JP5236090B2 - Sheet-like object identification method and identification apparatus - Google Patents

Description

  The present invention relates to a sheet-like object identification method and an identification apparatus for inspecting a sheet-like object on which a plurality of patterns are printed by a quality inspection apparatus and discriminating between a good product and a defective product.

  In general, this kind of sheet-like material identification method inspects a printed sheet-like material by a quality inspection device provided between a printing unit and a paper discharge unit, and determines that a sheet is a defective sheet. It was discharged into a pile for defective sheets provided in the section, and was separated from a non-defective sheet material discharged into a pile for good products.

  In the conventional sheet-like material identification method described above, even if one of a plurality of patterns has a printing defect and the remaining pattern is a non-defective product, it is regarded as a printing defect and is discharged to a defective sheet pile and discarded. Was. Therefore, there is a problem that the waste of the sheet-like material increases, and the cost for printing increases due to the waste of the expensive sheet-like material used for, for example, securities. Further, in the case where an abnormality detection device for detecting a supply abnormality such as a registration error of a sheet-like material is provided in the printing press, the sheet-like material in which an abnormality is detected by this abnormality detection device is not printed at all. Nevertheless, it was considered a printing defect and was discarded. Therefore, in this case, there is a problem that the cost for printing increases.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a sheet-like material identification method and identification apparatus that eliminates waste of sheet-like materials and greatly reduces the cost of printing. There is to do.

To this end, the present invention provides a failure identification mark register assigned to the sheet-like object registration failure is detected by the register sensor for detecting a register defect of the sheet in register unit, sheet Identification for identifying a sheet-like material in which at least one pattern on the sheet-like material is judged to be defective and at least one design on the sheet-like material is judged to be non-defective by a quality inspection device that inspects the print quality of it is intended to impart a mark on the sheet of the corresponding.

The present invention provides a quality inspection apparatus that inspects the print quality of a sheet-like material, a registration sensor that detects a registration failure of the sheet-like material in a register , and at least one pattern on the sheet-like material by the quality inspection device. An identification mark for identifying a sheet-like material that is judged to be defective and at least one pattern on the sheet-like material is identified as a non-defective product is assigned to the corresponding sheet-like material, and a registration failure is detected by the register sensor. And an identification mark applying means for applying a registration defect identification mark to the sheet-like material.

According to the present invention, it is possible to easily identify a sheet-like material in which at least one pattern on the sheet-like material is determined to be defective and at least one pattern on the sheet-like material is determined to be non-defective. with the registration sheet material defect is detected rather Do the child to wasted, it is possible to reduce the cost of printing.

It is a side view which shows the whole 4 color simultaneous printing offset machine which employ | adopted the sheet-like object identification method based on this invention. It is a side view which expands and shows the principal part in the 4-color simultaneous printing offset machine which employ | adopted the sheet-like object identification method which concerns on this invention. It is a block diagram which shows the structure of the 4 color simultaneous printing offset machine which employ | adopted the sheet-like object identification method based on this invention. It is a top view of the paper in the 4 color simultaneous printing offset machine which employ | adopted the sheet-like material identification method based on this invention. It is a flowchart which shows the first half of the identification operation | movement in the 4-color simultaneous printing offset machine which employ | adopted the sheet-like object identification method which concerns on this invention. It is a flowchart which shows the second half of the identification operation | movement in the 4-color simultaneous printing offset machine which employ | adopted the sheet-like object identification method based on this invention. It is a block diagram which shows a structure in the 2nd Embodiment of this invention. It is a top view which shows the detail of the registration part in the 2nd Embodiment of this invention. It is a flowchart for demonstrating the identification operation | movement in the 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[Embodiment 1]

  First, the first embodiment of the present invention will be described with reference to FIGS. In FIG. 1, in a printing unit 1 of a four-color duplex printing machine, a rubber cylinder 2 provided with a paper holding device (not shown) and a rubber cylinder 3 not provided with a paper holding device are in contact with each other at their peripheral surfaces. Thus, it is supported in a substantially horizontal state. Four plate cylinders 4 are arranged on the peripheral surface of the rubber impression cylinder 2, and four plate cylinders 5 are also arranged on the peripheral surface of the rubber cylinder 3. Ink units 6 and 7 that can be moved toward and away from the plate cylinders 4 and 5 are provided so as to be movable. Yes.

  As shown in FIG. 4, a blank portion 10 a on which a pattern is not printed is provided at the peripheral portion of the paper 10, and 32 patterns 10 b on the front and back sides are printed on a portion surrounded by the blank portion 10 a. In FIG. 1, reference numeral 8 denotes a paper feeding unit. A paper 10 fed from the paper feeding unit 8 via a feeder board 9 is aligned in the vertical direction and the horizontal direction in the register unit 11, and is not shown. It is replaced by a paper gripping claw device of the rubber impression cylinder 2 through transfer cylinders 12, 13, 14, 15 provided with the device. The paper 10 on which both sides are printed by the rubber impression cylinder 2 and the rubber cylinder 3 is replaced by a paper gripping claw device (not shown) of the transfer cylinder 16, and the paper discharge cylinder 17 of the printing unit 1 and the paper discharge of the paper discharge unit 19 are discharged. The first paper discharge chain 20 stretched between the cylinder 18 is replaced with a paper discharge claw member (not shown) and conveyed to the paper discharge unit 19.

  As shown in FIG. 2, the paper discharge unit 19 includes a large-diameter first inspection cylinder 22 that contacts the discharge cylinder 18, and a large-diameter second inspection cylinder that contacts the first inspection cylinder 22. 24, and grippers 23 and 25 are provided on the inspection cylinders 22 and 24, respectively. A surface inspection apparatus 26 inspects the quality of the surface of the paper 10 and is provided close to the peripheral surface of the first inspection cylinder 22. Reference numeral 27 denotes a back surface inspection apparatus for inspecting the quality of the back surface of the paper 10 and is provided in the vicinity of the peripheral surface of the second inspection cylinder 24.

  31, 32, 33 are provided with a gripper device (not shown), and three transfer cylinders whose peripheral surfaces are in contact with each other. The transfer cylinder 31 is in contact with the second inspection cylinder 24, and these three transfer cylinders The transfer drums 31, 32, 33 are provided in a zigzag shape in the vertical direction. Reference numeral 35 denotes an ink jet printer as identification providing means, which is provided in the vicinity of the peripheral surface of the transfer cylinder 33, and is provided with a margin 10a (see FIG. 4) of the paper 10 which is conveyed by being held by the gripper device of the transfer cylinder 33. ) Is printed with a barcode 34 as an identification mark. A large number of suction holes are provided on the outer circumferences of the first and second inspection cylinders 22 and 24 and the transfer cylinder 33, and suction devices provided in the cylinders 22, 24 and 33 (all not shown). Thus, air around the suction hole is sucked into the cylinders 22, 24, 33.

  A second paper discharge chain 38 is stretched between the paper discharge drums 36 and 37 provided at the front and the rear of the paper discharge unit 19, and the paper 10 is conveyed along the second paper discharge chain 38. A paper discharge claw member 39 is supported at a constant interval. Reference numeral 40 is a non-defective pile provided below the substantially central portion of the second paper discharge chain 38, and 41 is a failure pile provided below the end portion of the second paper discharge chain 38. A paper discharge cam 43 as a discharge switching means is provided above the non-defective pile 40, and this paper discharge cam 43 is shown by an operating position shown by a solid line and a two-dot chain line in the drawing by a drive means not shown. It is supported so as to be movable to the retracted position.

  When the paper discharge cam 43 is positioned at the operating position, the cam follower (not shown) of the paper discharge claw member 39 that has traveled by the second paper discharge chain 38 engages with the paper discharge cam 43, and the paper discharge claw member 39 is released, and the paper 10 falls onto the non-defective pile 40. On the other hand, when the paper discharge cam 43 is positioned at the retracted position, the cam follower (not shown) of the paper discharge claw member 39 that has traveled does not engage with the paper discharge cam 43, so the paper 10 is discharged from the paper discharge claw member. It is conveyed while being added to 39. Reference numeral 44 denotes a fixed paper discharge cam provided above the failure pile 41, and the cam follower of the paper discharge claw member 39 that has traveled while holding the paper 10 without being engaged with the paper discharge cam 43 is engaged. The grip of the paper discharge claw member 39 is released, and the paper 10 falls onto the failure pile 41.

  In FIG. 3, reference numeral 50 denotes a control device, which prints a barcode 34 as first to fourth identification marks on the ink jet printer 35 based on the inspection results of the front surface inspection device 26 and the back surface inspection device 27. The discharge cam 43 is controlled to move to either the operating position or the retracted position.

  Next, a sheet-like object identifying method in the sheet-like object identifying device having such a configuration will be described with reference to FIGS. 5 and 6. In step S1, the paper 10 fed to the feeder board 9 from the paper feeding unit 8 in FIG. 1 is sequentially conveyed by the four transfer cylinders 11 to 15 and is replaced by the gripping claw device of the rubber impression cylinder 2. In step S 2, the paper 10 that has passed between the rubber impression cylinder 2 and the rubber cylinder 3 and has been printed on both sides is replaced by the discharge claw member of the first discharge chain 20 via the transfer cylinder 16. The paper is transported to the side of the paper discharge drum 18 of the paper discharge unit 19 following the traveling of the single paper discharge chain 20.

  As shown in FIG. 2, the paper 10 that has been replaced from the paper discharge claw member of the first paper discharge chain 20 to the gripping claw device 23 of the first inspection cylinder 22 has a printed state on the front side in step S3. Inspection is performed by the surface inspection device 26, and this inspection information is input to the control device 50. While being inspected by the surface inspection device 26, the paper 10 is not fluttered by being attracted to the peripheral surface of the first inspection cylinder 22 by the suction device provided in the first inspection cylinder 22. Therefore, the surface of the paper 10 is accurately inspected.

  The paper 10 that has been replaced by the gripper device 25 of the second inspection cylinder 24 from the gripper device 23 of the first inspection cylinder 22 is inspected by the back surface inspection device 27 in step S4 for the printed state on the back surface side. The inspection information is input to the control device 50. Even during the inspection by the back surface inspection device 27, the paper 10 does not flutter by being sucked by the peripheral surface of the second inspection cylinder 24 by the suction device provided in the second inspection cylinder 24. Therefore, the back surface of the paper 10 is accurately inspected. The paper 10 that has been replaced by the gripper device of the transfer cylinder 31 from the gripper device 25 of the second inspection cylinder 24 is sequentially transferred from the transfer cylinder 32 to the gripper device of the transfer cylinder 33 and conveyed.

  In step S5, if all 32 patterns 10b of the paper 10 are non-defective due to the inspection results of the front surface inspection device 26 and the back surface inspection device 27, in step S6, the control device 50 causes the inkjet printer to 35, control is performed so that the barcode 34 of the first identification mark is printed on the margin 10a of the paper 10. In this control device 50, the electric signal processing time required to control the inkjet printer 35 to print the barcode 34 of the first identification mark indicating that it is a non-defective product for printing all images is the transfer cylinder 31, 32 is ensured by the time during which the paper 10 is conveyed. Further, since the paper 10 is attracted to the peripheral surface of the transfer cylinder 33 by a suction device (not shown), the barcode 34 can be printed reliably and accurately by the ink jet printer 35. In step S7, the control device 50 performs control to move the discharge cam 43 to the operating position, so that the holding claw device of the transfer drum 33 is replaced by the discharge claw member 39 of the second discharge chain 38. The paper 10 is dropped and stacked on the non-defective pile 40 in step S8 by releasing the grip of the paper discharge claw member 39 by the paper discharge cam 43.

  On the other hand, in step S5, all 32 patterns 10b of the paper 10 are not good, and in step S10, all 32 patterns 10b of the paper 10 are defective, and In step S11, if the front and back sides of the paper 10 are not printed at all, in step S12, the control device 50 uses the inkjet printer 35 to indicate that the paper 10 is a blank paper in the margin 10a of the paper 10. Control is performed to print the barcode 34 of the identification mark. In step S <b> 13, the paper 10 that has been replaced by the paper discharge claw member 39 of the second paper discharge chain 38 from the gripping claw device of the transfer drum 33 by positioning the paper discharge cam 43 at the retracted position is discharged from the paper discharge cam 43. , The holding of the paper discharge claw member 39 is released by the fixed paper discharge cam 44, and in step S14, the paper is dropped and stacked on the failure pile 41.

  In step S11, if the front and back sides of the paper 10 are printed, that is, if all 32 patterns 10b of the paper 10 are printed, all are defective, the control is performed in step S15. In the apparatus 50, the inkjet printer 35 performs control so that the barcode 34 of the second identification mark indicating that all the patterns are defective is printed on the blank portion 10a of the paper 10. In step S <b> 16, the paper 10 that has been replaced by the paper discharge claw member 39 of the second paper discharge chain 38 from the gripping claw device of the transfer drum 33 by positioning the paper discharge cam 43 at the retracted position is discharged from the paper discharge cam 43. , And the holding of the paper discharge claw member 39 is released by the fixed paper discharge cam 44, and in step S17, the paper is dropped and stacked on the failure pile 41.

  In step S10, when all 32 patterns 10b of the paper 10 are not defective, that is, at least one of the 32 patterns 10b of the paper 10 is determined to be defective, and at least one pattern If the design is a non-defective product, in step S18, the control device 50 uses the inkjet printer 35 to display a third identification mark bar indicating that a good product and a defective product are mixed in the margin 10a of the paper 10. Control to print the code 34. In step S <b> 19, the paper 10 that has been replaced by the paper discharge claw member 39 of the second paper discharge chain 38 from the gripping claw device of the transfer drum 33 by positioning the paper discharge cam 43 at the retracted position is discharged from the paper discharge cam 43. , And the holding of the paper discharge claw member 39 is released by the fixed paper discharge cam 44, and in step S20, the paper is dropped and stacked on the failure pile 41.

  In this way, only the non-defective paper 10 is stacked on the non-defective pile 40, and the paper 10 on which at least one of the 32 patterns 10b of the paper 10 is determined to be defective is stacked. Are stacked on the failure pile 41, and the 32 patterns 10b are all sorted out as good. Further, among the papers 10 stacked on the failure pile 41, at least one pattern on which the third identification mark is printed is determined to be defective, and at least one pattern is determined to be non-defective. Can be separated and extracted from other paper 10.

  For this reason, at least one pattern that is a non-defective product is not wasted, so that the cost for printing can be reduced. Further, since the blank paper 10 on which the fourth identification mark is printed and on which no pattern is printed can be extracted, the paper 10 can be supplied to the paper supply unit 8 to be printed again. It is possible to eliminate the waste paper 10 and reduce the printing cost. In addition, since the barcode 34 is printed as the identification mark, the printing speed can be made faster than printing numbers and codes, so that the identification processing speed can be shortened.

In addition, a part of these paper discharge chains may be installed between the first paper discharge chain 20 and the second paper discharge chain 38 in place of the inspection cylinders 22 and 24 and the transfer cylinders 31, 32 and 33. As a result, double-sided quality inspection can be performed in-line between double-sided printing and paper discharge without increasing the installation space and overall machine length. Also, since the suction cylinders are attached to the inspection cylinders 22 and 24 and the transfer cylinder 33, a suction guide or the like is not required, so that the inspection apparatuses 26 and 27 are easily attached and effective in terms of installation space. Further, since the transfer drums 31, 32, 33 are arranged in a zigzag shape in the vertical direction, the inspection devices 26, 27 are easy to attach and effective in terms of installation space.
[Embodiment 2]

  Next, a second embodiment of the present invention will be described with reference to FIGS. In FIG. 7, reference numeral 60 denotes a registration sensor, which is constituted by various registration sensors 60 a to 60 j shown in FIG. 8, detects the state of the paper 10 whose front end is in contact with the front abutment 11 a of the registration unit 11, and has a registration failure. Is detected. That is, in FIG. 8, reference numerals 60a and 60a are left large curvature detection sensors for detecting a state in which the paper 10 is largely bent to the left in the figure. Reference numerals 60b and 60b denote right-side large bend detection sensors for detecting a state in which the paper 10 is bent largely to the right side in the drawing. Reference numeral 60 c denotes a front over sensor that detects a state in which the paper 10 has passed the front pad 11 a in the transport direction A of the paper 10. Reference numeral 60d denotes a two-sheet insertion sensor that detects a state in which the paper 10 is overlapped and fed.

  60e is a left front bending detection sensor that detects a state in which the left front end of the paper 10 is not in contact with the front pad 11a, and 60f is a state in which the right front end of the paper 10 is not in contact with the front pad 11a. This is a right front bending detection sensor. 60 g is a left side bending detection sensor that detects a state in which the left end of the paper 10 is not parallel to the transport direction A of the paper 10, and 60 h is a right side of the paper 10 that is parallel to the transport direction A of the paper 10. It is a right side bend detection sensor that detects a state that is not. Reference numeral 60i denotes a cylinder insertion detection sensor for detecting whether the rubber impression cylinder 2 and the impression cylinder 3 are inserted, and 60j denotes a test sheet sensor for detecting a test sheet.

 In FIG. 7, the control device 50 according to the second embodiment controls the drumming device 61 according to a registration failure signal of the registration sensor 60 as compared with the control device 50 according to the first embodiment described above. Is added. That is, when the registration sensor 60 detects a registration failure of the paper 10 in the registration unit 11, the control device 50 causes the rubber impression cylinder 2 and the rubber cylinder 3 to be connected to each other via the conventionally known drum removal device 61. Control to remove the body.

  Next, a method for identifying a sheet-like object in the second embodiment having such a configuration will be described with reference to FIG. In step S30, the paper 10 fed to the feeder board 9 from the paper feed unit 8 in FIG. 1 is brought into contact with the front pad 11a of the register unit 11, and the paper 10 is aligned in the vertical direction and the horizontal direction. At this time, if a registration failure of the paper 10 is detected by the registration sensor 60 in step S31, the controller 50 in the step S33 removes the cylinder between the rubber impression cylinder 2 and the rubber cylinder 3 via the cylinder removal device 61. Control to perform.

The paper 10 is sequentially conveyed by the four transfer cylinders 12 to 15, and is replaced by a gripping claw device of the rubber impression cylinder 2. The paper 10 passes between the rubber impression cylinder 2 and the rubber cylinder 3, and is transferred to the transfer cylinder. 16 is replaced by a paper discharge claw member of the first paper discharge chain 20, and is conveyed to the paper discharge drum 18 side of the paper discharge unit 19 following the travel of the first paper discharge chain 20. As shown in FIG. 2, the paper 10 that has been replaced from the paper discharge claw member of the first paper discharge chain 20 to the gripping claw device 23 of the first inspection cylinder 22 has a printed state on the front side in step S34. Inspection is performed by the surface inspection device 26, and this inspection information is input to the control device 50. The paper 10 that has been replaced by the gripper device 25 of the second inspection cylinder 24 from the gripper device 23 of the first inspection cylinder 22 is inspected by the back surface inspection device 27 in step S35 for the printed state on the back surface side. The inspection information is input to the control device 50.

  If the control device 50 determines that the paper 10 is detected to be defective by the register sensor 60 in step S36 based on these inspection information, the control device 50 uses the inkjet printer 35 in step S37. Control is performed so that the barcode 34 of the fifth identification mark is printed on the margin 10 a of the paper 10. In step S <b> 38, the paper 10 that has been replaced by the paper discharge claw member 39 of the second paper discharge chain 38 from the gripping claw device of the transfer drum 33 by positioning the paper discharge cam 43 at the retracted position is discharged from the paper discharge cam 43. , And the holding of the paper discharge claw member 39 is released by the fixed paper discharge cam 44, whereby the paper is dropped onto the failure pile 41 and stacked in step S39.

  In this way, by giving the fifth identification mark to the misregistered paper 10, the misregistered paper 10 can be extracted from the other sheets that are dropped on the defect pile 41 and stacked. Accordingly, the cylinders of the rubber impression cylinder 2 and the rubber cylinder 3 are removed due to the registration failure, so that it is possible to perform printing again by supplying the paper 10 with the registration failure that has not been printed to the paper supply unit 8. The misregistered paper 10 is not wasted, and the cost for printing can be reduced.

  On the other hand, in step S31, the paper 10 that has not caused a registration failure is printed on both sides in step S32, and a front surface inspection and a back surface inspection are performed in steps S34 and S35. In step S36, the registration sensor 60 is not defective. Since the determination is made, the barcode 34 of the first to fourth identification marks is printed on the paper 10 as described in the first embodiment.

  Although one non-defective pile 40 is used, but two or more piles are provided, and a discharge cam 43 is provided above each non-defective pile 40. When one pile is full, the discharge cam By switching 43 and discharging to another empty pile, the paper 10 can be discharged continuously without stopping the machine. Although the identification mark is the bar code 34, a different color may be printed on each sheet-like material corresponding to the first to fourth identification marks, or a code number (number, symbol) may be directly printed. In addition, a large number of holes that can be identified by a laser or a punching mechanism may be drilled.

  In addition, although the piles for good products 40 and the piles for failures 41 are separated, they may be separated into five types of piles corresponding to the first to fifth identification marks, or separated by the paper discharge unit 19. Instead, it may be sorted by a method in which papers are once collected in one pile and then the identification marks are identified at another place. In that case, it is more reliable and faster than a method in which a human sees and identifies a bar code. Further, the bar code 34 may be a serial number instead of the first to fifth types of identification marks, and the serial number and the five types of printing states of the paper 10 are associated with each other and managed in the storage device. You can let it go. Moreover, although the paper 10 was demonstrated as a sheet-like thing, film-like sheets, such as a vinyl chloride, may be sufficient.

  2 ... rubber cylinder, 3 ... rubber cylinder, 4, 5 ... plate cylinder, 10 ... paper, 10a ... margin, 10b ... pattern, 11 ... register, 22 ... first inspection cylinder, 24 ... second inspection Cylinder, 26 ... Inspection device for front surface, 27 ... Inspection device for back surface, 35 ... Inkjet printer, 40 ... Pile for good product, 41 ... Pile for failure, 43 ... Discharge cam, 50 ... Control device, 60 ... Register device, 61 ... body removal equipment.

Claims (2)

The registration unit detects a registration failure of the sheet-like material at the registration part. A registration defect identification mark is given to the sheet-like material in which the registration failure is detected, and the sheet-like material is inspected by a quality inspection device that inspects the printing quality of the sheet-like material. An identification mark for identifying a sheet-like object in which at least one pattern on the object is determined to be defective and at least one image on the sheet-like object is determined to be non-defective is attached to the corresponding sheet-like object. A method for identifying a sheet-like material. A quality inspection device for inspecting the print quality of the sheet-like material, a registration sensor for detecting a registration failure of the sheet-like material in the register , and at least one pattern on the sheet-like material is judged to be defective by the quality inspection device. In addition, an identification mark for identifying a sheet-like material in which at least one pattern on the sheet-like material is determined to be non-defective is given to the corresponding sheet-like material, and the sheet-like material in which a registration failure is detected by the register sensor An apparatus for identifying a sheet-like object, comprising: an identification mark applying unit that applies a registration defect identification mark.

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