However, if the back glue roller 31 and the horizontal glue roller 32 are not properly glued, the cover is immediately removed. Therefore, it is necessary to inspect the pasting state after pasting with the back glue roller 31 and the horizontal glue roller 32.

  As inventions for inspecting the gluing state, Patent Documents 1 and 2 disclose an invention for inspecting the gluing state using a radiation temperature sensor, and Patent Document 3 discloses an invention for inspecting a gluing state using a laser beam. However, these inventions are simply inventions for inspecting glued pieces, and it has not been possible to inspect whether or not all predetermined areas are glued.

  For example, when bookbinding is performed by the above-described perfect binding machine, the cover is pasted after being glued by the back glue roller 31 or the transverse glue roller 32. After the cover is pasted, the booklet can be seen for the top and bottom sides. If it is glued, it can be visually inspected, but the central part of the back cannot be inspected for glue. In paragraph 0029 of Patent Document 2, there is a description of an example in which a paste application portion and a non-application portion are periodically repeated, but there is no description about a case where a non-application portion occurs once.

No. 3132863 Publication JP 2010-137421 A

  In view of the above-described problems, the present invention provides a gluing inspection device capable of inspecting whether a predetermined region of an object is glued when the object is glued by an apparatus such as a wireless binding machine. Objective.

  The first invention for solving the above-described problem is to perform processing for detecting glue from a sensor camera in which a photographing range on a line is set so as to include a pasting region of an object, and a photographed image of the sensor camera, In the gluing inspection apparatus, a gluing inspection unit is provided that determines that the gluing inspection is passed when an area where the gluing is detected satisfies an inspection reference frame set in the sensor camera.

  Further, the second invention is the gluing inspection apparatus according to the first invention, further comprising an optical mark reader that recognizes an optical mark added to an object and reads an identification number encoded in the optical code, Prior to the process of detecting glue, the gluing inspection means operates the optical mark reader to read the identification number, and determines that the gluing inspection has failed, stores the identification number read by the optical mark reader. It is characterized by doing.

  Furthermore, a third invention is the gluing inspection device according to the first or second invention, wherein an operator sets the gluing inspection frame within the photographing range, and the gluing inspection frame within the photographing range is provided. An inspection frame setting means for storing the position and size is provided.

  According to the above invention, the imaging range of the sensor camera connected to the gluing inspection device is set so as to include the gluing area of the object, and the gluing inspection frame for detecting glue is within the imaging range of the sensor camera. Therefore, if the gluing inspection frame is set so that it becomes an area that requires gluing inspection on the target object, the gluing inspection means of the gluing inspection apparatus determines the area where the gluing is detected and the gluing inspection frame. By confirming whether or not they match, it is possible to inspect whether or not the target object has been glued to all areas that need to be glued when glued to the object by a device such as a wireless binding machine.

The figure explaining the structure of the gluing test | inspection apparatus which concerns on this embodiment. The figure explaining the function with which the pasting inspection apparatus concerning this embodiment was equipped. The flowchart explaining the operation | movement which a gluing test | inspection apparatus test | inspects a gluing defect. The figure explaining the picked-up image of the sensor camera connected to the gluing test | inspection apparatus. The figure explaining the case where a gluing inspection passes. The figure explaining the case where a glue test | inspection fails. 10A and 10B illustrate a bookbinding process by a wireless binding machine.

  Now, preferred embodiments of the present invention will be described in detail with reference to the drawings. The embodiment described below is only one embodiment of the present invention, and the present invention is not limited to the embodiment described below, and various modifications and changes are possible.

  FIG. 1 is a diagram for explaining the configuration of a gluing inspection apparatus 1 according to the present embodiment. The gluing inspection apparatus 1 according to the present embodiment includes three sensor cameras 11 (11a to 11c) in which a shooting range 112 on a line is set so as to include a gluing region of an object (here, printed matter 2). , An optical mark reader 16 that recognizes an optical mark 16a (bar code or OCR character) encoded with an identification number for identifying the printed matter 2 and reads the identification number from the optical mark 16a, and a sensor 17 that detects the printed matter 2 ( Photoelectric sensor and the like, and a control device 10 that analyzes a photographed image 110 of the sensor camera 11 and inspects a glue failure of the printed matter 2, and the glue inspection device 1 is photographed by the sensor cameras 11 (11a to 11c). When the glue region detected from the image 110 satisfies the inspection reference frame 111 set for each sensor camera 11 (11a to 11c), the glue test is performed. It is determined to have passed the.

  In the present embodiment, the sensor camera 11 of the gluing inspection apparatus 1 is a line sensor and is connected to the gluing inspection apparatus 1 so that the gluing inspection apparatus 1 can be installed on the conveyance path of the glue binding machine after gluing. The imaging range 112 of the first sensor camera 11 (11a) includes a pasting area of the back paste 20 of the printed product 2 clamped by the clamper 3 so that the back glue paste glued by the back glue roller can be inspected. In addition, the imaging range 112 of the second sensor camera 11 (11b) is set so that the horizontal glue 21 on the surface of the printed material 2 can be inspected for defective glue of the horizontal glue glued by the horizontal glue roller. In addition, the imaging range 112 of the third sensor camera 11 (11c) is set so as to include a gluing area, and inspects a gluing defect of the horizontal gluing glued by the horizontal gluing roller. In order to be able, is set to include gluing area of the lateral glue on the back surface of the printed material 2, the position of each of the imaging range 112 on the conveying path of the clamper -3 are identical.

  In this way, by setting the photographing range 112 of each of the sensor cameras 11a to 11c connected to the glue inspection apparatus 1, the glue inspection apparatus 1 according to the present embodiment can photograph the back of the glued printed matter 2. The image 110, and the photographed image 110 on the back side of the front and back surfaces are acquired, and the glue inspection apparatus 1 analyzes each photographed image 110, whereby the back glue 20 applied to the back of the printed matter 2, and Inspect for poor pasting in each of the horizontal glues 21 applied to the front and back surfaces of the printed matter 2.

  Note that if the sensor camera 11 provided in the gluing inspection apparatus 1 is a line sensor, the timing for starting and ending the shooting varies depending on the length of the printed material 2 in the vertical direction. A detection sensor for detecting the printed matter 2 is arranged upstream of the imaging range 112 of the sensor camera 11 so that a signal to be referred to when finishing is obtained on the gluing inspection apparatus 1 side.

  In the present embodiment, the detection signal of the sensor camera 11 is delayed by a time determined from the distance between the detection position of the detection sensor 17 and the position of the imaging range 112 of the sensor camera 11 and the transport speed of the clamper-3, and the detection signal of the sensor camera 11 is pasted. 1, the gluing inspection apparatus 1 operates the sensor camera 11 (11 a to 11 c) while the detection signal of the sensor camera 11 is detecting the printed material 2.

  In addition, the optical mark reader 16 that reads the identification number from the optical mark 16a is provided in the gluing inspection apparatus 1 so that the log of the printed matter 2 in which the gluing failure has occurred can be stored on the gluing inspection apparatus 1 side. In this embodiment, the gluing inspection 1 stores the time for operating the optical mark reader 16 after the detection signal of the sensor camera 11 is in the ON state in which the printed matter 2 is detected.

  FIG. 2 is a diagram for explaining functions provided in the gluing inspection apparatus 1 according to the present embodiment. The control device 10 of the gluing inspection device 1 according to the present embodiment is a device in which a CPU and a DSP (DSP: Digital Signal Processor) specialized for image processing functions are mounted. A process for detecting glue from the photographed image 110 of the sensor camera 11 is performed, and when the area where the glue is detected satisfies the inspection reference frame, the glue inspection means 14 that determines that the glue inspection has passed and an arbitrary inspection reference frame are set. A reference frame setting means 15 is provided.

  FIG. 3 is a flowchart for explaining the operation of the gluing inspection apparatus 1 for inspecting a gluing failure. When the detection signal of the sensor 17 input to the glue inspection apparatus 1 is turned on (S1), the glue inspection means 14 of the glue inspection apparatus 1 is connected to the glue inspection apparatus 1 while the detection signal is on. All the sensor cameras 11 (11a to 11c) are operated to perform photographing (S2), and when the time for operating the optical mark reader 16 elapses after the detection signal of the sensor camera 11 is turned on, the glue inspection apparatus 1 glue inspection means 14 operates the optical mark reader 16 connected to the glue inspection apparatus 1 to acquire the identification code printed on the printed matter 2 (S3), and then the glue inspection of the glue inspection apparatus 1 The means 14 executes a loop process L1 for each sensor camera 11 (11a to 11c). In this loop process L1, the captured image 110 of the sensor camera 11 is displayed. Luo glue detects if the area detected glue meets the test reference frame, executes the determining gluing inspection process to have passed the glue inspection (S4).

  As described above, the gluing inspection apparatus 1 according to the present embodiment has poor gluing for each of the back glue 20 glued to the back of the printed matter 2 and the horizontal glue 21 glued to the back side of the front and back surfaces. Although the basic principle of the process for the gluing inspection unit 14 of the gluing inspection device 1 to inspect one gluing failure is the same, the gluing inspection of the back glue 20 glued to the back of the printed matter 2 is performed from here. Let's take an example.

  FIG. 4 is a diagram for explaining a photographed image 110 of the sensor camera 11 (11a) connected to the glue inspection apparatus 1. As shown in FIG. 4, in this embodiment, the imaging range 112 on the line of the sensor camera 11 (11 a) that captures the back of the printed material 2 is set so as to include the glued area of the back of the printed material 2. In the inspection apparatus 1, an inspection reference frame 111 corresponding to the sensor camera 11 (11 a) that captures the back of the printed material 2 after gluing is set in advance.

  In FIG. 4, the inspection reference frame 111 has a rectangular shape, and the vertical length of the inspection reference frame 111 is a length C obtained by subtracting the lengths A and B from the vertical length D of the printed material 2. By setting the length in the direction to the length G obtained by subtracting the lengths E and F from the length H in the width direction of the printed matter 2, the area for inspecting the gluing failure is the back where the gluing failure cannot be inspected visually. It is set at the center.

  FIG. 5 is a diagram for explaining a case where the gluing inspection of the back glue 20 is passed. In this embodiment, the gluing inspection means 14 of the gluing inspection apparatus 1 detects the glue (back glue 20) from the photographed image 110 of the sensor camera 11 (11a), and the area where the glue (back glue 20) is detected is a sensor camera. When the inspection reference frame 111 of 11 (11a) is satisfied, it is determined that the paste inspection of the back paste 20 has been passed. Therefore, as shown in FIG. ) Is detected, it is determined that the inspection result of the pasting failure is acceptable. As shown in FIG. 5B, even if glue (back glue 20) sticks out from the rectangular inspection reference frame 111, glue (back glue 20) is applied from all inside the inspection reference frame 111. If it can be detected, it is determined that the gluing inspection of the back paste 20 has been passed.

  FIG. 6 is a diagram for explaining a case where the gluing inspection of the back glue 20 fails. In this embodiment, the gluing inspection means 14 of the gluing inspection apparatus 1 detects glue (back glue 20) from the photographed image 110 of the sensor camera 11 (11a), and the area where the glue (back glue 20) is detected is the inspection standard. When the frame 111 is satisfied, it is determined that the gluing inspection of the back glue 20 has been passed. For example, as shown in FIG. 6A, glue (back glue 20) is attached to the ground side of the inspection reference frame 111. When there is no glue, no glue (back glue 20) is attached to the top / bottom side of the inspection reference frame 111 as shown in FIG. 6B, or on the right side of the inspection reference frame 111 as shown in FIG. 6C. When the inspection reference frame 111 is not satisfied, such as when no glue (back glue 20) is attached, the inspection result of the pasting failure of the back glue 20 is determined to be unacceptable.

  Note that the processing method for detecting glue depends on the sensor camera 11 of the glue used in manufacturing and the glue inspection apparatus 1. For example, when a hot-melt adhesive is used in manufacturing, the sensor camera 11 of the gluing inspection apparatus 1 is an infrared camera, and the photographed image 110 photographed by the infrared camera is a temperature image. By extracting a region where the temperature is equal to or higher than the threshold, glue can be detected.

  Returning to the description of FIG. When the loop process L1 is completed, the gluing inspection means 14 of the gluing inspection apparatus 1 confirms whether or not the gluing inspection has passed in all the gluing inspection processes (S4) (S5), and if even one gluing inspection has failed. Then, the identification code read in S3 of FIG. 3 is stored as a log indicating that a gluing failure has occurred, and this procedure ends (S6).

  Next, the reference frame setting means 14 of the glue inspection apparatus 1 will be described. As shown in FIG. 4, when the inspection reference frame 111 has a rectangular shape, the reference frame setting unit 14 of the gluing inspection apparatus 1 sets the length and width of the rectangular top and bottom method to the operator for each sensor camera 11. It becomes a means to make it input. The inspection reference frame 111 is not limited to a rectangle, and the inspection frame setting means 14 of the gluing inspection apparatus 1 is a means for determining the size of the inspection reference frame 111 according to the shape of the inspection reference frame 111.

  Thus, according to the gluing inspection apparatus 1 of the present embodiment, the imaging range 112 of the sensor camera 11 (11a to 11c) connected to the gluing inspection apparatus 1 is set so as to include the gluing area of the printed matter 2. In the gluing inspection apparatus 1, since the inspection reference frame 111 is set for each sensor camera 11 (11a to 11c), the reference frame setting means 14 or the like is used to make an area in the printed material 2 that requires gluing inspection. If the inspection reference frame 111 is set, the glue inspection means 14 of the glue inspection apparatus 1 confirms whether the area where the glue can be detected satisfies the inspection reference frame 111, so that an inspection of glue is necessary for the printed matter 2. It becomes possible to inspect whether the entire area is glued.

  Further, like the gluing inspection apparatus 1 of the present embodiment, the optical mark reader 16 that recognizes the optical mark 16a added to the printed matter and reads the identification number encoded in the optical code 16a is provided, and the gluing inspection means 14 includes: Before the gluing inspection process (S4) in FIG. 3, the optical mark reader 16 is operated to read the identification number, and if it is determined that the gluing inspection has failed, the identification number read by the optical mark reader 16 is stored. Thus, it becomes possible to leave a log of the printed material 2 that has failed the gluing inspection.

DESCRIPTION OF SYMBOLS 1 Glue inspection apparatus 11 Sensor camera 110 Image | photographing range 111 Glue inspection frame 14 Glue inspection means 15 Inspection frame setting means 2 Printed matter 20 Back glue 21 Horizontal glue

Claims (3)

  A sensor camera in which the shooting range on the line is set so as to include the glued area of the object, and processing for detecting glue from the shot image of the sensor camera is performed, and the area where glue is detected is set in the sensor camera. A gluing inspection apparatus comprising gluing inspection means for determining that the gluing inspection is passed when the inspection reference frame is satisfied.   An optical mark reader for recognizing an optical mark added to an object and reading an identification number encoded in the optical code is provided, and the gluing inspection means operates the optical mark reader before processing for detecting glue. The gluing inspection apparatus according to claim 1, wherein when the identification number is read and it is determined that the gluing inspection is failed, the identification number read by the optical mark reader is stored. 2. The inspection frame setting means for allowing an operator to set the gluing inspection frame within the imaging range and storing the position and size of the gluing inspection frame within the imaging range. 2. The gluing inspection apparatus described in 2.