JP2009202461A - Plate exchange control apparatus, printing machine, plate replacement method and plate replacing computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten time required for exchange of a plate. <P>SOLUTION: In a printing machine 1, when the plate is exchanged, plate attachment parts 37a, 37b, 37c and 37d of respective plate drums 32a, 32b, 32c and 32d are rotated in a position opposing plate exchange apparatus 35a, 35b, 35c and 35d. Further, after exchange of the plate is completed, the respective plate drums 32a, 32b, 32c and 32d are rotated so that the respective plate attachment parts 37a, 37b, 37c and 37d have a predetermined phase difference. The operation of the plate drums 32a, 32b, 32c and 32d before the plate is exchanged is carried out during washing, blanket drums 33a, 33b, 33c and 33d and the operation of the plate drums 32a, 32b, 32c and 32d after the exchange of the plate is completed is simultaneously carried out with inking. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a plate exchange control device, a printing machine, a plate exchange method, and a computer program for plate exchange that can shorten the plate exchange time.

  In general, a printing machine attaches a printing plate used for printing to a cylindrical plate cylinder that rotates about a rotation axis and performs printing. In such a printing machine, the contents to be printed are changed by replacing the printing plate attached to the plate cylinder. In exchanging the printing plate, the plate cylinder is moved to a predetermined plate exchange position, the printing plate is removed from the plate cylinder, and a new printing plate is attached to the plate cylinder. For example, in the case of a printing machine for color printing, four printing plates corresponding to printing colors K (Black), C (Cyan), M (Magenta), and Y (Yellow) are exchanged.

  In a printing machine for color printing, a plurality of printing plates are exchanged. In this case, each time each printing plate is exchanged, the corresponding plate cylinder is moved to the plate exchange position. The plurality of plate cylinders rotate with a predetermined phase difference from the other plate cylinders. Therefore, when all of the plurality of printing plates are exchanged, it is necessary to move each plate cylinder to a predetermined plate exchange position every time the printing plates are exchanged, and it takes time to exchange the printing plates.

  When replacing a plurality of printing plates, if all the plate cylinders are moved to the plate replacement position in advance at the same timing, the operation of moving the plate cylinder to the plate replacement position can be performed only once. Can be shortened. In order to realize such plate exchange, a structure in which each plate cylinder can be rotated independently at the time of plate exchange is necessary. For example, by using a phase adjusting device for a printing press as disclosed in Patent Document 1, all plate cylinders can be moved to the plate replacement position in advance at the same timing when the plate is replaced.

Japanese Patent Application Laid-Open No. 2004-351692 (0027, 0028)

  By the way, in the replacement of the printing plate, work resulting from the replacement of the printing plate, such as supply of ink to the replaced printing plate and cleaning of the blanket in the case of offset printing, is required. These operations are often performed before and after the operation of replacing the printing plate. Conventionally, when replacing the printing plate, after the work resulting from the replacement of the printing plate is completed, the plate cylinder is rotated to a predetermined plate replacement position and then the printing plate is replaced, or the plate cylinder is rotated to the printing start position. Since then, work has been carried out due to plate change. If it does in this way, time will be required for plate exchange by the time which rotates a plate cylinder to a predetermined plate exchange position, and the time which rotates a plate cylinder to a printing start position. The same applies to the method of moving all the plate cylinders to the plate exchange position in advance at the same timing.

  In this way, there is room for improvement in reducing the time required for plate replacement, whether the method of moving all the plate cylinders to the plate replacement position in advance at the same timing or the method of replacing each plate individually. . The present invention has been made in view of the above, and an object thereof is to shorten the time required for replacing the printing plate.

  In order to solve the above-described problems and achieve the object, a plate replacement control apparatus according to the present invention replaces the plate in a printing machine that prints on a recording medium using a plate cylinder to which the plate is attached. At least one of a replacement preparation operation related to preparation for replacement of the printing plate attached to the plate cylinder and a return operation related to return from replacement of the printing plate. The operation of the printing press is different from the replacement of the printing press.

  In order to solve the above-described problems and achieve the object, a plate replacement method according to the present invention is attached to the plate cylinder in a printing machine that prints on a recording medium using a plate cylinder to which the plate is attached. At least one of a replacement preparation operation related to preparation for replacement of the printing plate and a return operation related to return from replacement of the printing plate is made to overlap with an operation of the printing press different from the replacement of the printing plate. To do.

  This plate exchange control device executes the exchange preparation operation and the return operation when the operation of the printing press different from the plate exchange is being executed. As a result, the time required for the exchange preparation operation for rotating the plate cylinder to the predetermined plate replacement position and the time required for the return operation for rotating the plate cylinder to the printing start position can be shortened. You can save time.

  As a preferred aspect of the present invention, in the plate exchange control device, an exchange preparation operation relating to preparation for exchanging the printing plate attached to the plate cylinder is performed during an operation of the printing press different from the exchange of the printing plate. It is preferable that the operation of the printing machine different from the replacement of the printing plate is executed from the start of the return operation related to the return from the replacement of the printing plate.

  As a preferred aspect of the present invention, in the plate replacement method, the replacement preparation operation related to the preparation for replacement of the printing plate attached to the plate cylinder is completed during the operation of the printing press different from the replacement of the printing plate. However, it is preferable that the operation of the printing machine different from the replacement of the printing plate is executed at the start of the return operation related to the return from the replacement of the printing plate or during the return operation.

  As a result, the printing plate can be replaced immediately after the operation of the printing press that has occurred due to the replacement of the printing plate has been completed, and it has occurred due to the replacement of the printing plate immediately after the replacement of the printing plate has been completed. The operation of the printing press can be executed. As a result, the time required to rotate the plate cylinder to the predetermined plate replacement position and the time required to rotate the plate cylinder to the printing start position can be shortened, so that the time required for replacing the printing plate can be further shortened.

  As a preferred aspect of the present invention, in the plate change control device, the printing press includes a plurality of plate cylinders, and the replacement preparation operation includes a portion to which the plate is attached of each plate cylinder, Preferably, the plate plate is rotated toward the plate exchange position, and the return operation is an operation of rotating each plate cylinder whose plate has been exchanged to each print start position.

  As a preferred aspect of the present invention, in the plate replacement method, the printing press includes a plurality of the plate cylinders, and the replacement preparation operation includes a portion of the plate cylinder to which the printing plate is attached, It is desirable to rotate the plate cylinder toward the printing plate exchange position, and it is preferable that the return operation is an operation of rotating the plate cylinders after the exchange of the printing plate to the printing start positions.

  As a result, in a printing machine that replaces the printing plate after all the plate cylinders have been moved to the plate replacement position in advance at the same timing, the time required for replacing the printing plate can be shortened.

  As a preferred aspect of the present invention, in the plate exchange control device, the printing press includes a plurality of plate cylinders, and the plate is exchanged in order from the plurality of plate cylinders. , An operation relating to preparation for replacement of the printing plate attached to the plate cylinder for exchanging the printing plate first among a plurality of the plate cylinders, and the returning operation is performed at the end of the plurality of plate cylinders. It is desirable that the operation is to release a plate changing device for changing the printing plate from the plate cylinder after changing the printing plate.

  As a preferred aspect of the present invention, in the plate replacement method, the printing press includes a plurality of the plate cylinders, and the plate is replaced in order from a plurality of the plate cylinders. An operation relating to preparation for replacement of the printing plate attached to the plate cylinder, which is first replaced with the printing plate among the plurality of plate cylinders, and the return operation is the last of the printing cylinders among the plurality of plate cylinders. It is desirable that the operation is to release a plate changing device for changing the printing plate from the plate cylinder after changing the plate.

  As a result, even if the printing machine does not use the technique of exchanging the printing plates after all the plate cylinders are moved to the plate exchange position in advance at the same timing, the time required for exchanging the printing plates can be shortened.

  According to a preferred aspect of the present invention, in the plate exchange control device, the plate preparation means for attaching the plate to the plate cylinder during the operation of the printing press different from the plate exchange in the exchange preparation operation. It is preferable that the operation until the opening is completed, and in the return operation, the operation of the printing machine different from the replacement of the printing plate is started after the printing plate is attached to the plate cylinder.

  As a preferred aspect of the present invention, in the plate replacement method, in the replacement preparation operation, a plate fixing means for attaching the plate to the plate cylinder is opened during the operation of the printing press different from the replacement of the plate. It is desirable that the operation of the printing machine, which is different from the replacement of the printing plate, starts after the printing plate is mounted on the plate cylinder in the returning operation after the operation until the printing plate is completed.

  As a result, the plate can be replaced immediately after the plate is removed from the plate cylinder, and the printing press operation caused by the plate change is performed immediately after the plate is mounted on the plate cylinder. it can. As a result, the time required to rotate the plate cylinder to the predetermined plate replacement position and the time required to rotate the plate cylinder to the printing start position can be shortened, so that the time required for replacing the printing plate can be further shortened.

  In order to solve the above-described problems and achieve the object, a printing machine according to the present invention controls a plate cylinder on which a printing plate for printing on a recording medium is mounted, and an operation when the printing plate is replaced. And a plate exchange control device. Thus, when the operation of the printing press different from the replacement of the printing plate is being performed, the replacement preparation operation related to the preparation for the replacement of the printing plate is executed, so that the time required for replacement of the printing plate can be shortened.

  In order to solve the above-described problems and achieve the object, a plate exchange computer program according to the present invention causes a computer to execute the plate exchange method. According to this computer program for exchanging versions, the above-described plate exchanging method can be realized using a computer.

  The present invention can shorten the time required for plate replacement.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited by the best mode for carrying out the invention (hereinafter referred to as an embodiment). In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

(Embodiment 1)
In this embodiment, in a printing machine that prints on a recording medium using a plate cylinder to which a printing plate is attached, an exchange preparation operation related to preparation for replacement of the printing plate attached to the plate cylinder and a return from the exchange of the printing plate This is characterized in that at least one of the return operation relating to the above is overlapped with the operation of the printing press different from the replacement of the printing plate. In this embodiment, the replacement preparation operation is completed during the operation of the printing press different from the plate change, and the printing press operation different from the plate change is executed from the start of the return operation.

  FIG. 1 is a schematic diagram illustrating a printing machine including a plate exchange control device according to the first embodiment. The printing machine 1 includes a printing machine control device 10 that controls the printing machine 1. The printing machine 1 is, for example, a sheet-fed printing machine as an offset printing machine, and includes a paper feeding unit 2, a printing unit 3, and a paper discharge unit 4. The paper feeding unit 2 feeds paper (sheets) that is a set recording medium and supplies the paper to the printing unit 3 including a plurality of printing units 3a, 3b, 3c, and 3d. Each printing unit 3a, 3b, 3c, 3d has plate cylinders 32a, 32b, 32c, 32d, blanket cylinders 33a, 33b, 33c, 33d, and impression cylinders 34, and offset printing is performed on the supplied paper. To do.

  For example, if the printing unit 3 is a printing machine for color printing, it has a configuration in which four printing units 3a, 3b, 3c, and 3d corresponding to K, C, M, and Y printing colors are connected. The paper is conveyed from the paper feeding unit 2 to the printing unit 3 and the paper discharge unit 4 by the impression cylinder 34, the intermediate cylinder 30, a chain gripper, and the like.

  A printing plate is mounted on the outer periphery of the plate cylinders 32a, 32b, 32c, and 32d, and ink is supplied from the ink supply unit. A printed image with ink is formed on the plate. The print image is transferred to the blanket cylinders 33a, 33b, 33c, and 33d, and then transferred to paper. The impression cylinder 34 presses the conveyed paper against the blanket cylinders 33a, 33b, 33c, and 33d, thereby transferring the print image onto the paper. The paper printed by all the printing units 3 a, 3 b, 3 c, 3 d is sent to the paper discharge unit 4. The paper discharge unit 4 stacks the papers printed by the printing unit 3.

  A printing plate is wound around the outer periphery of the plate cylinders 32a, 32b, 32c, and 32d. A plate cylinder 32d shown in FIG. 1 shows a state where the printing plate 36 is replaced for convenience. Plate attaching portions 37a, 37b, 37c, and 37d to which the printing plates are attached are provided on the outer peripheral portions of the plate cylinders 32a, 32b, 32c, and 32d. The plate attachment portions 37a, 37b, 37c, and 37d are concave portions formed in parallel with the axial direction. The plate attachment portions 37a, 37b, 37c, and 37d are provided with a vise as a plate fixing means that holds both ends of the plate and attaches the plate to the outer peripheral portions of the plate cylinders 32a, 32b, 32c, and 32d. . When a printing plate is attached to the plate cylinders 32a, 32b, 32c, and 32d, the vise that first holds the end of the printing plate is called a bite vise, and after the bite vise holds the plate, the bite vise The vise that holds the end opposite to the end that is gripped is called the bottom vise.

  When changing the content to be printed, replace the printing plate. The printing machine 1 includes plate changing devices 35a, 35b, 35c, and 35d in the respective printing units 3a, 3b, 3c, and 3d, and can automatically change the printing plates. In the printing press 1, the phases of the plate cylinders 32a, 32b, 32c, and 32d are shifted during printing. This means that the plate attachment portions 37a, 37b, 37c, and 37d of the respective plate cylinders 32a, 32b, 32c, and 32d rotate with a predetermined center angle (with a predetermined phase difference). In the present embodiment, when exchanging the printing plates, all the plate cylinders 32a, 32b, 32c, and 32d are rotated to the corresponding plate changing positions (plate changing positions). Thus, the phases of the respective plate cylinders 32a, 32b, 32c, and 32d are aligned. When the respective plate cylinders 32a, 32b, 32c, 32d are rotated to the respective plate change positions, the respective plate cylinders 32a, 32b, 32c, 32d are used with the respective plate change devices 35a, 35b, 35c, 35d. At the same time, the plates are automatically replaced.

  Here, the plate exchange position is a position where the plate exchange devices 35a, 35b, 35c, and 35d are disposed. When the printing plate is exchanged, the plate attachment portions 37a of the respective plate cylinders 32a, 32b, 32c, and 32d, The plate cylinders 32a, 32b, 32c, and 32d rotate so that the plates 37b, 37c, and 37d move to positions where the plate changers 35a, 35b, 35c, and 35d are disposed. In FIG. 1, for convenience, only the plate cylinder 32d is in the plate replacement position and the printing plate 36 is replaced. However, as described above, all the plate cylinders 32a, 32b, 32c, and 32d are replaced. Rotate to each plate change position to change the plate. Next, the printing press control apparatus 10 will be described.

  The printing press control apparatus 10 controls the operation of the printing press 1 and executes the plate exchange method according to the present embodiment. As described above, the printing press control apparatus 10 functions as a plate exchange control apparatus according to the present embodiment. The printing press control apparatus 10 is a computer, and includes an input / output unit (I / O) 11, a processing unit 12, and a storage unit 13. The printing press control apparatus 10 may be configured using a so-called personal computer, or may be configured by combining a CPU (Central Processing Unit) and a memory.

  The processing unit 12 controls the operation of the printing press 1 by sending a control signal to the control target of the printing press 1 via the input / output unit 11, and information used for controlling the printing press 1 from the sensors of the printing press 1. And information on the status of the printing press 1 is received. Information used for controlling the printing press 1 and information related to the status of the printing press 1 are sent to the processing unit 12 of the printing press control apparatus 10 in the form of electrical signals. The processing unit 12 is constituted by a CPU, and sequentially reads and interprets a sequence of instructions called a program (computer program) existing on the storage unit 13, and moves or processes data according to the result.

  Note that the processing unit 12 may be realized by dedicated hardware. Further, a computer program for realizing the function of the processing unit 12 is recorded on a computer-readable recording medium, and the computer program recorded on the recording medium is read into the computer system and executed, thereby executing this embodiment. The processing procedure of the plate exchange method may be executed. The “computer system” here includes an OS and hardware such as peripheral devices.

  The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a recording device such as a hard disk built in a computer system. Furthermore, “computer-readable recording medium” means that a computer program is dynamically held for a short time, like a communication line when a computer program is transmitted via a communication line such as the Internet or a telephone line. What is held, and what holds a computer program for a certain period of time, such as a volatile memory inside a computer system serving as a server or a client in that case. Further, the computer program may be for realizing a part of the above-described functions, and even if the functions described above can be realized in combination with a computer program already recorded in the computer system. Good.

  The plate exchange method according to the present embodiment can be realized by executing a computer program prepared in advance on a computer such as a personal computer or a workstation. This computer program can be distributed via a communication line such as the Internet. The computer program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk (FD), a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. May be.

  The processing unit 12 includes a control condition determination unit 12a, a maintenance operation control unit 12b, a plate exchange control unit 12c, and a print control unit 12d. The function of the plate exchange device according to the present embodiment is realized by at least the plate exchange control unit 12c. Whether the control condition determination unit 12a executes predetermined control on the printing press 1 from an electrical signal regarding the state of the printing press 1 acquired via the input / output unit 11 or a control signal for controlling the operation of the printing press 1. Determine whether or not. The maintenance operation control unit 12b controls operations related to maintenance of the printing press 1, such as cleaning of the blanket cylinders 33a, 33b, 33c, and 33d when the printing plate is replaced and cleaning of the ink supply system.

  The plate exchange control unit 12c controls operations related to plate exchange. The operations related to the exchange of the printing plate include, for example, an operation of moving the respective plate cylinders 32a, 32b, 32c, and 32d to the respective plate exchange positions, and the removal and attachment of the printing plate to the plate exchange devices 35a, 35b, 35c, and 35d. For example. The print control unit 12d controls operations related to printing by the printing press 1. The operation related to printing by the printing machine 1 is, for example, inking after replacing the printing plate, operation of the paper feeding unit 2, and the like.

  A control panel 14 serving as output means is connected to the input / output unit 11 of the printing press control apparatus 10. The control panel 14 is provided with a display 14D as display means and an input means 14C for inputting a command for controlling the operation of the printing press 1. The storage unit 13 is a volatile memory such as a RAM (Random Access Memory), a non-volatile memory such as a ROM (Read Only Memory), a read only such as a hard disk device, a magneto-optical disk device, or a CD-ROM. Recording medium capable of recording, or a combination thereof. The storage unit 13 stores a computer program and data for realizing the plate exchange method according to the present embodiment, or a control computer program and control data for realizing control of the printing press 1. The processing unit 12 uses these computer programs and data to realize the plate exchange method according to the present embodiment and to control the operation of the printing machine 1.

  FIG. 2 is a schematic diagram showing a plate cylinder driving mechanism. The printing press 1 shown in FIG. 1 includes four plate cylinders 32a, 32b, 32c, and 32d. However, since these drive mechanisms are the same, in the following description, the plate cylinders 32a, 32b, 32c, and 32d are referred to for convenience. Also referred to as a plate cylinder 32. The plate cylinder 32 is driven by the main motor 50. The printing machine 1 shown in FIG. 1 drives four plate cylinders 32a, 32b, 32c, and 32d with one main electric motor 50 through a power transmission mechanism such as a gear train and a chain. The printing press control apparatus 10 controls the main motor 50 via the main motor controller 54.

  As described above, the printing press 1 shown in FIG. 1 rotates the plate cylinders 32a, 32b, 32c, and 32d to the respective plate replacement positions and simultaneously replaces the printing plates. In this case, the phases of the plate cylinders 32a, 32b, 32c, and 32d that are shifted from each other during printing are aligned. On the other hand, when the replacement of the printing plate is completed and the plate replacement operation returns to a state where printing can be performed, the plate cylinders 32a, 32b, 32c, and 32d that are aligned in the replacement of the printing plate are required for printing. Returned to the phase difference. For this reason, in addition to driving the plate cylinders 32a, 32b, 32c, and 32d by the main motor 50, a drive mechanism for the plate cylinders that independently rotates the respective plate cylinders 32a, 32b, 32c, and 32d is required.

  In the present embodiment, the plate cylinder 32 is rotated separately from the drive of the plate cylinder 32 by the main motor 50 using the plate cylinder drive mechanism using the plate cylinder drive motor 51 and the planetary gear device 40. The printing press control apparatus 10 controls the plate cylinder drive motor 51 via the plate cylinder drive motor controller 55. Plate cylinder drive motors 51, plate cylinder drive motor controllers 55, plate cylinder drive motors 51, and planetary gear units 40 are used as many as the number of plate cylinders 32. The driving force generated by the main motor 50 is input to the plate cylinder 32 via the input gear 52 and the planetary gear unit 40, and rotates the plate cylinder 32. The planetary gear device 40 includes a ring gear 41, a pinion gear 42, a carrier 43, a sun gear 44, and a housing 46.

  The ring gear 41 is formed on the inner peripheral portion of the housing 46 of the planetary gear device 40. A plurality of pinion gears 42 are arranged inside the ring gear 41 and mesh with each other. The plurality of pinion gears 42 are arranged at predetermined intervals in the circumferential direction of the ring gear 41. Each of the plurality of pinion gears 42 has a rotation shaft attached to the carrier 43 and is supported by the carrier 43 through the rotation shaft. The pinion gear 42 rotates around the rotation axis. Sun gears 44 are disposed inside the plurality of pinion gears 42, and the sun gears 44 mesh with the respective pinion gears 42.

  The output shaft 53 of the plate cylinder drive motor 51 is connected to the sun gear 44, and both the output shaft 53 and the sun gear 44 rotate. The carrier 43 is connected to the plate cylinder 32, and both the carrier 43 and the plate cylinder 32 rotate. A power transmission gear 45 is provided on the outer peripheral portion of the housing 46. The power transmission gear 45 meshes with the input gear 52, and the driving force generated by the main motor 50 is input to the planetary gear device 40 via the input gear 52 and the power transmission gear 45.

  When the plate cylinder 32 is rotated by the driving force of the main motor 50, for example, the plate cylinder is driven so that the sun gear 44 rotates at the same rotational direction as the rotational direction of the power transmission gear 45 and at the same rotational angular velocity as the power transmission gear 45. The electric motor 51 is rotated. That is, the power transmission gear 45 and the sun gear 44 are rotated in synchronization. As a result, the power transmission gear 45 (that is, the casing 46), the sun gear 44, and the carrier 43 rotate in the same direction and at the same rotational angular velocity, so that the plate cylinder 32 rotates with the driving force of the main motor 50. Further, when the plate cylinder 32 is rotated by the driving force of the main motor 50, the sun gear 44 may be fixed by generating a braking force in the plate cylinder driving motor 51. As a result, the carrier 43 rotates at a different speed in the same direction as the rotation direction of the power transmission gear 45, so that the plate cylinder 32 is rotated by the driving force of the main motor 50.

  When the plate cylinder 32 is rotated separately from the main motor 50, that is, when the plate cylinders 32 a, 32 b, 32 c, and 32 d are independently rotated at the time of replacing the printing plate, the sun gear 44 is rotated by the plate cylinder drive motor 51. For example, when the plate cylinder drive motor 51 is rotated and the sun gear is rotated while the main motor 50 is stopped and the ring gear 41 is stopped, the carrier 43 is rotated, so the plate cylinder 32 is rotated. Each of the plate cylinders 32a, 32b, 32c, and 32d is independently rotated by a drive mechanism of the plate cylinder provided in each. Therefore, it is possible to align the phases of the plate cylinders 32a, 32b, 32c, and 32d that are shifted from each other during printing, or to return to the phase difference required during printing. Next, a plate replacement method according to this embodiment will be described.

  FIG. 3 is a flowchart illustrating a procedure of the plate exchange method according to the first embodiment. FIG. 4A is a timing chart illustrating the procedure of the plate exchange method according to the first embodiment. FIG. 4B is a timing chart illustrating the procedure of the plate exchange method according to the comparative example. FIGS. 4-3 and 4-4 are schematic diagrams for explaining the rotation of the plate cylinder in the plate replacement method according to the first embodiment. FIG. 5A is an explanatory diagram illustrating a relationship between the operation speed of the printing press and time in the procedure of the plate exchange method according to the first embodiment. FIG. 5B is an explanatory diagram illustrating the relationship between the operation speed of the printing press and time in the procedure of the plate exchange method according to the comparative example. The plate exchange method according to the present embodiment can be realized by the printing press control apparatus 10 described above.

  When the printing plate of the printing press 1 is exchanged using the plate exchange method according to the present embodiment, in step S101, the control condition determination unit 12a of the processing unit 12 included in the printing press control apparatus 10 performs the printing plate exchange. It is determined whether or not the batch operation mode has been selected. The collective work mode is a work mode in which operations related to the exchange of the printing plate and the exchange operation of the printing plate are automatically executed in a lump. For example, in the present embodiment, the collective work mode includes (1) cleaning the blanket cylinders 33a, 33b, 33c, and 33d (hereinafter referred to as the blanket cylinder 33 for convenience of explanation) shown in FIG. 1, and (2) all the plate cylinders 32a. , 32b, 32c, 32d are moved to the plate exchange position (in-phase), (3) plate is removed, (4) a new plate is attached, and (5) plate is exchanged to enable printing. (6) Inking a new printing plate, (7) Trial printing.

  When it is determined No in step S101, that is, when the control condition determination unit 12a determines that the batch operation mode is not selected at the time of replacing the printing plate, the plate replacement method according to the present embodiment ends. If it is determined Yes in step S101, that is, if the control condition determination unit 12a determines that the batch operation mode is selected when the printing plate is replaced, the process proceeds to step S102.

  In step S102, the control condition determination unit 12a determines whether or not cleaning of the blanket cylinder 33 illustrated in FIG. 1 has been started. Here, the cleaning of the blanket cylinder 33 is performed by the maintenance operation control unit 12b of the processing unit 12 included in the printing press control apparatus 10. If it is determined No in step S102, that is, if the maintenance operation control unit 12b has not yet started cleaning the blanket cylinder 33 in the collective work mode, the control condition determination unit 12a has not yet started cleaning the blanket cylinder 33. The plate exchange method according to the present embodiment is finished. When it is determined Yes in step S102, that is, when the maintenance operation control unit 12b starts cleaning the blanket cylinder 33 in the collective work mode, the control condition determination unit 12a determines that cleaning of the blanket cylinder 33 has started, Proceed to step S103. Here, in FIGS. 4-1 and 5-1, cleaning of the blanket cylinder 33 is started at time t = 0.

  In step S103, the plate exchange control unit 12c of the processing unit 12 constituting the printing press control apparatus 10 rotates all the plate cylinders 32a, 32b, 32c, and 32d shown in FIG. , 32d is moved to the plate exchange position. This operation is an operation of rotating the plate attachment portions 37a, 37b, 37c, and 37d of the respective plate cylinders 32a, 32b, 32c, and 32d toward the respective plate replacement positions, which is called in-phase. In the present embodiment, the in-phase processing is a replacement preparation operation related to preparation for replacement of the printing plates attached to the plate cylinders 32a, 32b, 32c, and 32d.

  When the maintenance operation control unit 12b starts cleaning the blanket cylinder 33, the plate exchange control unit 12c executes the same phase. In other words, the blanket cylinder 33 is cleaned during the phase shifting operation. As described above, in this embodiment, the replacement preparation operation (that is, in-phase) is overlapped with the operation of the printing press 1 different from the replacement of the printing plate. Thereby, the time required for replacing the printing plate can be shortened. Here, in the present embodiment, the cleaning of the blanket cylinder 33 corresponds to the operation of the printing press 1 different from the replacement of the printing plate.

  FIG. 4-3 shows an operation in which all the plate cylinders 32a, 32b, 32c, and 32d are rotated and phased. In this phase conversion, the plate exchange control unit 12c controls the plate cylinder drive motor 51 via the plate cylinder drive motor controller 55 shown in FIG. 2, and the plate cylinders 32a, 32b, 32c, and 32d are independently controlled. Rotate. In the example shown in FIG. 4C, the plate attachment portion 37a of the plate cylinder 32a is at a position facing the plate replacement position Ex1. That is, the plate cylinder 32a is rotated to the plate replacement position Ex1. The plate attachment portions 37b, 37c, and 37d of the plate cylinders 32b, 32c, and 32d are not positioned to face the plate replacement positions Ex2 to Ex4, and the plate cylinders 32b to 32d rotate toward the plate replacement positions Ex2 to Ex4. It is a state in the middle of being.

  In the example shown in FIG. 4C, the plate cylinders 32b, 32c, and 32d are rotated toward the plate exchange positions Ex2, Ex3, and Ex4. However, the plate cylinder 32b is completely rotated to the plate exchange position Ex2. ing. In the present embodiment, in the same phase, the plate cylinders 32a, 32b, 32c, and 32d rotate in directions in which the rotation distances to the plate exchange positions Ex1, Ex2, Ex3, and Ex4 are the shortest. The rotation of the respective plate cylinders 32a, 32b, 32c, and 32d is completed so that the respective plate attachment portions 37a, 37b, 37c, and 37d are positioned to face the respective plate replacement positions Ex1, Ex2, Ex3, and Ex4. At that point, the in-phase is complete.

  When the plate exchange control unit 12c starts phase inversion, the process proceeds to step S104. In step S104, the control condition determination unit 12a determines whether or not the cleaning of the blanket cylinder 33 has been completed and the operation of the plate cylinder 32, that is, whether or not the same phase has been completed. After the cleaning of the blanket cylinder 33 is completed and the plate cylinders 32a, 32b, 32c, and 32d have not been rotated to the respective plate replacement positions Ex1, Ex2, Ex3, and Ex4, the plate is replaced. This is because cannot be executed.

  When it is determined No in step S104, that is, either the control condition determination unit 12a has not finished cleaning the blanket cylinder 33 or has not completed the phase inversion operation of the plate cylinder 32. If it is determined that, it proceeds to step S105. And until it determines with Yes by step S104, the cleaning operation | movement of the blanket cylinder 33 by the maintenance operation | movement control part 12b, or the phase-shifting operation | movement of the plate cylinder by the plate exchange control part 12c is continued.

  If it is determined as Yes in step S104, that is, if the control condition determination unit 12a determines that the cleaning of the blanket cylinder 33 has been completed and the phased operation of the plate cylinder 32 has been completed, the process proceeds to step S106. move on. Step S106 is a plate exchange (plate exchange), and the plate exchange control unit 12c drives the plate exchange devices 35a, 35b, 35c, and 35d shown in FIG. 1, and all the plate cylinders 32a, 32b, 32c, The plate is exchanged simultaneously for 32d. In the exchange of the printing plate, first, the plate exchange devices 35a, 35b, 35c, and 35d remove the printing plate (old plate) that has been attached to the plate cylinders 32a, 32b, 32c, and 32d. Then, the plate changers 35a, 35b, 35c, and 35d attach a new printing plate (new plate) to the plate cylinders 32a, 32b, 32c, and 32d.

  In step S107, the control condition determination unit 12a determines whether or not the plate replacement (plate replacement) has been completed. If it is determined No in step S107, that is, if the control condition determination unit 12a determines that the plate replacement has not been completed, the process proceeds to step S108, and the plate replacement control unit 12c replaces the plate. continue. If it is determined Yes in step S107, that is, if the control condition determining unit 12a determines that the replacement of the printing plate has been completed, the process proceeds to step S109.

  In step S109, the plate exchange control unit 12c returns the plate cylinders 32a, 32b, 32c, and 32d to the phase during printing. This operation is called in-phase cancellation. In step S109, along with the cancellation of the phase, the printing control unit 12d of the processing unit 12 constituting the printing press control apparatus 10 drives the ink supply system of the printing press 1 shown in FIG. , 32c, 32d, inking is performed on the new plates.

  In the present embodiment, the in-phase cancellation is a return operation related to the return from the replacement of the printing plates attached to the plate cylinders 32a, 32b, 32c, and 32d to the state in which printing is possible. When the in-phase cancellation is started, the print control unit 12d performs inking on the new plates attached to the plate cylinders 32a, 32b, 32c, and 32d. In other words, inking is being performed during the phase cancellation. As described above, in this embodiment, the return operation (that is, the same phase cancellation) is overlapped with the operation of the printing press 1 different from the replacement of the printing plate. Thereby, the time required for replacing the printing plate can be shortened. Here, in the present embodiment, inking corresponds to the operation of the printing press 1 different from the replacement of the printing plate.

  FIG. 4-4 illustrates an operation in which all the plate cylinders 32a, 32b, 32c, and 32d are rotated and the in-phase cancellation is executed. In releasing the phase, the plate exchange control unit 12c controls the plate cylinder driving motor 51 via the plate cylinder driving motor controller 55 shown in FIG. 2 so that the plate cylinders 32a, 32b, 32c, and 32d are independent. Rotate. Then, the phases of the plate cylinders 32a, 32b, 32c, and 32d are adjusted so that the plate cylinders 32a, 32b, 32c, and 32d rotate at a predetermined rotation angle necessary for printing.

  For example, as shown in FIG. 4-4, the plate replacement control unit 12c is configured so that the plate mounting portions 37a, 37b, 37c, and 37d face the predetermined printing positions Ps1, Ps2, Ps3, and Ps4, respectively. Each plate cylinder 32a, 32b, 32c, 32d is rotated. During printing, the plate cylinders 32a, 32b, 32c, and 32d rotate while maintaining this state. The phase cancellation is completed when the plate attachment portions 37a, 37b, 37c, and 37d face the predetermined printing positions Ps1, Ps2, Ps3, and Ps4, respectively.

  As described above, in the present embodiment, the replacement preparation operation related to the preparation for replacement of the printing plates attached to the plate cylinders 32a, 32b, 32c, and 32d, and the return related to the return from the replacement of the printing plates to the printable state. Both the operation and the operation of the printing press are different from the replacement of the printing plate. In the example shown in FIG. 4A and FIG. 5A, cleaning of the blanket cylinder 33 (operation of the printing press different from the replacement of the printing plate) is started at time t = 0 and phased (preparation operation for replacement). ) Is started, and the phase inversion is completed at time t = t0 during which the blanket cylinder 33 is being cleaned. Then, after the cleaning of the blanket cylinder 33 is finished at t = t1, the exchange of the printing plate (plate exchange) is started. In addition, at the time t = t2, in-phase cancellation (return operation) is started, and inking (operation of the printing press different from the plate change) is started. The phase cancellation is completed at time t = t3 during inking.

  FIGS. 4-2 and 5-2 are comparisons of the present embodiment, in which printing is performed from the replacement preparation operation regarding the preparation for replacement of the printing plates attached to the plate cylinders 32a, 32b, 32c, and 32d and the replacement of the printing plates. This is an example in which the return operation related to the return to a possible state is not duplicated with the operation of the printing press different from the replacement of the printing plate. In the example shown in FIGS. 4-2 and 5-2, cleaning of the blanket cylinder 33 (operation of the printing machine different from the plate change) is started at time t = 0, and the blanket cylinder 33 is started at time t = t1s. Washing is complete. Then, phase cleaning is started after the cleaning of the blanket cylinder 33 is completed, and plate replacement (plate replacement) is started after phase completion is completed at time t = t1f. After the replacement of the printing plate is completed at time t = t2s, the in-phase cancellation is started, and after the in-phase cancellation is completed at time t = t2f, inking is started.

  The time tex required for the replacement of the printing plate is the sum of the time tp required for the replacement preparation operation, the time te required for the replacement of the printing plate, and the time tr required for the return operation. In the comparative example, the time tex required for exchanging the printing plates is the time required for the same phase, that is, the time tp (= t1f−t1s) required for the exchange preparation operation, and the time te (= t2s) required for exchanging the printing plates. -T1f) and the time required for canceling the in-phase, that is, the time tr (t2f-t2s) required for the return operation.

  On the other hand, in the present embodiment, the replacement preparation operation and the return operation overlap with the operation of the printing press different from the plate change, so that the time tp (= t0 = t1f−t1s) required for the replacement preparation operation and the return operation are reduced. The required time tr (= t3-t2 = t2f-t2s) can be shortened. Therefore, in this embodiment, the time tex required for replacing the printing plate is only the time te (= t2s−t1f) required during the replacement of the printing plate. As described above, in this embodiment, the time tex required for replacing the printing plate can be shortened by t1f−t1s + t2f−t2s as compared with the comparative example.

  In this embodiment, both the replacement preparation operation and the return operation are overlapped with the operation of the printing press different from the plate replacement. However, at least one of the replacement preparation operation and the return operation is the plate replacement. It may overlap with the operation of different printing presses. Even in this case, the time required for exchanging the printing plates can be shortened by the overlap. Further, as described above, in the present embodiment, when the replacement preparation operation and the return operation are overlapped with the operation of the printing press different from the replacement of the printing plate, the replacement preparation operation and the return operation are performed in the printing plate in the present embodiment. It is completely included in the operation of the printing press that is different from the replacement (completely overlapping). However, the present invention is not limited to this, and a part of the replacement preparation operation and the return operation may overlap with the operation of the printing press different from the replacement of the printing plate. Even in this case, the time required for exchanging the printing plates can be shortened by the overlap.

  FIG. 6 is an explanatory diagram showing an example of the contents of operations executed during the replacement of the printing plate in the printing press according to the present embodiment. In the present embodiment, the operation (plate replacement operation) executed during the replacement of the printing plate is an operation from the end of the in-phase operation to the start of the in-phase cancellation, and M1 (numbing out) in FIG. To M19 (plate changer removal). The time required for the plate exchange operation is tex.

  In the present embodiment, among the plate replacement operations, M1 (buckling) and M2 (old plate lifting and lowering) may be included in the replacement preparation operation related to preparation for replacing the printing plate. Thus, for example, during the cleaning of the blanket cylinder 33, which is an operation of the printing press different from the replacement of the printing plate, the bite vise, which is a plate fixing means for attaching the printing plate to the plate cylinder 32, is released (opened). Can be completed. As a result, the time required for replacing the printing plate can be further shortened by the time tps required for M1 (buckling) and M2 (lifting and lowering the old plate).

  Further, in the present embodiment, M19 (release plate changer) may be included in the return operation among the plate change operations. In this way, for example, after the plate is attached to the plate cylinder, that is, after the M18 plate rewinding is completed, inking, which is an operation of the printing press different from the replacement of the plate, can be started. As a result, the time required for replacing the printing plate can be further shortened by the time tpf required for M19 (plate changer removal). Of the plate replacement operations, M1 (sticking out) and M2 (uplifting and lowering the old plate) are included in the replacement preparation operation related to the preparation for replacing the printing plate, and M19 (plate changer removal) is included in the return operation. In this case, the time required for the plate exchange operation is tex1 (= tex-tps-tpf).

  As described above, in the present embodiment, in a printing machine that prints on a recording medium using a plate cylinder to which a printing plate is attached, the replacement preparation operation related to the preparation for replacement of the printing plate attached to the plate cylinder and the replacement of the printing plate. At least one of the return operations related to the return of the printer is overlapped with the operation of the printing press different from the replacement of the printing plate. As described above, when the operation of the printing press different from the replacement of the printing plate is being performed, the replacement preparation operation for rotating the plate cylinder to a predetermined plate replacement position is performed by performing the replacement preparation operation or the return operation. The time required and the time required for the return operation for rotating the plate cylinder to the printing start position can be shortened. As a result, the time required for replacement of the printing plate can be shortened by the time required for the replacement preparation operation and the return operation.

(Embodiment 2)
The second embodiment is substantially the same as the first embodiment, but the operation of rotating the portion of the plurality of plate cylinders to which the plate cylinder of the plate cylinder to be replaced first is attached to the plate exchange position is replaced. This is a preparatory operation, and the difference is that the operation of rotating the plate cylinder whose plate was changed last among the plurality of plate cylinders to its printing start position is the return operation. Other configurations are the same as those of the first embodiment.

  FIG. 7 is a flowchart showing the procedure of the plate exchange method according to the second embodiment. FIG. 8 is a timing chart showing the procedure of the plate exchange method according to the second embodiment. The plate replacement method according to the present embodiment can be realized by the printing press control apparatus 10 (see FIG. 1) according to the first embodiment. The plate replacement method according to the second embodiment is not applied to a printing machine that executes phase inversion at the time of plate replacement described in the first embodiment, but is applied to a printing machine that replaces printing plates in order from a plurality of plate cylinders. . In the following description, the printing press 1 shown in FIG. 1 does not include the plate cylinder driving mechanism shown in FIG. 2, and all the plate cylinders 32a, 32b, 32c, and 32d are driven by a single main motor. When replacing the printing plate, the main motor drives the plate cylinders 32a, 32b, 32c, and 32d sequentially.

  Steps S201 and S202 of the plate exchange method according to the present embodiment are the same as steps S101 and S102 (see FIG. 3) of the plate exchange method according to the first embodiment, and thus description thereof is omitted. When it is determined Yes in step S202, that is, when the maintenance operation control unit 12b starts cleaning the blanket cylinder 33 in the collective work mode, the control condition determination unit 12a determines that cleaning of the blanket cylinder 33 has started, Proceed to step S203. Here, in FIG. 8, the cleaning of the blanket cylinder 33 is started at time t = 0.

  In step S203, the plate exchange control unit 12c shown in FIG. 1 first selects a plate cylinder (first plate cylinder, for example, a plate cylinder) from among the plurality of plate cylinders 32a, 32b, 32c, and 32d. An operation relating to preparation for replacement of the printing plate attached to 32a) is executed. This operation is the first plate cylinder replacement preparation operation (E1 in FIG. 8). For example, the first plate cylinder replacement preparatory operation E1 is the cusping (M1) and the old plate lifting and lowering (M2) shown in FIG. 6 for the first plate cylinder.

  When the maintenance operation control unit 12b starts cleaning the blanket cylinder 33, the plate exchange control unit 12c executes the first plate cylinder replacement preparation operation E1. That is, during the operation of the first plate cylinder replacement preparatory operation E1, the blanket cylinder 33 is cleaned. Thus, in the present embodiment, the first plate cylinder replacement preparation operation E1 is overlapped with the operation of the printing press different from the plate replacement. As a result, the time required for replacing the printing plate can be shortened by the amount of overlap. Here, in the present embodiment, the cleaning of the blanket cylinder 33 corresponds to the operation of the printing press different from the replacement of the printing plate.

  When the plate exchange control unit 12c starts the first plate cylinder exchange preparation operation E1, the process proceeds to step S204. In step S204, the control condition determination unit 12a determines whether or not the cleaning of the blanket cylinder 33 has ended and the first plate cylinder replacement preparation operation E1 has ended. This is because, after the cleaning of the blanket cylinder 33 is finished, the exchange of the printing plate can be executed only after the first plate cylinder exchange preparation operation E1 is finished.

  If it is determined No in step S204, that is, the control condition determination unit 12a has either not finished cleaning the blanket cylinder 33 or has not completed the first plate cylinder replacement preparatory operation E1. If it is determined that there is one, the process proceeds to step S205. Then, the blanket cylinder 33 is cleaned by the maintenance operation control unit 12b or the first plate cylinder replacement preparation operation E1 is continued by the plate replacement control unit 12c until it is determined Yes in step S204.

  If it is determined Yes in step S204, that is, if the control condition determination unit 12a determines that the cleaning of the blanket cylinder 33 has been completed and the first plate cylinder replacement preparation operation E1 has been completed, The process proceeds to S206. Step S206 is plate change (plate change), and the plate change control unit 12c drives the plate changer 35a shown in FIG. 1 to change the plate with respect to the plate cylinder 32a (plate change 1). . In the plate exchange 1, first, the plate exchange device 35a removes the printing plate (old plate) that has been attached to the plate cylinder 32a so far. Then, the plate changer 35a attaches a new printing plate (new plate) to the plate cylinder 32a. The plate exchange 1 is between time t = t1 and t2 in FIG.

  When the exchange of the printing plate with respect to the plate cylinder 32a is completed, the plate cylinder 32a is returned to a state in which printing is possible (first return operation, R1 in FIG. 8). This is, for example, the plate changer removal (M19) shown in FIG. 6, and the plate changer 35a is detached from the plate cylinder 32a. The first return operation R1 is between time t = t2 and t3 in FIG. When the first return operation R1 is completed, an operation related to preparation for replacement of the printing plate attached to the plate cylinder (second plate cylinder, for example, the plate cylinder 32b) to be replaced next is executed. This operation is the second plate cylinder replacement preparation operation (E2 in FIG. 8). The second plate cylinder replacement preparatory operation E2 is between time t = t3 and t4 in FIG.

  When the second plate cylinder replacement preparatory operation E2 is completed, the plate replacement control unit 12c drives the plate replacement device 35b shown in FIG. 1 to replace the printing plate with respect to the plate cylinder 32b (plate replacement 2). . In the plate exchange 2, first, the plate exchange device 35b removes the printing plate (old plate) that has been attached to the plate cylinder 32b so far. Then, the plate changer 35b attaches a new printing plate (new plate) to the plate cylinder 32b. The plate exchange 2 is between time t = t4 and t5 in FIG. Thereafter, the second return operation R2 (t = t5 to t6), the third plate cylinder replacement preparation operation E3 (t = t6 to t7), the replacement of the printing plate with respect to the plate cylinder 32c (plate replacement 3, t = t7) To t8), the third return operation R3 (t = t8 to t9), the fourth plate cylinder replacement preparatory operation E4 (t = t9 to t10), the plate change to the plate cylinder 32d (plate change 4, t = T10 to t11) are executed.

  In step S207, the control condition determination unit 12a determines whether or not the plate replacement (plate replacement) has been completed for all the plate cylinders. When it is determined No in step S207, that is, when the control condition determination unit 12a determines that the plate replacement has not been completed for all the plate cylinders, the process proceeds to step S208, and the plate replacement control unit 12c. Will continue to replace the plates. If it is determined Yes in step S207, that is, if the control condition determining unit 12a determines that the plate replacement has been completed for all the plate cylinders, the process proceeds to step S209.

  In step S209, the plate exchange control unit 12c restores the plate cylinder 32d, that is, the plate cylinder having the last exchanged plate to a printable state (fourth return operation, R4 in FIG. 8). This is, for example, the plate changer removal (M19) shown in FIG. 6, and the plate changer 35d is disengaged from the plate cylinder 32d (that is, the plate changer 35d is released from the plate cylinder 32d). The fourth return operation R4 is after time t = t11 in FIG. In step S209, together with the fourth return operation R4, the print control unit 12d drives the ink supply system of the printing machine 1 shown in FIG. 1 and is attached to the respective plate cylinders 32a, 32b, 32c, 32d. Ink is applied to a new plate (printer operation different from plate change). As described above, in the present embodiment, the fourth return operation R4 is overlapped with the operation of the printing press different from the replacement of the printing plate. As a result, the time required for replacing the printing plate can be shortened by the amount of overlap. Here, in this embodiment, inking corresponds to the operation of the printing press different from the replacement of the printing plate.

  As described above, in the present embodiment, in a printing machine that prints on a recording medium using a plate cylinder to which a printing plate is attached, the replacement preparation operation related to the preparation for replacement of the printing plate attached to the plate cylinder and the replacement of the printing plate. At least one of the return operations related to the return of the printer is overlapped with the operation of the printing press different from the replacement of the printing plate. As described above, when the operation of the printing press different from the replacement of the printing plate is being performed, the replacement preparation operation for rotating the plate cylinder to a predetermined plate replacement position is performed by performing the replacement preparation operation or the return operation. The time required and the time required for the return operation for rotating the plate cylinder to the printing start position can be shortened. As a result, even in a printing machine that replaces printing plates in order from a plurality of plate cylinders, the time required for replacing the printing plates can be reduced by the time required for the replacement preparation operation and the return operation.

  As described above, the plate exchange control device, the printing machine, the plate exchange method, and the plate exchange computer program according to the present invention are useful for exchanging the printing plate used when printing on the recording medium in printing. In particular, it is suitable for shortening the time required for replacing the printing plate.

1 is a schematic diagram illustrating a printing system including a plate exchange control device according to a first embodiment. It is a schematic diagram which shows the drive mechanism of a plate cylinder. 3 is a flowchart illustrating a procedure of a plate exchange method according to the first embodiment. 3 is a timing chart illustrating a procedure of a plate exchange method according to the first embodiment. It is a timing chart which shows the procedure of the plate exchange method which concerns on a comparative example. 6 is a schematic diagram illustrating rotation of a plate cylinder in the plate replacement method according to Embodiment 1. FIG. 6 is a schematic diagram illustrating rotation of a plate cylinder in the plate replacement method according to Embodiment 1. FIG. FIG. 5 is an explanatory diagram illustrating a relationship between an operation speed of the printing press and time in the procedure of the plate exchange method according to the first embodiment. It is explanatory drawing which shows the relationship between the operating speed of a printing press in the procedure of the plate exchange method which concerns on a comparative example, and time. FIG. 5 is an explanatory diagram illustrating an example of the contents of operations executed during replacement of a printing plate in the printing press according to the present embodiment. 10 is a flowchart illustrating a procedure of a plate exchange method according to the second embodiment. 6 is a timing chart showing a procedure of a plate exchange method according to the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printing machine 2 Paper feed part 3 Printing part 3a, 3b, 3c, 3d Printing unit 4 Paper discharge part 10 Printing machine control apparatus 11 Input / output part 12 Processing part 12a Control condition judgment part 12b Maintenance operation control part 12c Plate exchange control part 12d printing control unit 13 storage unit 30 intermediate cylinder 32, 32a, 32b, 32c, 32d plate cylinder 33, 33a, 33b, 33c, 33d blanket cylinder 34 impression cylinder 35a, 35b, 35c, 35d plate changer 36 plate 37a, 37b, 37c, 37d Plate mounting portion 40 Planetary gear unit 50 Main motor 51 Plate cylinder drive motor 54 Main motor controller 55 Plate cylinder drive motor controller

Claims (12)

In a printing machine that prints on a recording medium using a plate cylinder to which a printing plate is attached, the operation when changing the printing plate is controlled.
Operation of the printing press different from the replacement of the printing plate in at least one of a replacement preparation operation related to preparation for replacement of the printing plate attached to the plate cylinder and a return operation related to return from replacement of the printing plate A plate exchange controller characterized by overlapping with An exchange preparation operation relating to preparation for replacement of the printing plate attached to the plate cylinder is completed during operation of the printing press different from the replacement of the printing plate,
The plate change control device according to claim 1, wherein an operation of the printing press different from the change of the printing plate is executed from the start of the return operation related to the return from the change of the printing plate. The printing press includes a plurality of plate cylinders,
The replacement preparation operation is an operation of rotating a portion of the plate cylinder to which the printing plate is attached toward the replacement position of the printing plate,
3. The plate replacement control apparatus according to claim 1, wherein the returning operation is an operation of rotating each of the plate cylinders whose plates have been replaced to respective printing start positions. The printing machine includes a plurality of plate cylinders, and the printing plates are replaced in order from a plurality of plate cylinders,
The replacement preparatory operation is an operation relating to preparation for replacement of the printing plate attached to the plate cylinder for first replacing the printing plate among a plurality of the plate cylinders,
The return operation is an operation of releasing a plate changer for exchanging the printing plate from the plate cylinder that has been exchanged for the printing plate last among a plurality of plate cylinders. The described plate exchange control device. In the replacement preparation operation, the operation until the plate fixing means for attaching the printing plate to the plate cylinder is opened during the operation of the printing press different from the replacement of the printing plate,
3. The plate change control device according to claim 2, wherein, in the return operation, after the printing plate is attached to the plate cylinder, the operation of the printing machine different from the replacement of the printing plate is started. . A plate cylinder for mounting a printing plate for printing on a recording medium;
The plate change control device according to any one of claims 1 to 5, which controls an operation when changing the printing plate,
A printing machine comprising: In a printing machine that prints on a recording medium using a plate cylinder to which a printing plate is attached,
Operation of the printing press different from the replacement of the printing plate in at least one of a replacement preparation operation related to preparation for replacement of the printing plate attached to the plate cylinder and a return operation related to return from replacement of the printing plate A plate exchange method characterized by overlapping with the plate. An exchange preparation operation relating to preparation for replacement of the printing plate attached to the plate cylinder is completed during operation of the printing press different from the replacement of the printing plate,
8. The plate replacement method according to claim 7, wherein an operation of the printing machine different from the replacement of the printing plate is executed from the start of the return operation related to the return from the replacement of the printing plate. The printing press includes a plurality of plate cylinders,
The replacement preparation operation is an operation of rotating a portion of the plate cylinder to which the printing plate is attached toward the replacement position of the printing plate,
9. The plate replacement method according to claim 7, wherein the returning operation is an operation of rotating each plate cylinder whose plate has been replaced to each printing start position. The printing machine includes a plurality of plate cylinders, and the printing plates are replaced in order from a plurality of plate cylinders,
The replacement preparatory operation is an operation relating to preparation for replacement of the printing plate attached to the plate cylinder for first replacing the printing plate among a plurality of the plate cylinders,
9. The returning operation according to claim 7, wherein the plate exchanging device for exchanging the printing plate is escaped from the plate cylinder that has last exchanged the printing plate among a plurality of the plate drums. How to replace the listed version. In the replacement preparation operation, the operation until the plate fixing means for attaching the printing plate to the plate cylinder is opened during the operation of the printing press different from the replacement of the printing plate,
9. The plate replacement method according to claim 8, wherein, in the returning operation, after the printing plate is attached to the plate cylinder, the operation of the printing machine different from the replacement of the printing plate is started.   A computer program for exchanging a plate, which causes a computer to execute the plate exchanging method according to any one of claims 7 to 11.

Images