JP5420944B2 - Sheet-like material transfer device - Google Patents

Description

  The present invention relates to a transport device for a sheet-like material such as printing paper printed by an intaglio printing machine.

  In general, in an intaglio printing press applied to printing of banknotes, securities, etc., when printed by a printing device (printing unit) and discharged to a paper discharge device (paper discharge unit), an inspection unit before delivery, etc. It is well known that printing paper quality is inspected.

  For example, Patent Document 1 discloses a paper transport device having a vacuum type paper guide element and at least one gripper system that holds the paper at the leading edge of the paper, the paper guide element having a paper guide surface. Wherein the paper guide surface of the paper guide element approaches the transport plane of the gripper system with respect to the transport direction, the paper guide surface of the paper guide element along the transport direction has a radius Ra A path of movement of the leading edge of the paper clamped to the gripper system in the transport direction, drawn by an arc, is drawn by an arc of radius Rg, the two arcs intersect at one point, and the paper guide surface There is disclosed a paper transport device in which an inspection system including an optical scanning system or the like is arranged so as to face the screen.

Japanese Patent No. 4057535

  However, in the paper conveying device disclosed in Patent Document 1, the movement locus of the gripper system is located on the arc center (curvature center) side of the vacuum-type fixed paper guide element that is curved in an arc shape. Therefore, in order to make the paper run stably, it is necessary to devise on the paper guide element side to avoid interference with the gripper system (such as a relief structure), which makes the structure complicated and causes an increase in cost. There is a problem.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sheet-like material conveying apparatus that is optimal for quality inspection and the like by causing the sheet-like material to travel stably with a vacuum guide system having a simple structure.

In order to achieve such an object, a sheet-like article conveying apparatus according to the present invention includes:
A sheet-like material holding device that is provided on the endless conveyance body and holds the end of the sheet-like material;
An arc-shaped trajectory portion provided on a part of the movement trajectory of the sheet-like object holding device toward the inside of a loop formed by the movement trajectory;
A rotation guide provided on the center side of the arc of the arc-shaped trajectory portion, which is driven and rotated, has a diameter with a circumferential surface substantially the same curvature as the arc-shaped trajectory portion, and adsorbs a sheet-like object to the peripheral surface. When,
It is provided with.

Also,
The rotation guide body is driven and rotated by a dedicated drive device.

Also,
An adjusting means for adjusting the peripheral speed of the rotating guide body is provided.

Also,
It is characterized by comprising sheet information input means for inputting various information of the sheet-like material, and control means for controlling the drive device based on an input signal from the sheet information input means.

Also,
An inspection device is provided on the opposite side of the arc-shaped locus portion of the arc-shaped locus portion with respect to the arc-shaped locus portion.
Also,
The inspection apparatus includes a plurality of inspection means.

  According to the sheet-like material conveyance device according to the present invention, in the arc-shaped locus portion provided in a part of the movement locus of the sheet-like material holding device, the diameter of the peripheral surface has substantially the same curvature as the arc-shaped locus portion. The sheet-like object can be made to travel stably by the inexpensive rotation guide body having the sheet-like object adsorbed on the peripheral surface thereof.

1 is an overall configuration diagram of an intaglio printing press showing an embodiment of the present invention. It is detail drawing of a test | inspection part. It is a perspective view of a vacuum cylinder. It is a front sectional view of a vacuum cylinder. It is a sectional side view of a vacuum cylinder. It is explanatory drawing of a delivery chain and a gripper device. It is a control block diagram of a drive device. It is explanatory drawing of the other installation pattern of a test | inspection part.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a sheet-like material conveying apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

  1 is an overall configuration diagram of an intaglio printing press showing an embodiment of the present invention, FIG. 2 is a detailed view of an inspection unit, FIG. 3 is a perspective view of a vacuum cylinder, FIG. 4 is a front sectional view of the vacuum cylinder, and FIG. FIG. 6 is a side sectional view of the vacuum cylinder, FIG. 6 is an explanatory diagram of the delivery chain and the gripper device, FIG. 7 is a control block diagram of the driving device, and FIG. 8 is an explanatory diagram of other installation patterns of the inspection unit.

  As shown in FIG. 1, the intaglio printing machine is generally composed of a paper feeding device (sheet-like material supply device) 10, a printing device 20, and a paper discharging device (sheet-like material discharging device) 40.

  The sheet feeding device 10 loaded with paper (sheet-like material) W communicates with a difference plate 11 that receives the paper W sent from the upper layer one by one by the sucker mechanism of the sheet feeding device 10 and aligns the printing register. ing. The difference plate 11 is provided with a swing device 12 that swings in addition to the paper W on the difference plate 11.

  In the printing apparatus 20, a so-called triple cylinder impression cylinder 21 in which three gripping nails are arranged at equal intervals along the circumferential direction and three rubber blankets can be attached to the swing apparatus 12. The cylinder 22 communicates with the cylinder 22, and the impression cylinder 21 is supported by a frame 23. The transfer cylinder 22 is provided with a gripping claw similar to the gripping claw of the impression cylinder 21 so that the paper W replaced by the swing device 12 can be replaced by the gripping claw of the impression cylinder 21. It has become.

  A so-called triple cylinder plate cylinder 24 to which three intaglio plates can be attached along the circumferential direction is in contact with the impression cylinder 21, and the plate cylinder 24 is supported by a frame 23. The intaglio of the plate cylinder 24 is in contact with a so-called quadruple cylinder ink collecting cylinder 25 to which four rubber blankets can be attached along the circumferential direction. The ink collecting cylinder 25 is supported by the frame 26. Has been. The ink collecting cylinder 25 has five so-called single cylinder chablon cylinders 27 in contact with each other in the circumferential direction, each having a circumferential surface length corresponding to the length of the blanket of the impression cylinder 21 and the intaglio of the plate cylinder 24. The chablon body 27 is supported by the frame 26, respectively. Each of these chablon cylinders 27 is in contact with an ink device 28 for supplying ink, and the ink device 28 is supported by a frame 29. The ink devices 28 are filled with inks of different colors.

  In this way, the ink collecting cylinder 25 is a quadruple cylinder, the five chablon cylinders 27 and the ink devices 28 are arranged, and the ink collecting cylinder 25 and the chablon cylinder 27 are supported by the independent frame 26, so The ink collecting cylinder 25 can be sufficiently supported.

  Here, if the ink collecting cylinder 25 is a triple cylinder, only four chablon cylinders 27 and ink devices 28 can be disposed. If the ink collecting cylinder 25 is five times or more, the entire apparatus becomes too large. Therefore, a quadruple cylinder is appropriate. If the plate cylinder 24 is less than double cylinder, it becomes difficult to install a wiping roller 30 and the like, which will be described later, and if it is more than four cylinders, the entire apparatus becomes too large. The torso is appropriate. Further, if the impression cylinder 21 has a diameter different from that of the plate cylinder 24, printing may be shifted, and therefore, the same diameter, that is, a triple cylinder is appropriate.

  A wiping roller 30 is in contact with the intaglio of the plate cylinder 24. The wiping roller 30 is immersed in a wiping tank 31 that stores a cleaning liquid.

In the paper discharge device 40, a paper discharge drum 41 is in contact with the pressure drum 21. A paper discharge chain (endless transport body) 42 is wound endlessly on a pair of sprockets (not shown) provided coaxially with the paper discharge drum 41. A drying device 44 having a plurality of (four in the illustrated example) UV lamps 43 and the like and a vacuum table 45 face each other across the paper discharge chain 42 from the upstream side to the downstream side in the running direction of the paper discharge chain 42. An inspection device 47 having a drying unit 46, a plurality of (three in the illustrated example) CCD-line camera (inspection means) 47a and the like, and a vacuum cylinder (rotation guide: guide) 48 discharge paper. An inspection section 49 disposed opposite to the chain 42 and a delivery section 51 in which three delivery piles 50 are arranged in parallel are disposed. The paper discharge chain 42 is provided with a gripper device (sheet-like material holding device) 52 which will be described later at regular intervals (see FIGS. 2 and 6).

  In the inspection section 49, as shown in FIG. 2, the movement trajectory of the paper discharge chain 42 guided by the guide rail (chain guide) 53, in other words, a part of the movement trajectory T of the gripper claw device 52 is shown. Further, an arcuate trajectory portion Ta that is curved in an S shape and protrudes toward the inside of a loop (closed space) formed by the movement trajectory T is provided. The inspection device 47 described above is provided inside the loop of the arcuate locus Ta, and the vacuum cylinder 48 described above is provided outside the loop.

The inspection device 47 includes three CCD-line cameras 47a arranged radially around the arcuate locus portion Ta, LED illuminators 54 provided in pairs with the CCD-line cameras 47a, and the like. And four air blowing nozzles 55a to 55d that blow air toward the surface of the paper W that travels along the arcuate trajectory Ta and is provided around the arcuate trajectory Ta. It is equipped with. 2, 56a and 56b air blowing guides, 57a to 57c are vacuum guides, and 58a and 58b are paper guide plates.

  As shown in FIGS. 3 to 5, the vacuum cylinder 48 is rotatably supported by a frame 59 via a bearing 60 at a cylindrical shaft portion 61a and has a circumferential surface substantially the same curvature as the arcuate trajectory portion Ta. And a partition wall 64 that is accommodated in the porous cylinder 61 and that defines a negative pressure chamber 63 having a semicircular cross section through a seal member 62. The negative pressure introduction pipe 65 led out from both sides of the partition wall 64 penetrates the cylindrical shaft portion 61a and protrudes to the outside, communicates with a negative pressure source (not shown) (vacuum pump or the like) through a pipe 66, and is attached to the bracket. The opening of the negative pressure chamber 63 is fixed to the frame 59 via 67, and faces the surface of the paper W traveling along the arcuate locus Ta.

  A gear 68 is fixed to the one cylindrical shaft portion 61a, and an output gear 70 of a vacuum cylinder motor (drive device) 69 is engaged with the gear 68. The peripheral speed of the vacuum cylinder 48 (strictly, the porous cylindrical body 61) can be adjusted, and can be changed to an appropriate peripheral speed with respect to the speed of the paper W.

  That is, as shown in FIG. 7, the vacuum cylinder motor (drive device) 69 is driven and controlled by the control device (control means) 72 together with the driving motor (main drive device) 71. The control device 72 includes a paper information input means (sheet information input means) 73 such as the thickness and material of the paper W, a rotary encoder 74 for the driving motor that detects the speed of the driving motor 71, and a vacuum for the running paper W. A signal from a speed adjustment button (adjustment means) 75 for increasing / decreasing the peripheral speed of the cylinder 48 is input.

  Further, as shown in FIG. 6, the gripper claw device (claw hook) 52 has a claw base shaft on which a plurality of claw bases 76b for supporting the plurality of gripper claws 76a so as to be opened and closed (rotated) and a plurality of claw bases 77a are fixed. 77b is installed between the pair of brackets 78, and the brackets 78 are connected to the paper discharge chain 42 that is guided by the guide rails 53 and travels.

  Further, in FIG. 6, the four air blowing nozzles 55a to 55d are shown in which a large number of cylindrical nozzles 55bb are implanted in a nozzle header 55ba made of a pipe, but a large number of nozzle holes are formed in the pipe. Or a slit formed in a pipe.

  In such an intaglio printing machine, the paper W fed one by one from the paper feeder 10 onto the differential plate 11 is transferred from the swing device 12 through the transfer cylinder 22 to the gripping claw of the impression cylinder 21 and conveyed. On the other hand, the ink of each inking device 28 is transferred to the ink collecting cylinder 25 via the chablon cylinder 27 and supplied onto the intaglio surface of the plate cylinder 24, and the excess ink is removed by the wiping roller 30, and the paper As W passes between the impression cylinder 21 and the plate cylinder 24, the ink is transferred and printed on the paper W, and the paper W passes through the paper discharge cylinder 41 and is discharged from the paper discharge chain 42 of the paper discharge device 40. And is discharged onto a predetermined delivery pile 50.

  In this embodiment, in the inspection unit 49 of the paper discharge device 40, the paper W is traveling along the arcuate trajectory portion Ta provided in a part of the movement trajectory T of the gripper device 52, and the peripheral surface is circular. Inspected by the inspection device 47 while being sucked and guided by a vacuum cylinder 48 (strictly, the porous cylindrical body 61) having a diameter that has substantially the same curvature as the arcuate locus portion Ta.

  At this time, air is blown toward the surface of the paper W from the four air blowing nozzles 55a to 55d, and the porous cylinder 61 is driven and rotated at an appropriate peripheral speed with respect to the speed of the paper W. As a result, the paper W travels stably. In addition, since the porous cylindrical body 61 is disposed on the arc center (curvature center) side of the arcuate locus portion Ta, the holding claw 76a of the gripping claw device 52a of the gripping claw device 52 is not provided on the porous cylindrical body 61 side. Since the tip is brought as close as possible to the suction surface of the porous cylindrical body 61, the paper W can be brought closer to the suction surface of the porous cylindrical body 61 and the porous cylindrical body 61 does not interfere with the gripper claw 76a. Since it can rotate, there is no problem even if the speed of the paper W is changed.

Further, since the inspection device 47 is arranged on the opposite side of the arc-shaped locus portion Ta to the arc-shaped locus portion Ta at the center of the arc, the loop (closed space) formed by the movement locus T of the gripper claw device 52 is disposed. Since a plurality (three in the illustrated example) of CCD-line cameras 47a and the like can be arranged compactly without any restrictions, a plurality of different types of inspections can be effectively performed. In the illustrated example, since the CCD-line camera 47a can be installed sideways, it is also effective for measures against dust and dirt on the camera lens.

  As a result, the paper W printed in the inspection unit 49 can be stably run by the vacuum cylinder 48 having a simple structure and inexpensive, and the inspection device 47 can perform high-precision quality inspection.

  Moreover, in the said Example, various installation patterns as shown in FIG. 10 can be considered as another installation pattern of the test | inspection part 49. FIG.

  Needless to say, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, a belt may be used as the endless transport body instead of the paper discharge chain 42, and a sprocket may be used as the endless transport body guide device instead of the guide rail (chain guide) 53.

  The sheet-like material conveying apparatus according to the present invention is suitable for use in a sheet-fed printing machine that prints banknotes, securities, and the like.

40 Paper discharge device 42 Paper discharge chain
47a CCD-line camera 47 Inspection device 48 Vacuum cylinder 49 Inspection section 52 Holding claw device 53 Guide rail 69 Vacuum cylinder motor 72 Control device 73 Paper information input means 75 Speed adjustment button W Paper T Moving claw device movement locus Ta Arc shape Locus

Claims (6)

A sheet-like material holding device that is provided on the endless conveyance body and holds the end of the sheet-like material;
An arc-shaped trajectory portion provided on a part of the movement trajectory of the sheet-like object holding device toward the inside of a loop formed by the movement trajectory;
A rotation guide provided on the center side of the arc of the arc-shaped trajectory portion, which is driven and rotated, has a diameter with a circumferential surface substantially the same curvature as the arc-shaped trajectory portion, and adsorbs a sheet-like object to the peripheral surface. When,
A sheet-like material conveying apparatus comprising:   2. The sheet-like material conveying apparatus according to claim 1, wherein the rotation guide body is driven and rotated by a dedicated driving device.   The sheet conveying apparatus according to claim 2, further comprising adjusting means for adjusting a peripheral speed of the rotating guide body.   The sheet information input means for inputting various information of the sheet-like material, and the control means for controlling the driving device based on an input signal from the sheet information input means. Sheet-like material transfer device.   2. The sheet conveying apparatus according to claim 1, wherein an inspection device is provided on an opposite side of the arc-shaped locus portion of the arc-shaped locus portion with respect to the arc-shaped locus portion. The sheet inspection apparatus according to claim 5, wherein the inspection apparatus includes a plurality of inspection units.

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