JP2017222041A - Plate fastening system and printing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability while simplifying and reducing manufacturing costs of devices in a plate fastening system and a printing apparatus.SOLUTION: A printing apparatus includes: a plate fastening device 73 to fasten a printing plate 71 by being locked to an end portion of the printing plate 71 having a locking claw 74a wound around an outer circumferential surface of a plate cylinder 41a; a locking claw operation cylinder 79 to engage/disengage the locking claw 74a with/from the end portion of the printing plate 71; and a controller to actuate the locking claw operation cylinder 79 after the elapse of preset predetermined time when an operation command signal of the locking claw operation cylinder 79 is inputted to the controller.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a plate clamping system used for mounting a printing plate on a plate cylinder supported by a printing press, and a printing press including the plate clamping system.

  For example, an offset rotary printing press for newspapers includes a paper feeding device, a printing device, a web pass device, and a folding machine. The printing apparatus includes a plurality of printing units, and each printing unit performs printing on a corresponding web. The printing unit includes an ink supply source, an ink supply device that supplies ink using a plurality of rollers, a plate cylinder on which a printing plate is mounted, and a flanket cylinder that transfers ink (image) to printing paper. I have.

  In this printing unit, a plurality of printing plates are produced according to the printed matter, and printing is carried out by attaching printing plates necessary for printing to the plate cylinder. For this reason, the printing unit is equipped with a plate clamping device for winding the printing plate around the outer peripheral surface of the plate cylinder and fixing both ends thereof. The plate cylinder is provided with a gap portion having a groove shape along the axial direction on the outer peripheral surface, and the plate clamping device is configured by providing a tension bar in the gap portion, and the tension bar provides a rear end of the printing plate. By pulling the part and applying tension to the printing plate, the printing plate is fastened to the plate cylinder and fixed.

  When mounting a printing plate on the plate cylinder, the edge of the printing plate on the side of the plate is locked to the holding portion of the plate cylinder, the printing plate is rotated, the printing plate is wound around the plate cylinder, and printed by the plate clamping device. Lock the tail edge side of the plate to the tail edge of the plate cylinder. At this time, one worker presses the outer peripheral surface of the tail edge side end portion of the printing plate, and the other worker operates the operation switch of the plate clamping device. Then, when the tension bar rotates and the locking claw moves to the release position, the tail edge side end of the printing plate that has been pressed by the operator is pushed into the gap, and the tension bar rotates in the reverse direction. When the locking claw moves to the locking position, the tail edge side end is locked by the locking claw, and the printing plate is fastened and fixed to the plate cylinder by the tension bar.

  In this case, when performing the work of mounting the printing plate on the plate cylinder, two workers are required, and in the situation where the number of personnel with equipment is limited, it is difficult to perform the rapid plate replacement work. It was coming. Therefore, a technique for automatically performing plate replacement work has been proposed. For example, there is one described in Patent Document 1 below.

JP 2008-55794 A

  In the semi-automatic plate change apparatus described in Patent Document 1 described above, the plate pressing roller is in a state of being pressed to press the printing plate against the plate cylinder, and the plate pressing roller automatically pushes the end edge side of the printing plate into the gap portion. In this case, the tension bar is rotated and locked by a locking claw. In this semi-automatic plate changer, the operator only needs to input an operation command to the controller, and one worker can perform the plate change work. However, a plurality of plate pressing rollers, their driving devices, various sensors, and the like are required at the periphery of the plate cylinder, which causes a problem that the structure becomes complicated and the manufacturing cost increases.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, and to provide a plate clamping system and a printing machine that improve workability and simplify the apparatus and reduce manufacturing costs.

  A plate clamping system according to the present invention for achieving the above-described object includes a plate clamping device in which a locking claw is engaged with an end portion of a printing plate wound around an outer peripheral surface of a plate cylinder to fasten the printing plate. A latching claw actuating device that engages and disengages the latching claw with respect to the end of the printing plate, and the latching claw after a predetermined time elapses when an operation command signal of the latching claw actuating device is input. And a control device for actuating the actuating device.

  Accordingly, when the operation command signal is input, the control device operates the locking claw operation device after a predetermined time has elapsed. Therefore, when the operator performs the plate mounting operation and the operation command signal is output, the control device secures a waiting time for a predetermined time from the input of the operation command signal. Further, the end of the printing plate wound around the outer peripheral surface of the plate cylinder can be pressed from the outside. Then, when the predetermined time elapses and the locking claw actuating device is activated, the locking claw is activated and locked to the end of the printing plate, and the printing plate can be fastened to the outer peripheral surface of the plate cylinder. As a result, it is possible for a single worker to perform the operation of mounting the printing plate on the plate cylinder, and the workability can be improved by performing a quick plate replacement operation. Further, in addition to the existing plate clamping device and the latching claw actuating device, only the operation command signal input / output device is required, so that a large-scale device is unnecessary, and the device can be simplified and the manufacturing cost can be reduced.

  In the plate clamping system of the present invention, an operation switch for operating the latching claw operation device is provided, and the control device receives the operation command signal output by operating the operation switch, and after a predetermined time has elapsed. The locking claw actuating device is actuated.

  Therefore, when the operation switch is operated and an operation command signal is output, and when the operation command signal is input, the control device operates the locking claw operation device after a predetermined time elapses. The end of the printing plate wound around the outer peripheral surface of the plate cylinder can be pressed from the outside during a predetermined time from the input of the command signal, and the installation work of the printing plate on the plate cylinder can be performed by one operator. It becomes possible to implement, and workability can be improved.

  In the plate clamping system of the present invention, the operation switch is a push button switch that can be operated by an operator.

  Therefore, the operator operates the pushbutton switch to output an operation command signal, and when the operation command signal is input, the control device operates the locking claw operation device after a predetermined time elapses. The operator can press the end of the printing plate wrapped around the outer periphery of the plate cylinder from the outside for a predetermined time after operating the pushbutton switch, and the plate is mounted on the plate cylinder. The work can be performed by one worker, and the workability can be improved.

  The plate clamping system according to the present invention is characterized in that the pushbutton switch is disposed to face the operator at substantially the same height as the plate cylinder.

  Therefore, the pushbutton switch can be operated using the operator's body by arranging the pushbutton switch facing the worker at almost the same height as the plate cylinder, thereby improving operability. Can do.

  In the plate clamping system according to the present invention, the push button switch is a foot switch arranged on a floor where an operator performs a plate clamping operation.

  Therefore, by using the push button switch as a foot switch arranged on the floor, the push button switch can be operated by the operator's foot, and the operability can be improved.

  In the plate clamping system according to the present invention, a safety bar is arranged in parallel with the plate cylinder on the outer periphery of the plate cylinder, and the push-button switch is arranged on the safety bar.

  Therefore, by arranging the pushbutton switch on the safety bar, the operator can press the end of the printing plate immediately after operating the pushbutton switch, and the operability can be improved.

  In the plate clamping system of the present invention, the operation switch is a detection switch for detecting a hand of an operator who presses the printing plate wound around the outer peripheral surface of the plate cylinder.

  Therefore, when the operator presses the end of the printing plate wound around the outer periphery of the plate cylinder from the outside, the detection switch detects the operator's hand holding the printing plate, and an operation command signal is output and the control is output. When this operation command signal is input, the device activates the latching claw actuation device after a lapse of a predetermined time, so that the operator automatically presses the end of the printing plate and the latching claw actuation device is automatically activated. Therefore, it is possible to perform the work of mounting the printing plate on the plate cylinder by one operator, and the workability can be improved.

  In the plate clamping system of the present invention, a human sensor for detecting that an operator is on the floor performing the plate clamping operation is provided, and the control device detects the worker by the human sensor and operates the operation. When the command signal is input, the locking claw actuating device is actuated after a lapse of a predetermined time.

  Therefore, when the operation command signal is input after the human sensor detects the worker, the control device activates the locking claw actuating device after a lapse of a predetermined time. The safety can be improved.

  In the plate clamping system of the present invention, the plate cylinder can be mounted with a plurality of the printing plates along the axial direction, and the plate clamping device can be configured such that the locking claw can individually restrain the plurality of printing plates. And the latching claw actuating device can individually actuate the latching claws restraining a plurality of the printing plates.

  Therefore, the latching claw actuating device can individually restrain a plurality of printing plates mounted on the plate cylinder by the respective latching claws, thereby improving workability.

  The printing machine of the present invention includes an ink supply device that supplies ink, a plate cylinder that supplies ink to a printing plate mounted on an outer peripheral portion from the ink supply device, and an image of ink received from the plate cylinder. A blanket cylinder for transferring the image to the web, and the plate clamping system.

  Therefore, when the plate is mounted on the plate cylinder, when the operator performs a plate loading operation and an operation command signal is output, a waiting time of a predetermined time is secured from the input of the operation command signal. During this waiting time, the end portion of the printing plate wound around the outer peripheral surface of the plate cylinder can be pressed from the outside. Then, when the predetermined time elapses and the locking claw actuating device is activated, the locking claw is activated and locked to the end of the printing plate, and the printing plate can be fastened to the outer peripheral surface of the plate cylinder. As a result, it is possible for a single worker to perform the operation of mounting the printing plate on the plate cylinder, and the workability can be improved by performing a quick plate replacement operation. Further, in addition to the existing plate clamping device and the latching claw actuating device, only the operation command signal input / output device is required, so that a large-scale device is unnecessary, and the device can be simplified and the manufacturing cost can be reduced.

  According to the plate clamping system and the printing machine of the present invention, when the operation command signal of the latching claw actuating device is input, the latching claw actuating device is activated after a predetermined time has elapsed, so that a quick plate change operation can be performed. By implementing this, it is possible to improve workability, simplify the apparatus and reduce the manufacturing cost without requiring a large-scale apparatus.

FIG. 1 is a block diagram illustrating a plate clamping system according to the first embodiment. FIG. 2 is a schematic front view showing a printing unit to which the plate clamping system is applied. FIG. 3 is a schematic plan view showing the printing unit. FIG. 4 is a flowchart showing a plate clamping operation by the plate clamping system. FIG. 5A is a schematic diagram illustrating the phase alignment operation of the gap portion of the plate cylinder. FIG. 5B is a schematic diagram illustrating a plate-hanging operation on the plate cylinder. FIG. 5-3 is a schematic diagram illustrating the work of winding the plate around the plate cylinder. FIG. 5-4 is a schematic diagram illustrating a plate fastening operation to the plate cylinder. FIG. 6 is a schematic configuration diagram illustrating a newspaper offset rotary printing press. FIG. 7 is a schematic configuration diagram illustrating a printing unit in a newspaper offset rotary printing press. FIG. 8 is a schematic view showing a plate clamping device. FIG. 9 is a schematic diagram illustrating a plate clamping operation by the plate clamping apparatus. FIG. 10 is a schematic diagram illustrating a plate clamping operation by the plate clamping apparatus. FIG. 11 is a block configuration diagram illustrating a plate clamping system according to the second embodiment. FIG. 12 is a schematic front view showing a printing unit to which the plate clamping system is applied. FIG. 13 is a schematic plan view showing a printing unit. FIG. 14 is a block configuration diagram illustrating a plate clamping system according to the third embodiment. FIG. 15 is a schematic front view showing a printing unit to which the plate clamping system is applied. FIG. 16 is a schematic plan view showing a printing unit. FIG. 17 is a block diagram illustrating a plate clamping system according to the fourth embodiment. FIG. 18 is a schematic front view showing a printing unit to which the plate clamping system is applied. FIG. 19 is a schematic plan view showing a printing unit. FIG. 20 is a block configuration diagram illustrating a plate clamping system according to the fifth embodiment. FIG. 21 is a schematic front view showing a printing unit to which the plate clamping system is applied. FIG. 22 is a schematic plan view showing a printing unit.

  Exemplary embodiments of a plate clamping system and a printing press according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment, Moreover, when there exist several embodiment, what comprises combining each embodiment is also included.

[First Embodiment]
FIG. 6 is a schematic configuration diagram illustrating a newspaper offset rotary printing press, and FIG. 7 is a schematic configuration diagram illustrating a printing unit in the newspaper offset rotary printing press.

  In the first embodiment, as shown in FIG. 6, the printing press P includes a paper feeding device R, an infeed device I, a printing device U, a web pass device D, and a folding machine F. . The paper feeding device R has a plurality (seven in this embodiment) of paper feeding units R1 to R7, and the infeed device I has a plurality (seven in this embodiment) of infeed units I1 to I7. The printing apparatus U has a plurality (6 in this embodiment) of printing units U1 to U6, and the web pass apparatus D has a plurality of (2 in the present embodiment) web pass units D1. , D2 and the folding machine F has a plurality of (two in this embodiment) folding units F1, F2.

  In this case, the printing units U1 to U6 are described as six units. However, each of the printing units U1 to U6 can perform four-color printing, and can be divided vertically into twelve two-color printing units U11 and U12. , U21... U61, U62. In addition, although the two folding units F1 and F2 are described above and below, actually, there are an operation side folding unit F1 and a driving side folding unit F2 that are arranged side by side in a direction orthogonal to the paper surface. Furthermore, although the printing apparatus U has been described from two parts, it has been described by dividing it into two in terms of function, and in reality, it is a single apparatus.

  In the paper feeding device R, the paper feeding units R1 to R7 have substantially the same configuration, and have a holding arm for holding three webs on which a web (print medium) W is wound in a roll shape. By rotating, the web can be rotated to the paper feeding position. Each of the paper feeding units R1 to R7 is provided with a paper splicing device (not shown), and when the remaining web fed out at the paper feeding position becomes small, the paper splicing device causes the paper web at the paper feeding position to be fed. Thus, the web at the standby position can be spliced.

  In the infeed apparatus I, the infeed units I1 to I7 have substantially the same configuration, and the web traveling through the printing apparatus U is adjusted by adjusting the tension of the web W fed to the printing units U1 to U6 of the printing apparatus U. The tension of W is stably maintained at an appropriate value. For example, each of the infeed units I1 to I7 includes an infeed roller, a paper pressing rubber roller, a dancer roller, a guide roller, and the like. Then, the tension of the web W is made appropriate by urging the dancer roller in the tensioning direction of the web W, the peripheral speed of the infeed roller is changed according to the swing of the dancer roller, and the proper tension of the web W is maintained. ing.

  In the printing apparatus U, the printing units U1 to U6 are multicolor printing units capable of performing double-sided four-color printing. However, each printing unit U1-U6 can be made into the printing units U11-U62 which can perform double-sided two-color printing by dividing | segmenting up and down. Each of the printing units U11 to U62 has substantially the same configuration and has an ink supply device, a plate cylinder, a blanket cylinder, and the like, which will be described later.

  In the web pass apparatus D, the web pass unit D1 is provided for the printing units U1 to U3, and the web pass unit D2 is provided for the printing units U4 to U6. Each of the web path units D1 and D2 has substantially the same configuration, and is a slitter that cuts the web W along the longitudinal direction (the longitudinal direction of the web W, the conveyance direction of the web W) at the center in the width direction, and the longitudinal cut. A turn bar for setting the transport path of the web W, and a compensator for adjusting the transport position of the web W in the vertical direction.

  That is, the webs W printed by the printing units U1 to U3 are vertically cut by the slitter in the web pass unit D1, changed by the turn bar, changed by the turn bar, and adjusted by the compensator. Are overlaid in order. Each of the webs W printed by the printing units U4 to U6 is vertically cut by a slitter in the web pass unit D2, is changed by a turn bar, a transfer path is changed, and a transfer position is adjusted by a compensator. They are stacked in order.

  In the folding machine F, the two folding units F1 and F2 are arranged on the operation side and the drive side. That is, when a plurality of webs W1 are overlapped and introduced from the web pass unit D1, the folding unit F1 vertically folds the web W1, cuts it horizontally by a predetermined length, and folds it to form a fold. The paper can be discharged as a newspaper. In addition, when a plurality of webs W2 are overlapped and introduced from the web pass unit D2, the folding unit F2 vertically folds the web W2, cuts the web W2 by a predetermined length, and then horizontally folds to form a fold. The paper can be discharged as a newspaper.

  Here, the printing unit U1 in the printing apparatus U will be described in detail. The other printing units U2 to U6 have substantially the same configuration.

  As shown in FIG. 7, the printing unit U1 is an H-type tower unit so that four-color printing is possible. In the printing unit U1, the conveyance direction of the web W is upward in the vertical direction. From the bottom to the top, 4 for each of black, cyan, magenta, and yellow. Two stacks 21, 22, 23, and 24 are arranged. Each of the stacks 21, 22, 23, and 24 has a roller arrangement that is bilaterally symmetrical.

  Each stack 21, 22, 23, 24 can be opposed to the blanket cylinders 31 a, 31 b, 32 a, 32 b, 33 a, 33 b, 34 a, 34 b across the conveyance path of the web W. Plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b are in contact with the cylinders 31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b. The stacks 21, 22, 23, and 24 are respectively connected to the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, and 44b with ink supply devices 51a, 51b, 52a, 52b, 53a, 53b, 54a and 54b are provided. Further, dampening devices 61a, 61b, 62a, 62b, 63a, 63b, 64a, 64b are provided for the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b.

  In this case, in the stacks 21 and 23, the blanket cylinders 31a, 31b, 33a and 33b and the plate cylinders 41a, 41b, 43a and 43b are arranged in a letter C shape, and the stacks 22 and 24 are in the blanket cylinders 32a, 32b and 34a. , 34b and plate cylinders 42a, 42b, 44a, 44b are arranged in an inverted C shape. In each plate cylinder 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b, a printing plate (not shown) that prints a different pattern on the outer peripheral surface is along the axial direction, that is, the width direction of the web W. Can be installed side by side. Further, the left side is a front surface printing unit that performs front surface printing and the right side is a back surface printing unit that performs back surface printing with respect to the conveyance path of the web W along the upward direction in the vertical direction.

  By the way, in each printing unit U1 to U6, the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b are mounted with printing plates on the outer periphery, and these printing plates are used according to the printed matter. A plurality of plates are manufactured, and plate plates necessary for printing are mounted on the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b. Therefore, each of the printing units U1 to U6 is equipped with a plate clamping device for winding and fixing the printing plate around the outer peripheral surfaces of the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b.

  Hereinafter, the plate clamping device will be described. Here, the plate clamping device mounted on the plate cylinder 41a of the stack 21 in the printing unit U1 will be described. FIG. 8 is a schematic diagram illustrating a plate clamping device, and FIGS. 9 and 10 are schematic diagrams illustrating a plate clamping operation by the plate clamping device.

  As shown in FIG. 8, the plate cylinder 41a has a plate 71 wound around a cylindrical outer peripheral surface. In the plate cylinder 41a, a gap portion 72 having a groove shape along the axial direction is formed in the outer peripheral portion, and a grip portion 72a having an edge portion sharply formed at one end portion in the circumferential direction of the gap portion 72. A tail edge portion 72b whose edge portion is sharpened at an acute angle is formed at the end portion. On the other hand, the printing plate 71 has a tail end 71a having an end bent at an acute angle at one end in the longitudinal direction (circumferential direction of the plate cylinder 41a) and an end bent at an acute angle at the other end. A bottom end portion 71b is formed.

  In the printing plate 71, the gripping end portion 71a enters the gap portion 72 of the plate cylinder 41a, and is brought into contact with and locked to the gripping portion 72a. The plate 71 has a tail edge side end portion 71 b that enters the gap portion 72 of the plate cylinder 41 a, contacts the tail edge portion 72 b, and is locked to the plate clamping device 73. The plate clamping device 73 has a tension bar 74 disposed in the gap portion 72 along the axial direction of the plate cylinder 41a. The tension bar 74 is rotatably provided in the gap portion 72, and a locking claw 74 a projects from the outer peripheral portion. The locking claw 74 a is engaged with the tail edge side end portion 71 b of the printing plate 71. It is possible to stop. The tension bar 74 has a lever 74b fixed to the outer periphery thereof.

  The plate cylinder 41a is provided with a spring support member 75 adjacent to the gap portion 72, and a guide shaft 76 is fitted in the guide hole 75a so as to be movable in the axial direction. The compression coil spring 77 is disposed around the guide shaft 76 and is stretched between the spring support member 75 and the head portion 76 a of the guide shaft 76. The lever 74b of the tension bar 74 and the head portion 76a of the guide shaft 76 are rotatably connected by a connecting shaft 78. Therefore, the tension bar 74 is urged and supported in the clockwise direction in FIG. 8, that is, in the direction in which the locking claw 74 a is locked to the tail edge side end portion 71 b of the printing plate 71.

  Further, on the outer peripheral side of the plate cylinder 41a, a locking claw operating cylinder (air cylinder) 79 is disposed adjacent to the plate clamping device 73, and the locking claw operating cylinder 79 has a locking claw operating rod 79a as a shaft. It can move in the direction. The locking claw operating rod 79a is disposed at a position facing the guide shaft 76 (head 76a) of the plate clamping device 73.

  The plate clamping device 73 and the locking claw operating cylinder 79 are disposed on the axial end side of the plate cylinder 41a, and the locking claw operating cylinder 79 is supported by a printing machine frame (not shown).

  The plate clamping device 73 has a tension bar 74 that is biased and supported by the compression coil spring 77, and the locking claw 74a is locked to the tail edge side end portion 71b of the printing plate 71. 71 is constrained to the outer peripheral surface of the plate cylinder 41a. Therefore, when removing the printing plate 71 from the plate cylinder 41a, the locking claw operating rod 79a of the locking claw operating cylinder 79 is extended, the guide shaft 76 is pressed against the urging force of the compression coil spring 77, and the lever 74b. The tension bar 74 is rotated counterclockwise in FIG. Then, the locking claw 74 a is separated from the tail edge side end portion 71 b of the printing plate 71, so that the restriction of the tail edge side end portion 71 b is released, and the tail edge side end portion 71 b is released from the gap portion 72. The cylinder 41a can be taken out of the cylinder 41a, and the printing plate 71 can be removed from the cylinder 41a by rotating the plate cylinder 41a.

  On the other hand, when the printing plate 71 is mounted on the plate cylinder 41a, as shown in FIG. 9, the grip-side end portion 71a of the printing plate 71 is locked to the gripping portion 72a of the plate cylinder 41a. In FIG. 9, the plate 71 is wound around the plate cylinder 41 a by rotating counterclockwise, and the tail edge side end portion 71 b is positioned outside the gap portion 72. Then, the operator manually presses the outer peripheral surface of the tail edge side end portion 71 b of the printing plate 71 and extends the locking claw operating rod 79 a by the locking claw operating cylinder 79. Then, the latching claw operating rod 79a presses the guide shaft 76 to rotate the tension bar 74 in the counterclockwise direction in FIG. 9, and the latching claw 74a moves to the release position. Here, as shown in FIG. 10, when the operator manually presses the tail edge side end portion 71 b of the printing plate 71, the tail edge side end portion 71 b enters the gap portion 72. Here, when the locking claw operating rod 79 a is contracted by the locking claw operating cylinder 79, the locking claw operating rod 79 a is separated from the guide shaft 76, and the tension bar 74 is urged by the urging force of the compression coil spring 77. Then, the locking claw 74a is locked to the tail edge side end portion 71b of the printing plate 71, thereby restraining the printing plate 71 to the outer peripheral surface of the plate cylinder 41a.

  The plate clamping system according to the first embodiment enables a single operator to perform the work of mounting the printing plate 71 on the plate cylinder 41a. FIG. 1 is a block diagram showing the plate clamping system of the first embodiment, FIG. 2 is a schematic front view showing a printing unit to which the plate clamping system is applied, and FIG. 3 is a schematic plan view showing the printing unit. .

  In the first embodiment, as shown in FIGS. 1 to 3, the plate clamping system 80 is provided on the end portion of the printing plate 71 in which the locking claw 74 a is wound around the outer peripheral surfaces of the plate cylinders 41 a, 41 b, 42 a, 42 b. A plate clamping device 73 for locking and fastening the printing plate 71, a locking claw operating cylinder 79 as a locking claw operating device for engaging and disengaging the locking claw 74a with respect to the end portion of the printing plate 71, And a control device 81 that operates the locking claw operating cylinder 79 after a predetermined time has elapsed when an operation command signal for the claw operating cylinder 79 is input.

  The plate clamping system 80 detects the operator's hand pressing the printing plate 71 wound around the outer peripheral surface of the plate cylinders 41a, 41b, 42a, 42b as an operation switch for operating the latching claw operation cylinder 79. A detection switch 82 is provided. Therefore, the control device 81 outputs an operation command signal from the detection switch 82 when the detection switch 82 detects the hand of the operator pressing the plate 71, and the control device 81 receives a predetermined time after receiving this operation command signal. After the elapse of time, the latching claw operating cylinder 79 is operated. Further, the control device 81 is connected to a timer 83, and a predetermined time is measured by the timer 83. The predetermined time can be appropriately adjusted according to the operation mode of the plate clamping device 73 and the locking claw operating cylinder 79.

  By the way, as shown in FIGS. 5A and 5B, the plate cylinder 41a (41b, 42a, 42b) is provided with a gap portion 72 along the axial direction in the outer peripheral portion, and four pieces along the axial direction. The plate mounting areas A1, A2, A3 and A4 are secured. The plate cylinder 41a is capable of mounting the printing plates 71A, 71B, 71C, 71D in the printing plate mounting areas A1, A2, A3, A4. On the other hand, in the plate clamping device 73, the locking claws 74a can individually lock (restrain) the printing plates 71A, 71B, 71C, 71D, and the locking claw operating cylinder 79 includes the printing plates 71A, 71B, The locking claws 74a that lock 71C and 71D can be individually operated.

  As shown in FIGS. 2 and 3, in the stacks 21 and 22, printing machine frames 91 and 92 are erected on the left and right sides, and in the space between the printing machine frames 91 and 92, the blanket cylinder 31 a is located on the lower side. 31b and plate cylinders 41a and 41b are arranged, and blanket cylinders 32a and 32b and plate cylinders 42a and 42b are arranged on the upper side, and each blanket cylinder 31a, 31b, 32a and 32b and plate cylinders 41a, 41b, 42a and 42b are arranged. Are supported by the printing machine frames 91 and 92 so as to be driven to rotate. Work floors 93a and 93b are arranged on the worker side between the printing machine frames 91 and 92 on the left and right, and work floors 94a and 94b on which the worker performs plate mounting work on the front side of the work tables 93a and 93b. Is provided.

  As described above, since the plate cylinders 41a, 41b, 42a, and 42b have four plate mounting areas A1, A2, A3, and A4, the operator can set the plate mounting areas A1, A2 respectively. , A3, A4, the plate 71 is mounted. Therefore, the detection switch 82 (82Aa, 82Ba, 82Ca, 82Da, 82Ab, 82Bb, 82Cb, 82Db) is arranged in each plate mounting area A1, A2, A3, A4 corresponding to each plate cylinder 41a, 41b, 42a, 42b. Has been. A plate cylinder selection switch 84 (84a, 84b) is provided on the work space side of the work tables 93a, 93b. The plate cylinder selection switch 84 (84a, 84b) selects the plate cylinders 41a, 41b, 42a, 42b to be subjected to plate exchange among the plate cylinders 41a, 41b of the stack 21 and the plate cylinders 42a, 42b of the stack 22. Is.

  Here, the plate clamping operation by the plate clamping system 80 of the present embodiment will be described in detail.

  FIG. 4 is a flowchart showing the plate clamping operation by the plate clamping system, FIG. 5-1 is a schematic diagram showing the phase alignment operation of the gap portion of the plate cylinder, and FIG. 5-2 shows the plate hanging operation on the plate cylinder. FIG. 5-3 is a schematic diagram illustrating a plate winding operation around a plate cylinder, and FIG. 5-4 is a schematic diagram illustrating a plate tightening operation onto the plate cylinder.

  In the plate clamping operation of the printing plate 71 with respect to the plate cylinder 41a, as shown in FIGS. 4 and 5-1, in step S11, the plate cylinder 41a is rotated to phase out the gap portion 72. 72 is positioned at a predetermined position, that is, a position where the operator can insert the grip-side end portion 71 a of the printing plate 71 into the gap portion 72. As shown in FIGS. 4 and 5-2, in step S12, the operator places the grip-side end portion 71Aa of the corresponding printing plate 71A in the gap portion 72 with respect to the printing plate mounting area A1 in the plate cylinder 41a. The plate-hanging operation to be locked to is performed. Subsequently, the operator similarly applies the grip-side end portions of the corresponding printing plates 71B, 71C, 71D to the gap portions for the remaining printing plate mounting areas A2, A3, A4 in the plate cylinder 41a. A plate-hanging operation for locking to 72 is performed.

  Then, as shown in FIGS. 4 and 5-3, in step S13, the plate cylinder 41a is rotated once and the plates 71A, 71B, 71C, 71D are wound around the outer peripheral surface of the plate cylinder 41a. Here, each printing plate 71A, 71B, 71C, 71D is wound around the plate cylinder 41a, but the tail edge side end portions 71Ab, 71Bb, 71Cb, 71Db are not inserted into the gap portion 72. As shown in FIGS. 4 and 5-4, in step S14, the operator first presses the tail edge side end portion 71Ab on the outer peripheral surface of the plate 71A. Then, as shown in FIGS. 3 and 4, the detection switch 82Aa can detect the operator's hand pressing the outer peripheral surface of the plate 71A.

  When the detection switch 82Aa detects the operator's hand at step S15 (Yes), the timer 83 starts to operate at step S16. In this case, for example, when the detection switch 82Aa detects the operator's hand, the lamp is turned on. When the detection switch 82Aa continuously detects the operator's hand for a predetermined time, the operation of the timer 83 is started. It is desirable to configure. In step S15, if the detection switch 82Aa does not detect the operator's hand (No), the operation of the timer 83 is not started. In step S17, it is determined whether or not a predetermined time has elapsed since the detection switch 82Aa detected the hand of the worker.

  Here, if the detection switch 82Aa detects the operator's hand and the predetermined time has not elapsed (No), the process of step S16 is continued, and the detection switch 82Aa detects the operator's hand and the predetermined time has elapsed. In step S18, the tail end side end portion 71Ab of the printing plate 71A is inserted into the gap portion 72 and locked by the plate clamping device 73, and the plate clamping is performed. That is, as shown in FIG. 9, in a state where the operator manually presses the tail edge side end portion 71b on the outer peripheral surface of the plate 71 from the outside, the locking claw operating rod 79a is operated by the locking claw operating cylinder 79. Is extended, the latching claw actuating rod 79a presses the guide shaft 76, rotates the tension bar 74, and moves the latching claw 74a to the release position. Then, the tail edge side end portion 71 b of the printing plate 71 is pushed by the operator's hand and enters the gap portion 72. Next, when the locking claw operating rod 79 a is contracted by the locking claw operating cylinder 79, The locking claw operating rod 79a is separated from the guide shaft 76, the tension bar 74 is rotated by the biasing force of the compression coil spring 77, and the locking claw 74a is locked to the tail edge side end portion 71b of the printing plate 71A. . Therefore, the printing plate 71 is mounted on the outer peripheral surface of the plate cylinder 41 a by the plate clamping device 73.

  When the mounting operation of the printing plate 71A on the plate cylinder 41a is completed, the mounting operations of the printing plates 71B, 71C, and 71D on the plate cylinder 41a are sequentially performed by the same method. When all the printing plates 71A, 71B, 71C, 71D are mounted on the plate cylinder 41a, the plate clamping operation of the plate cylinder 41a is completed in step S19.

  Thus, in the plate clamping system of the first embodiment, the locking claw 74a is locked to the end of the printing plate 71 wound around the outer peripheral surface of the plate cylinder 41a (41b, 42a, 42b). When a plate clamping device 73 for fastening the plate 71, a locking claw operating cylinder 79 for engaging and disengaging the locking claw 74a with respect to the end of the printing plate 71, and an operation command signal for the locking claw operating cylinder 79 are input in advance. There is provided a control device 81 for operating the latching claw operating cylinder 79 after elapse of a set predetermined time.

  Therefore, when the operation command signal is input, the control device 81 operates the locking claw operation cylinder 79 after a predetermined time has elapsed. Therefore, when the operator performs the plate mounting operation and the operation command signal is output, the control device 81 secures a waiting time for a predetermined time from the input of the operation command signal. In the meantime, the end portion of the printing plate 71 wound around the outer peripheral surface of the plate cylinder 41a can be pressed from the outside. Then, when the predetermined time elapses and the latching claw operating cylinder 79 is actuated, the latching claw 74a is actuated and latched to the tail edge side end portion 71b of the printing plate 71, and the printing plate 71 is attached to the plate cylinder 41a. It can be fastened to the outer peripheral surface. As a result, the work of mounting the printing plate 71 on the plate cylinder 41a can be performed by one operator, and the workability can be improved by performing the rapid plate replacement work. Further, in addition to the existing plate clamping device 73 and the locking claw operating cylinder 79, only an operation command signal input / output device is required, and a large-scale device is not required, so that the device can be simplified and the manufacturing cost can be reduced.

  In the plate clamping system of the first embodiment, a detection switch 82 for detecting the operator's hand pressing the tail edge side end portion 71b of the printing plate 71 is provided as an operation switch for operating the locking claw operation cylinder 79, and is controlled. When the operation command signal output from the detection switch 82 is input, the device 81 operates the locking claw operating cylinder 79 after a predetermined time has elapsed. Therefore, when the operator presses the tail edge 71b of the printing plate 71, the detection switch 82 detects the operator's hand pressing the printing plate 71, and an operation command signal is output. When this operation command signal is input, the latching claw actuation cylinder 79 is actuated after a lapse of a predetermined time. Therefore, the operator simply presses the tail edge side end portion 71b of the printing plate 71 to activate the latching claw. Since the cylinder 79 is automatically operated, the work of mounting the printing plate 71 on the plate cylinder 41a can be performed by one operator, and the workability can be improved.

  In the printing machine of the present embodiment, ink supply devices 51a, 51b, 52a, 52b, 53a, 53b, 54a, 54b for supplying ink, and plate cylinders 41a, 41b, 42a, 42b, 43a, 43b are provided. 44a, 44b, blanket cylinders 31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b, and a plate clamping system 80.

  Accordingly, when the printing plate 71 is mounted on the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, and 44b, when the operator performs a plate mounting operation and outputs an operation command signal, the operation command signal A waiting time of a predetermined time is secured from the input, and the operator can end the end portion of the printing plate 71 wound around the outer peripheral surface of the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b during this waiting time. Can be pressed from the outside. As a result, the plate 71 can be mounted on the plate cylinders 41a, 41b, 42a, 42b, 43a, 43b, 44a, and 44b by one operator, and a rapid plate change operation is performed. Thus, the workability can be improved. Further, in addition to the existing plate clamping device 73 and the locking claw operating cylinder 79, only an operation command signal input / output device is required, and a large-scale device is not required, so that the device can be simplified and the manufacturing cost can be reduced.

[Second Embodiment]
FIG. 11 is a block configuration diagram illustrating a plate clamping system according to the second embodiment, FIG. 12 is a schematic front view illustrating a printing unit to which the plate clamping system is applied, and FIG. 13 is a schematic plan view illustrating the printing unit. . In addition, the same code | symbol is attached | subjected to the member which has the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

  In the second embodiment, as shown in FIGS. 11 to 13, the plate clamping system 80 is provided at the end of the printing plate 71 in which the locking claws 74 a are wound around the outer peripheral surfaces of the plate cylinders 41 a, 41 b, 42 a, 42 b. A plate clamping device 73 for locking and fastening the printing plate 71, a locking claw operating cylinder 79 as a locking claw operating device for engaging and disengaging the locking claw 74a with respect to the end portion of the printing plate 71, And a control device 81 that operates the locking claw operating cylinder 79 after a predetermined time has elapsed when an operation command signal for the claw operating cylinder 79 is input.

  The plate clamping system 80 detects the operator's hand pressing the printing plate 71 wound around the outer peripheral surface of the plate cylinders 41a, 41b, 42a, 42b as an operation switch for operating the latching claw operation cylinder 79. A detection switch 82 is provided. Further, the plate clamping system 80 is provided with a human sensor 85 that detects that the worker is on the work floors 94a and 94b performing the plate clamping operation. Therefore, when the human sensor 85 detects the operator and the detection switch 82 detects the operator's hand pressing the printing plate 71 wound around the plate cylinders 41a, 41b, 42a, 42b, the control device 81 When the second operation command signal is output from the human sensor 85 and the first operation command signal is output from the detection switch 82, the control device 81 receives the operation command signal, and then, after the predetermined time has passed, The operation cylinder 79 is operated.

  In the stacks 21 and 22, detection switches 82Aa, 82Ba, 82Ca, 82Da, 82Ab, 82Bb, 82Cb, and 82Db are provided in the plate mounting areas A1, A2, A3, and A4 corresponding to the plate cylinders 41a, 41b, 42a, and 42b. Has been placed. A human sensor 85a is provided above the work floor 94a facing the plate cylinders 41a and 42a, and a human sensor 85b is provided above the work floor 94b facing the plate cylinders 41b and 42b. The positions of the human sensors 85a and 85b are not limited to the positions above the work floors 94a and 94b, but the work floors 94a and 94b (human mats), the side of the work floors 94a and 94b, and the front of the work floors 94a and 94b. Or you may provide in back. The human sensors 85a and 85b may be ultrasonic sensors, infrared sensors, photoelectric sensors, or the like.

  Here, the plate clamping operation by the plate clamping system 80 of the present embodiment will be described in detail.

  When the worker is positioned on the work floor 94a in front of the work table 93a, the human sensor 85a detects the worker. The operator rotates the plate cylinder 41a to shift the phase of the gap portion 72, and the corresponding printing plates 71A, 71B, 71C with respect to the respective plate mounting areas A1, A2, A3, A4 in the plate cylinder 41a. , 71D, a plate-hanging operation for locking the grip-side end portion to the gap portion 72 is performed. Then, the plate cylinder 41a is rotated once, and the printing plates 71A, 71B, 71C, 71D are wound around the outer peripheral surface of the plate cylinder 41a. Here, the operator presses the tail edge side end portion 71Ab on the outer peripheral surface of the plate 71A. Then, the detection switch 82Aa detects the operator's hand pressing the outer peripheral surface of the plate 71A.

  That is, when the human sensor 85a detects the operator and the detection switch 82Aa detects the operator's hand pressing the printing plate 71 wound around the plate cylinder 41a, the timer 83 starts operating. When the detection switch 82Aa detects the operator's hand and a predetermined time elapses, the plate clamping device 73 inserts the tail edge side end portion 71Ab of the printing plate 71A into the gap portion 72 and engages with the locking claw 74a. Stopped. Similarly, the mounting work of the printing plates 71B, 71C, and 71D on the plate cylinder 41a is sequentially performed.

  As described above, in the plate clamping system according to the second embodiment, the detection switch 82 for detecting the hand of the operator who presses the printing plate 71 wound around the outer peripheral surface of the plate cylinders 41a, 41b, 42a, 42b, And a human sensor 85 (85a, 85b) for detecting that the person is on the work floors 94a, 94b performing the plate clamping work, and the control device 81 has the human sensors 85a, 85b working on the work floors 94a, 94b. When the detection switch 82Aa detects the operator's hand pressing the printing plate 71 wound around the plate cylinders 41a, 41b, 42a, 42b, the locking claw operating cylinder 79 is activated after a predetermined time. Let

  Therefore, when the operation command signal is input after the human sensors 85a and 85b detect the operator, the control device 81 operates the locking claw operating cylinder 79 after a predetermined time has elapsed, so that the plate is mounted by the operator. Implementation of work can be clearly confirmed, and safety can be improved.

[Third Embodiment]
FIG. 14 is a block diagram showing a plate clamping system according to the third embodiment, FIG. 15 is a schematic front view showing a printing unit to which the plate clamping system is applied, and FIG. 16 is a schematic plan view showing the printing unit. . In addition, the same code | symbol is attached | subjected to the member which has the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

  In the third embodiment, as shown in FIGS. 14 to 16, the plate clamping system 80 is provided at the end portion of the printing plate 71 in which the locking claws 74a are wound around the outer peripheral surfaces of the plate cylinders 41a, 41b, 42a, 42b. A plate clamping device 73 for locking and fastening the printing plate 71, a locking claw operating cylinder 79 as a locking claw operating device for engaging and disengaging the locking claw 74a with respect to the end portion of the printing plate 71, And a control device 81 that operates the locking claw operating cylinder 79 after a predetermined time has elapsed when an operation command signal for the claw operating cylinder 79 is input.

  Further, the plate clamping system 80 is provided with a push button type belly switch 86 that can be operated by an operator as an operation switch for operating the locking claw operation cylinder 79. This push button type belly switch 86 can be pushed not only by a hand but also by a body such as the belly. Therefore, when the push button type belly switch 86 is operated by the operator, the control device 81 outputs an operation command signal. When the operation command signal is input, the control device 81 receives the locking claw after a predetermined time has elapsed. The operation cylinder 79 is operated.

  In the stacks 21 and 22, the push button type abdominal switches 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb are provided in the plate mounting areas A1, A2, A3, A4 corresponding to the plate cylinders 41a, 41b, 42a, 42b. , 86Db. Each push button type abdominal switch 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb, 86Db is substantially the same height as the plate cylinders 41a, 41b, and is disposed on the wall surface facing the operator on the work tables 93a, 93b. ing.

  Here, the plate clamping operation by the plate clamping system 80 of the present embodiment will be described in detail.

  The operator rotates the plate cylinder 41a to shift the phase of the gap portion 72, and the corresponding printing plates 71A, 71B, 71C with respect to the respective plate mounting areas A1, A2, A3, A4 in the plate cylinder 41a. , 71D, a plate-hanging operation for locking the grip-side end portion to the gap portion 72 is performed. Then, the plate cylinder 41a is rotated once, and the printing plates 71A, 71B, 71C, 71D are wound around the outer peripheral surface of the plate cylinder 41a. Here, after the operator operates the push button type belly switch 86Aa, the operator presses the tail edge side end portion 71Ab on the outer peripheral surface of the printing plate 71A.

  When the operator operates the push button type belly switch 86Aa, the timer 83 starts operating. When the operator operates the push button type belly switch 86Aa and a predetermined time elapses, the tail end side end portion 71Ab of the printing plate 71A is inserted into the gap portion 72 by the plate clamping device 73 and is locked by the locking claw 74a. Locked. Similarly, the mounting work of the printing plates 71B, 71C, and 71D on the plate cylinder 41a is sequentially performed.

  As described above, in the plate clamping system according to the third embodiment, the push button type abdominal switch 86Aa, 86Ba, 86Ca, 86Da, 86Ab, which can be operated by the operator, as an operation switch for operating the locking claw operation cylinder 79. 86Bb, 86Cb, 86Db are provided, and the control device 81 is configured such that when each push button type abdominal switch 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb, 86Db is operated, a locking claw operation cylinder 79 is activated.

  Therefore, when the operator operates the push button type abdominal switch 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb, 86Db, the operation command signal is output, and the control device 81 receives this operation command signal. Since the latching claw actuating cylinder 79 is actuated after a lapse of a predetermined time, the operator operates the push button type abdominal switches 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb, 86Db for a predetermined time. In the meantime, the tail edge side end portion 71b of the printing plate 71 wound around the outer peripheral surfaces of the plate cylinders 41a, 41b, 42a, 42b can be pressed from the outside, and the plate cylinders 41a, 41b, 42a, 42b can be pressed. The mounting work of the printing plate 71 can be performed by one worker, and the workability can be improved.

  In the plate clamping system of the third embodiment, the push button type belly switches 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb, 86Db are almost the same height as the plate cylinders 41a, 41b, 42a, 42b, They are placed facing each other. Accordingly, the push button type abdominal switches 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb, 86Db can be operated using the body such as the operator's abdomen, and the operability can be improved.

[Fourth Embodiment]
FIG. 17 is a block diagram showing the plate clamping system of the fourth embodiment, FIG. 18 is a schematic front view showing a printing unit to which the plate clamping system is applied, and FIG. 19 is a schematic plan view showing the printing unit. . In addition, the same code | symbol is attached | subjected to the member which has the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

  In the fourth embodiment, as shown in FIGS. 17 to 19, the plate clamping system 80 is provided at the end of the printing plate 71 in which the locking claws 74 a are wound around the outer peripheral surfaces of the plate cylinders 41 a, 41 b, 42 a, 42 b. A plate clamping device 73 for locking and fastening the printing plate 71, a locking claw operating cylinder 79 as a locking claw operating device for engaging and disengaging the locking claw 74a with respect to the end portion of the printing plate 71, And a control device 81 that operates the locking claw operating cylinder 79 after a predetermined time has elapsed when an operation command signal for the claw operating cylinder 79 is input.

  Further, the plate clamping system 80 is provided with a push button type foot switch 87 that can be operated by an operator as an operation switch for operating the locking claw operation cylinder 79. This push button type foot switch 87 can be pushed by an operator with his / her foot. Therefore, when the push button type foot switch 87 is operated by the operator, the control device 81 outputs an operation command signal. When the operation command signal is input, the control device 81 receives the locking claw after a predetermined time has elapsed. The operation cylinder 79 is operated.

  In the stacks 21 and 22, the push button type foot switches 87Aa, 87Ba, 87Ca, 87Da, 87Ab, 87Bb, 87Cb are provided in the plate mounting areas A1, A2, A3, A4 corresponding to the plate cylinders 41a, 41b, 42a, 42b. , 87Db are arranged. Each push button type foot switch 87Aa, 87Ba, 87Ca, 87Da, 87Ab, 87Bb, 87Cb, 87Db is arranged on the work floors 94a, 94b on which the operator performs the plate clamping operation, and is stepped on by the operator's feet. It is possible to operate with.

  Here, the plate clamping operation by the plate clamping system 80 of the present embodiment will be described in detail.

  The operator rotates the plate cylinder 41a to shift the phase of the gap portion 72, and the corresponding printing plates 71A, 71B, 71C with respect to the respective plate mounting areas A1, A2, A3, A4 in the plate cylinder 41a. , 71D, a plate-hanging operation for locking the grip-side end portion to the gap portion 72 is performed. Then, the plate cylinder 41a is rotated once, and the printing plates 71A, 71B, 71C, 71D are wound around the outer peripheral surface of the plate cylinder 41a. Here, the operator operates the push button type foot switch 87Aa, and then presses the tail edge side end portion 71Ab on the outer peripheral surface of the printing plate 71A.

  When the operator operates the push button type foot switch 87Aa, the timer 83 starts operating. Then, when the operator operates the push button type foot switch 87Aa and a predetermined time elapses, the tail edge side end portion 71Ab of the printing plate 71A is inserted into the gap portion 72 by the plate clamping device 73 and is locked by the locking claw 74a. Locked. Similarly, the mounting work of the printing plates 71B, 71C, and 71D on the plate cylinder 41a is sequentially performed.

  As described above, in the plate clamping system according to the fourth embodiment, the push button foot disposed on the work floors 94a and 94b on which the operator performs the plate clamping operation as an operation switch for operating the locking claw operating cylinder 79. Switches 87Aa, 87Ba, 87Ca, 87Da, 87Ab, 87Bb, 87Cb, 87Db are provided, and the control device 81 operates each push button type foot switch 87Aa, 87Ba, 87Ca, 87Da, 87Ab, 87Bb, 87Cb, 87Db. The latching claw operating cylinder 79 is operated after a predetermined time has elapsed.

  Accordingly, the push button type foot switches 87Aa, 87Ba, 87Ca, 87Da, 87Ab, 87Bb, 87Cb, 87Db arranged on the work floors 94a, 94b can be operated by the operator's feet, and the operability can be improved. it can.

[Fifth Embodiment]
20 is a block diagram showing a plate clamping system according to the fifth embodiment, FIG. 21 is a schematic front view showing a printing unit to which the plate clamping system is applied, and FIG. 22 is a schematic plan view showing the printing unit. . In addition, the same code | symbol is attached | subjected to the member which has the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

  In the fifth embodiment, as shown in FIGS. 20 to 22, the plate clamping system 80 is provided at the end portion of the printing plate 71 in which the locking claws 74 a are wound around the outer peripheral surfaces of the plate cylinders 41 a, 41 b, 42 a, 42 b. A plate clamping device 73 for locking and fastening the printing plate 71, a locking claw operating cylinder 79 as a locking claw operating device for engaging and disengaging the locking claw 74a with respect to the end portion of the printing plate 71, And a control device 81 that operates the locking claw operating cylinder 79 after a predetermined time has elapsed when an operation command signal for the claw operating cylinder 79 is input.

  Further, the plate clamping system 80 is an operation switch for operating the latching claw operating cylinder 79 and is arranged in parallel with the plate cylinders 41a, 41b, 42a, 42b on the outer periphery of the plate cylinders 41a, 41b, 42a, 42b. Push button type switches 88 are provided on the safety bars 95a, 95b, 96a, 96b. The push button type switch 88 can be manually pressed by an operator. Therefore, when the push button type switch 88 is operated by the operator, the control device 81 outputs an operation command signal. When the operation command signal is input, the control device 81 operates the locking claw after a predetermined time has elapsed. The cylinder 79 is operated.

  In the stack 21, safety bars 95 a and 95 b are provided between the blanket cylinders 31 a and 31 b and the plate cylinders 41 a and 41 b to prevent the operator's hands from being caught. The safety bars 95 a and 95 b are provided at the end portions. Are fixed to the printing machine frames 91 and 92. In the stack 22, safety bars 96 a and 96 b are provided between the blanket cylinders 32 a and 32 b and the plate cylinders 42 a and 42 b to prevent the operator's hands from being caught. The safety bars 96 a and 96 b Each end is fixed to the printing machine frames 91 and 92. The safety bars 95a, 95b, 96a, 96b are pushbutton switches 88Aa, 88Ba corresponding to the plate mounting areas A1, A2, A3, A4 corresponding to the blanket cylinders 31a, 31b, 32a, 32b. , 88Ca, 88Da, 88Ab, 88Bb, 88Cb, 88Db are arranged. Therefore, the push-button switches 88Aa, 88Ba, 88Ca, 88Da, 88Ab, 88Bb, 88Cb, 88Db are safety bars 95a, 95b that face the operator in the plate mounting areas A1, A2, A3, A4. It can be operated by an operator's hand.

  Here, the plate clamping operation by the plate clamping system 80 of the present embodiment will be described in detail.

  The operator rotates the plate cylinder 41a to shift the phase of the gap portion 72, and the corresponding printing plates 71A, 71B, 71C with respect to the respective plate mounting areas A1, A2, A3, A4 in the plate cylinder 41a. , 71D, a plate-hanging operation for locking the grip-side end portion to the gap portion 72 is performed. Then, the plate cylinder 41a is rotated once, and the printing plates 71A, 71B, 71C, 71D are wound around the outer peripheral surface of the plate cylinder 41a. Here, the operator operates the push button type switch 88Aa and then presses the tail edge side end portion 71Ab on the outer peripheral surface of the printing plate 71A.

  When the operator operates the pushbutton switch 88Aa, the timer 83 starts operating. Then, when the operator operates the pushbutton switch 88Aa and a predetermined time has elapsed, the tail edge side end portion 71Ab of the printing plate 71A is inserted into the gap portion 72 by the plate clamping device 73 and is engaged by the locking claw 74a. Stopped. Similarly, the mounting work of the printing plates 71B, 71C, and 71D on the plate cylinder 41a is sequentially performed.

  As described above, in the plate clamping system of the fifth embodiment, the safety bars 95a, 95b, 96a, 96b are provided between the blanket cylinders 31a, 31b, 32a, 32b and the plate cylinders 41a, 41b, 42a, 42b. And push button switches 88Aa, 88Ba, 88Ca, 88Da, 88Ab, 88Bb, 88Cb, 88Db as control switches for operating the latching claw operating cylinder 79 on the safety bars 95a, 95b, 96a, 96b. When the pushbutton switches 88Aa, 88Ba, 88Ca, 88Da, 88Ab, 88Bb, 88Cb, 88Db are operated, the device 81 operates the locking claw operating cylinder 79 after a predetermined time has elapsed.

  Accordingly, by providing the push-button switches 88Aa, 88Ba, 88Ca, 88Da, 88Ab, 88Bb, 88Cb, 88Db on the safety bars 95a, 95b, 96a, 96b, the operator can push-button switches 88Aa, 88Ba, 88Ca, Immediately after operating 88Da, 88Ab, 88Bb, 88Cb, 88Db, the tail edge side end portion 71b of the printing plate 71 can be pressed, and the operability can be improved.

  In the above-described embodiment, the plate clamping device 73 is configured to be operated by the locking claw operating cylinder 79 as the locking claw operating device. However, the present invention is not limited to this configuration, and the locking claw operating device is a drive motor. And so on.

  In the above-described embodiment, the push button type belly switch 86, the push button type foot switch 87, and the push button type switch 88 are provided as the push button type belly switch. However, the present invention is not limited to this configuration. A push button switch that can be operated by the operator may be provided on one or both of the side surfaces on the drive side and the operation side of the printing press frames 91 and 92. The push button switch may be a sheet key or a touch panel.

  In the above-described embodiment, the newspaper offset rotary printing press P is applied as the printing press. However, the printing press may be applied to a commercial offset rotary printing press or an offset sheet-fed printing press.

P Newspaper web offset press (printer)
R paper feeding device R1 to R7 paper feeding unit I infeed device I1 to I7 infeed unit U printing device U1 to U6, U11 to U62 printing unit D web pass device D1, D2 web pass unit F folding machine F1, F2 folding unit 21, 22, 23, 24 Stack 31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b Blanket cylinder 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b Plate cylinder 51a, 51b, 52a, 52b, 53a, 53b, 54a, 54b Ink supply device 61a, 61b, 62a, 62b, 63a, 63b, 64a, 64b Dampening device 71, 71A, 71B, 71C, 71D Plate 71a Edge side 71b Edge side Edge 72 Gap 72a Cutter 72b Cutter butt 73 Plate clamping Device 74 tension bar 74a locking claw 77 compression coil spring 79 locking claw operating cylinder (locking claw operating device)
80 plate clamping system 81 control device 82, 82Aa, 82Ba, 82Ca, 82Da, 82Ab, 82Bb, 82Cb, 82Db detection switch (operation switch)
83 Timer 84, 84a, 84b Plate cylinder selection switch 85, 85a, 85b Human sensor 86, 86Aa, 86Ba, 86Ca, 86Da, 86Ab, 86Bb, 86Cb, 86Db Push button type belly switch (actuation switch)
87, 87Aa, 87Ba, 87Ca, 87Da, 87Ab, 87Bb, 87Cb, 87Db Pushbutton type foot switch (actuation switch)
88, 88Aa, 88Ba, 88Ca, 88Da, 88Ab, 88Bb, 88Cb, 88Db Pushbutton switch (actuation switch)
94a, 94b Work floor 95a, 95b, 96a, 96b Safety bar A1, A2, A3, A4 Printing plate mounting area W, W1, W2 Web (printing medium)

Claims (10)

A plate clamping device for locking the printing plate by locking a locking claw to an end portion of the printing plate wound around the outer peripheral surface of the plate cylinder;
A locking claw actuating device for engaging and disengaging the locking claw with respect to an end of the printing plate;
A control device for operating the latching claw actuating device after elapse of a predetermined time when an operation command signal of the latching claw actuating device is input;
A plate clamping system comprising:   An operation switch for operating the locking claw operating device is provided, and the control device operates the locking claw operating device after elapse of a predetermined time when the operation command signal output by operating the operation switch is input. The plate clamping system according to claim 1, wherein:   The plate clamping system according to claim 2, wherein the operation switch is a pushbutton switch that can be operated by an operator.   4. The plate clamping system according to claim 3, wherein the push button switch is disposed to face the operator at substantially the same height as the plate cylinder. 5.   4. The plate clamping system according to claim 3, wherein the push button switch is a foot switch arranged on a floor where an operator performs a plate clamping operation.   4. The plate clamping system according to claim 3, wherein a safety bar is arranged around the plate cylinder in parallel with the plate cylinder, and the pushbutton switch is arranged on the safety bar. 5.   3. The plate clamping system according to claim 2, wherein the operation switch is a detection switch for detecting a hand of an operator who presses the printing plate wound around the outer peripheral surface of the plate cylinder.   A human sensor for detecting that the worker is on the floor performing the plate clamping operation is provided, and the control device detects a worker and inputs the operation command signal for a predetermined time. The plate clamping system according to any one of claims 1 to 7, wherein the latching claw actuating device is actuated after a lapse of time.   The plate cylinder is capable of mounting a plurality of printing plates along the axial direction, and the plate clamping device is capable of individually restraining the plurality of printing plates by the locking claw, and the locking claw actuating device. The plate clamping system according to any one of claims 1 to 8, wherein the latching claws that constrain the plurality of printing plates are individually operable. An ink supply device for supplying ink;
A plate cylinder from which ink is supplied to the printing plate mounted on the outer periphery from the ink supply device;
A blanket cylinder for transferring an image of ink received from the plate cylinder to a web;
The plate clamping system according to any one of claims 1 to 9,
A printing machine comprising:

Images