JP5560731B2 - Drainage inspection apparatus and method - Google Patents

Description

  The present invention relates to a technique for inspecting a defective punching generated during blanking for punching a base material.

  When performing blank processing to manufacture blanks with punched holes using a punching machine, punching defects that cannot be completely removed from the punching holes due to uneven pressurization of the punching machine or wear of the die cutting blade In some cases, it is necessary to inspect all the blanks manufactured by blank processing for defective chips.

  For example, in the manufacturing process of an envelope with a window, since a blanking process for manufacturing a blank having a shape in which an envelope with a window is developed, a film pasting process is performed in which a transparent film is applied to a punched hole formed in the blank. When a punching defect occurs, a film is stuck with the punching scrap sandwiched, and the basic function of the envelope with a window that allows the other side of the punching hole to be seen is impaired.

  As an invention for inspecting an unsuccessful chip residue, an invention in which a blank manufactured by blank processing using a CCD camera is photographed in Patent Document 1 and inspected for an unsucked defect by comparing with a reference image of the blank is disclosed. Although disclosed, if existing equipment such as a punching machine has a complicated structure, there are cases where a CCD camera for photographing a blank cannot be installed in the existing equipment.

  As a method for inspecting defective punches without using a CCD camera, it is conceivable to detect punched scraps using a general reflective sensor, but a film or glassine paper is stuck on the punched holes formed in the blank. If this is the case, it will be difficult to detect scraps due to the reflected light from the film or glassine paper.

  In addition, if the blank paper is a paper material such as an envelope with a window, it is possible to use a photoelectric sensor consisting of a projector and a light receiver to detect the presence or absence of light extraction from the attenuation of light due to the overlap of paper. However, if a pattern is printed on the base material, it is difficult to determine whether a detected dregs is detected or a black ink pattern printed on the base material is detected.

JP 2009-244058 A

In view of such a problem, the present invention can be applied to a case where a pattern is printed on a blank manufactured by blank processing or a case where a film or the like is pasted on a punched hole formed on a blank. It is an object of the present invention to provide an apparatus capable of inspecting a defective defective using a reflection type sensor.

According to a first invention for solving the above-mentioned problem, a plurality of the inventions are installed in a direction perpendicular to the conveying direction of the blank in accordance with a passing position of a punching hole which is formed in a blank of an envelope with a window and becomes a window of the envelope with a window . A color sensor that outputs a predetermined signal when the degree of coincidence between the color of the detected object and the registered color is within an allowable value, and a color plate that is installed to face the color sensor and has the same color as the registered color of the color sensor And a rotary encoder connected to the roller for conveying the blank, and the number of pulses output by the rotary encoder while the color sensor outputs the signal, thereby counting the color sensor and the color plate. The time when the color sensor outputs the signal when the blank passes through is measured, and the length of the punched hole in the moving direction is measured. If Flip measurement time than a preset time is short, the process of determining the dregs vent to the punching hole is attached, with a testing means for performing on the basis of each of the signal of the color sensor This is a punch inspection apparatus characterized by the above.

As will be described later, according to the present invention described above, when a pattern is printed on a blank manufactured by blank processing or when a film or the like is pasted on a punched hole formed in the blank. Even in such a case, it is possible to provide a device that can inspect for defective picking using a reflective sensor.

FIG. 3 is a view for explaining a punched residue inspection apparatus. The figure explaining the blank of the envelope with a window. FIG. 6 is a diagram for explaining a defective dregging. The figure explaining the principle which a removal duck inspection apparatus inspects a dregs dregs. The figure explaining time for a color sensor to output an ON signal. The figure explaining the application example 1 of this invention. The figure explaining the application example 2 of this invention.

  From here, embodiments of the present invention will be described to the extent that those skilled in the art of the present invention can understand the contents of the present invention and implement the present invention.

  FIG. 1 is a diagram for explaining a scrap inspection apparatus 1. In FIG. 1, a punching residue inspection apparatus 1 is installed for inspecting a punching defect occurring in a blank 2 of an envelope with a window.

  In the manufacturing process of an envelope with a window, blank processing for manufacturing a blank 2 of an envelope with a window in which a punching hole 20 serving as a window is formed by punching paper into a shape in which the envelope with a window is developed, and a transparent film or glassine A film pasting process for pasting paper into the punching hole 20 of the blank 2 of the envelope with window and a bag making process for pasting predetermined sides of the blank 2 of the envelope with window are performed.

  FIG. 2 is a diagram illustrating a blank 2 of an envelope with a window. FIG. 2A is an example of the surface of the blank 2 of the envelope with window. In FIG. 2A, a colored border 21 is printed around the punched hole 20 formed in the blank 2 of the window envelope. Yes. FIG. 2B is an example of the back surface of the blank 2 of the envelope with window. In FIG. 2B, a film or glassine paper is used so as to cover the punching hole 20 formed in the blank 2 of the envelope with window. A protective paper 22 is affixed.

  FIG. 3 is a diagram for explaining a defective punching generated in the blank 2 of the envelope with a window. When the punching hole 20 that becomes the window of the envelope with the window is punched, a punching defect in which the punching residue 23 remains in the punching hole 20 rarely occurs. If the bag is processed, a part or all of the contents (for example, the address) printed on the sealed material enclosed in the envelope with the window by the punched residue 23 remaining in the punching hole 20 that becomes the window of the envelope with the window Therefore, it is necessary to inspect all the blanks 2 of the envelope with window for the presence of the scrap 23 before the bag making process.

  1 is an apparatus installed on a manufacturing line for envelopes with a window in order to inspect defective punches, and the degree of coincidence between the color of a detected object and a registered color is within an allowable value. Rotation of a color sensor 10 that outputs an ON signal, an amplifier 10a that amplifies the output of the color sensor 10, a color plate 11 of the same color as the registered color of the color sensor 10, and a roller 3 that conveys a blank 2 of an envelope with a window And a control device 12 (for example, a programmable controller) that functions as a means for inspecting the extracted scraps by inputting a signal of the color sensor 10 amplified by the amplifier 10a and a pulse of the rotary encoder 13, and At least.

  FIG. 4 is a diagram for explaining the principle by which the punching residue inspection apparatus 1 inspects the punching residue. As shown in FIG. 4, in this embodiment, a color that is not used for a blank of an envelope with a window and a printed pattern (for example, the border 21) is registered in the color sensor 10 as a registered color, and the color A color plate 11 having the same color as that registered in the sensor 10 is arranged so as to face the color sensor 10 in accordance with the detection angle of the color sensor 10, and the output signal of the color sensor 10 and the pulse of the rotary encoder 13 are transmitted to the control device 12. The control device 12 counts the number of pulses output by the rotary encoder 13 while the color sensor 10 outputs the ON signal as the time when the color sensor 10 outputs the ON signal. Then, inspect the presence or absence of dregs.

  FIG. 5 is a diagram for explaining the time for the color sensor 10 to output the ON signal, and FIG. 5 (a) is a diagram for explaining the time for the color sensor 10 to output the ON signal in the absence of the removal residue 23. FIG. 4B is a diagram for explaining the time during which the color sensor 10 outputs the ON signal in the state where the punching residue 23 is present.

  As shown in FIG. 5A, when there is no punching residue 23, the position where the color sensor 10 can detect the color plate 11 is the entire region of the punching hole 20 provided in the blank 2 of the envelope with window. When the blank 2 of the envelope with window is conveyed, the time for the punching hole 20 to pass through the field of view of the color sensor 10 is the time t0 for the color sensor 10 to output an ON signal.

  Further, as illustrated in FIG. 5B, when the punched residue 23 is present, the position where the color sensor 10 can detect the color plate 11 is an area of the punching hole 20 that is not covered with the punched residue 23. The time for the region of the punching hole 20 not covered by the punching residue 23 to pass through the field of view of the color sensor 10 is the time t1 when the color sensor 10 outputs the ON signal. This time t1 is the time when the punching residue 23 is not present. It becomes shorter than time t0.

  According to the length of the punching hole 20 provided in the blank 2 of the envelope with a window to be inspected for punching, the control device 12 has a specified time (in this case, a pulse for determining that there is no punching waste 23). The control device 12 compares the set time with the measurement time (here, the number of pulses) measured when the blank 2 of the envelope with window is pulled and inspected, and the measurement time is shorter than the set time. In this case, it is determined that there is a dregs 23.

  It should be noted that, in the extracted residue inspection apparatus 1 according to the present invention, a color sensor that outputs an ON signal when the degree of coincidence between the color of the detected object and the registered color is within an allowable value as a reflective sensor used for the removed residue inspection. 2 is used when a protective paper 22 such as a film or glassine paper is attached to the punched hole 20 formed in the blank 2 of the envelope with window as shown in FIG. This is because, as shown in FIG. 5A, even when the border 21 is printed around the blank 2 of the envelope with window, it is possible to inspect the defective scrap using the reflective sensor.

  Since the commercially available color sensor 10 is generally provided with a function capable of adjusting the permissible range of the registered color, even when the protective paper 22 such as a transparent film or glassine paper is attached to the punched hole 20. If the color sensor 10 is adjusted so that an ON signal is output when the color of the color plate 11 is detected, a protective paper 22 such as a transparent film or glassine paper is pasted into the punched hole 20. In addition, it is possible to determine the presence / absence of the punched residue 23.

  Further, since the color sensor 10 outputs an ON signal when the degree of coincidence between the color of the detected object and the registered color is within an allowable value, colors other than the blank 2 of the envelope with window and the color of the picture (for example, the border 21) are output. If registered in the color sensor 10 as a registered color, the influence of the color of the blank 2 of the envelope with window and the color of the picture (for example, the border 21) can be eliminated and the scrap 23 can be inspected.

  Further, the field of view of the commercially available color sensor 10 is relatively narrow, about 3 mm in diameter, and the size (for example, 30 mm × 30 mm × 4 mm) of the color plate 11 detected by the color sensor 10 can be small. Thus, it can be installed between the rollers 2 of the existing equipment, and the cost can be reduced compared with the case where a CCD camera is used.

  The embodiments described so far have only described the basic principle of the present invention, and can be applied to various application examples.

  FIG. 6 is a diagram for explaining an application example 1 of the present invention. The application example 1 of the present invention is an application example in which a sensor 114 for detecting a blank 2 of an envelope with a window is provided. The apparatus 100 includes a color sensor 110 that outputs an ON signal when the degree of coincidence between the color of the detected object and the registered color is within an allowable value, an amplifier 110a that amplifies the output of the color sensor 110, and a registered color of the color sensor 110. The color plate 111 of the same color, the rotary encoder 113 that generates a pulse according to the rotation of the roller 3 that conveys the blank 2 of the envelope with window, the sensor 114 that detects the blank 2 of the envelope with window, and the amplifier 110a A control functioning as a means for inspecting the punch 23 by receiving the signal of the color sensor 110, the pulse of the rotary encoder 13, and the signal of the sensor 114. Vessel 112 (e.g., a programmable controller) at least constituted from a. In FIG. 6, the same reference numerals as those in FIG.

  In the manufacturing process of the envelope with window, the blank 2 of the envelope with window is intermittently fed. Between the blank 2 of the envelope with window, there is no obstacle between the color sensor 110 and the color plate 111. In this case, the color sensor 110 may detect the color of the color plate 111, and the control device 112 may erroneously detect the removal residue 23.

  Therefore, as illustrated in FIG. 6, a sensor 114 (for example, a photoelectric sensor) that detects the blank 2 of the envelope with a window that is intermittently fed is provided, and based on the signal that the sensor 114 detects the blank 2 of the envelope with a window, The control device 112 is provided with a function of generating a gate signal in accordance with the timing at which the punching hole 20 formed in the blank 2 of the envelope with the window crosses the visual field of the color sensor 110. It is preferable to count the number of pulses output by the rotary encoder 113 while the output of the color sensor 110 is the ON signal as the time when the ON signal is output.

  FIG. 7 is a diagram for explaining an application example 2 of the present invention. The application example 2 of the present invention is an application example in which a plurality of color sensors are provided. The punched-out inspection apparatus 200 shown in FIG. Two color sensors 210 that output an ON signal when the degree of coincidence between the color sensor and the registered color is within an allowable value, an amplifier 210a that amplifies the output of the color sensor 210, and a color plate 211 of the same color as the registered color of the color sensor 210 The rotary encoder 213 that generates a pulse according to the rotation of the roller 3 that conveys the blank 2 of the envelope with window, the signal of the color sensor 210 amplified by the amplifier 210a and the pulse of the rotary encoder 213 are input, It is comprised at least from the control apparatus 212 (for example, programmable controller) which functions as a means to test | inspect. In FIG. 7, the same reference numerals as those in FIG.

  In FIG. 7, only one color sensor is used. However, depending on the situation in which the punch 23 is attached to the punching hole 20, the single scrap cannot be detected by one color sensor, that is, the punch has passed through the field of view of the color sensor. In such a case, in the scrap inspection apparatus 200 shown in FIG. 7, a plurality of color sensors 210 are arranged in a direction perpendicular to the conveyance direction of the blank 2 of the envelope with window, and the control device 212 Based on the ON signal of the color sensor 212, the presence or absence of scraps is inspected.

1,100,200 Scrap inspection device 10,110,210 Color sensor 11,111,211 Color pallet 12,112,212 Control device 13,113,213 Rotary encoder 2 Blank of envelope with window 20 Punching hole 21 Edge 22 Protection Paper

Claims (1)

In accordance with the passing position of the punching hole that is formed in the blank of the envelope with a window and becomes the window of the envelope with a window , a plurality of them are installed in a direction perpendicular to the conveyance direction of the blank, and the degree of coincidence between the color of the detected object and the registered color is A color sensor that outputs a predetermined signal when it is within the allowable value, a color sensor that is installed to face the color sensor, and connected to a color plate that is the same color as the registered color of the color sensor, and a roller that transports the blank By counting the number of pulses output by the rotary encoder while the rotary encoder and the color sensor output the signal, the color sensor when the blank passes between the color sensor and the color plate. Measures the time when the signal is output, and measures the time longer than the preset time according to the length of the punched hole in the moving direction. If the time is short, the punched and determining processing hole in the scrap is attached, scrap inspection apparatus comprising the inspection means for performing, based on each of the signal of the color sensor.

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