JP2018111244A - Printing plate automatic attachment and detachment device and offset rotary printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic printing plate attachment / detachment device and an offset rotary printing press capable of improving the mounting accuracy of a printing plate on a plate cylinder while minimizing the work load required for the printing plate mounting work. SOLUTION: The plurality of printing plate holding mechanisms are provided so as to be able to advance and retreat independently of each other with respect to the peripheral surface of the plate cylinder, and each of the plurality of printing plate holding mechanisms rotates in parallel with the axial direction of the plate cylinder. A plurality of configurations that can rotate along the circumferential direction of the plate cylinder around the axis, and that the printing plate can be pressed against the peripheral surface of the plate cylinder at a forward position advanced toward the peripheral surface of the plate cylinder. It has a presser roller member, and a plurality of plate presser mechanisms are independent of each other when the plate is mounted on and removed from the plate cylinder, and the plate is placed on the gripping side edge of the plate mounting groove. It is configured to press the printing plate against the plate cylinder that rotates with the grip side end portion locked by a plurality of pressing roller members. [Selection diagram] Fig. 2

Description

  The present invention relates to a printing plate automatic attachment / detachment device that automatically attaches and detaches a printing plate to and from a plate cylinder and an offset rotary printing press including the same.

  Conventionally, a printing unit used in an offset rotary press for newspapers includes an ink supply device having a large number of ink supply rollers, a dampening water supply device for supplying dampening water, a plate cylinder on which a printing plate is mounted, And a blanket cylinder to which the blanket is mounted. The printing plate used in this printing unit is provided with an oleophilic printed image portion and a hydrophilic non-image portion. The hydrophilic non-image portion is dampened from a dampening water supply device. When ink is supplied from the ink supply device in a state where water is supplied, the ink is applied only to the oleophilic print image line portion. In this printing unit, the ink supplied from the ink supply device is supplied to the blanket cylinder via the plate cylinder, and the blanket cylinder contacts the continuous paper on which the blanket cylinder travels with a predetermined pressure, whereby the printing plate is applied to the continuous paper. The contents (characters, images, etc.) are transferred.

  A conventional plate cylinder 100 is a printing cylinder having a length in the axial direction in which four pages of printing plates 110 can be mounted side by side. As shown in FIG. 14, a plate mounting groove 102 extending along the axial direction and And an accommodating portion 104 which is an internal space continuous to the plate mounting groove 102. In the accommodating portion 104, a printing plate clamping mechanism configured to wind the printing plate 110 around the peripheral surface of the plate cylinder 100 by pulling the tail edge side end portion 114 of the printing plate 110 into the printing plate mounting groove 102. (Not shown) is buried. Further, the conventional printing plate 110 includes a plate-side end portion 112 that can be locked to one side of the plate-side mounting portion 102 a of the plate-mounting groove 102 of the plate cylinder 100, and a plate-mounting groove by a plate clamping mechanism. And a tail edge side end portion 114 configured to be pulled into 102.

  In such a conventional newspaper rotary offset printing press, the print image is changed by exchanging the printing plate 110. However, such a replacement operation of the printing plate 110 is complicated because it is necessary to perform a plurality of plate cylinders 100 and it is necessary to replace four pages of the printing plate 110 for each plate cylinder 100. There is a problem that the work burden is large.

  In order to solve such problems, in recent years, an automatic printing plate mounting apparatus that automatically mounts the printing plate 110 on the plate cylinder 100 has been proposed (see Patent Document 1). As shown in FIGS. 15 (a) to 15 (d), the automatic plate mounting apparatus of Patent Document 1 is manually prepared on the edge side 102a of the plate cylinder 100 at the edge of the edge of the plate 110 manually. 112 is locked, and then the plate cylinder 100 is rotated forward with the swim roller 120 pressed against the plate cylinder 100 so that the printing plate 110 passes between the plate cylinder 100 and the swim roller 120. The plate cylinder 100 is configured to be mounted. FIG. 15A shows a state in which the grip-side end portion 112 of the printing plate 110 is locked to the grip-side edge portion 102a of the plate cylinder 100 by manual operation while the plate cylinder 100 is stopped. FIG. 15B shows a state where the swim roller 120 is pressed against the plate cylinder 100. FIG. 15C shows a state in which the printing plate clamping mechanism is operated by the lever pressing roller of the printing plate automatic loading device, and FIG. 15D shows that the printing plate 110 is mounted on the plate cylinder 100. Indicates the completed state.

  The automatic printing plate mounting apparatus of Patent Document 1 has such a configuration, so that the leading edge portion 112 of the printing plate 110 is securely locked to the leading edge portion 102a while the plate cylinder 100 is rotating. Since it is possible to prevent unintentional dropping, the printing plate 110 can be attached in close contact with the outer peripheral surface of the plate cylinder 100. Moreover, the printing plate automatic mounting apparatus of patent document 1 can simplify an apparatus structure compared with the case where a special plate press roller is provided separately by utilizing the swimsuit roller 120 as a plate press roller. .

Japanese Patent Laid-Open No. 2005-161818

  By the way, in the automatic printing plate mounting apparatus of Patent Document 1, at least a swim roller is used in order to make the grip-side end portion 112 of the plate 110 tightly contact and lock the grip-side edge portion 102 a of the plate cylinder 100. Until the (plate pressing roller) 120 is brought into pressure contact with the plate cylinder 100, it is necessary for the operator to lightly support the tail edge side end portion 114 of the printing plate 110 by hand.

  In such an automatic printing plate mounting apparatus of Patent Document 1, for example, as shown in FIG. 14, when four plates of the printing plate 110 are simultaneously mounted on the plate cylinder 100, the operation of the automatic printing plate mounting apparatus is performed. In addition, since it is impossible for one worker to simultaneously support the printing plate 110 for four pages, it is necessary to work with a plurality of workers or to install the printing plate 110 for each page. Need to do work.

  However, when working with a plurality of workers, there is a problem that work efficiency is poor. Further, the swim roller 120, which is a plate pressing roller, is not divided (four divisions) for each printing plate and is integrated, so that it is impossible to press and release the plate cylinder 100 for each printing plate. . For this reason, when performing the mounting work of the printing plate 110 for each page, it is necessary to release the pressure contact of the water-filling roller (plate pressing roller) 120 each time the printing plate 110 for the second and subsequent pages is mounted. For this reason, there is a problem in that the adhesion between the grip-side end portion 112 of the locked printing plate 110 and the grip-side edge portion 102a of the plate cylinder 100 is lowered, and the mounting accuracy cannot be maintained. .

  The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to improve the mounting accuracy of the printing plate with respect to the plate cylinder while minimizing the work burden required for the mounting operation of the printing plate. Another object of the present invention is to provide a printing plate automatic attachment / detachment apparatus and an offset rotary printing press that can be used.

  An automatic plate attaching / detaching device according to the present invention is an automatic plate attaching / detaching device for attaching / detaching a plurality of printing plates to / from a plate cylinder having a plate mounting groove extending in the axial direction, and the peripheral surface of the plate cylinder A plurality of printing plate pressing mechanisms configured to be able to advance and retreat independently from each other, and each of the plurality of printing plate pressing mechanisms has a rotation axis parallel to the axial direction of the printing drum. And a plurality of pressing rollers configured to be able to press the plate against the circumferential surface of the plate cylinder at a forward position advanced toward the circumferential surface of the plate cylinder. A plurality of printing plate pressing mechanisms that are independent of each other at the time of loading and unloading of the printing plate with respect to the plate cylinder, at the edge side of the printing plate loading groove. With respect to the plate cylinder that rotates in a state where the end portion on the side of the plate is locked Characterized in that it is configured to press the 該刷 plate by the plurality of presser roller members.

  In the printing plate automatic attachment / detachment apparatus according to the present invention, it is preferable that the printing plate pressing mechanism is provided for each printing plate. In this case, the printing plate automatic attachment / detachment apparatus according to the present invention is configured such that only the printing plate pressing mechanism corresponding to the printing plate requiring plate change operates independently based on preset plate change information. It is preferred that

  Further, in the printing plate automatic attachment / detachment apparatus according to the present invention, the plurality of printing plate pressing mechanisms are in a state in which the plate cylinder is located at a plate-hanging position where the printing plate can be locked in the printing plate mounting groove. It is preferable that the plate cylinder is provided at a position aligned with the plate mounting groove of the plate cylinder.

  Further, in the printing plate automatic attachment / detachment apparatus according to the present invention, the plate cylinder has a printing plate clamping mechanism disposed in the printing plate mounting groove, and the printing plate clamping mechanism is provided for each printing plate. An angular displacement axis and an operating lever provided for each angular displacement axis and rotating the corresponding angular displacement axis independently of the other angular displacement axes. It is preferable to further include a printing plate attachment / detachment operation mechanism that is provided for each operation lever of the tightening mechanism and that can operate the corresponding operation lever independently of other operation levers.

  An offset rotary printing press according to the present invention includes the above-described automatic printing plate attaching / detaching device and a plate cylinder having a printing plate mounting groove extending in the axial direction.

  According to the present invention, there is provided an automatic printing plate attaching / detaching apparatus and an offset rotary printing press capable of improving the mounting accuracy of a printing plate with respect to a plate cylinder while minimizing the work load required for the mounting operation of the printing plate. be able to.

It is a figure which shows schematic structure of the printing unit which concerns on this embodiment. It is a figure which shows schematic structure of the plate cylinder and printing plate automatic attachment / detachment apparatus which concern on this embodiment. It is a figure which shows schematic structure of the plate cylinder and printing plate automatic attachment / detachment apparatus which concern on this embodiment. FIG. 4A is a side view showing a schematic configuration of the printing plate pressing mechanism in the retracted state, and FIG. 4B is a side view showing a schematic configuration of the printing plate pressing mechanism in the advanced state. FIG. 5A to FIG. 5C are process diagrams schematically showing states of the printing plate pressing mechanism, the plate cylinder, and the printing plate in the plate-engaging process. FIG. 6A is a side view showing a schematic configuration of the printing plate attaching / detaching operation mechanism when the printing plate is mounted on the plate cylinder, and FIG. 6A shows a schematic configuration of the printing plate attaching / detaching operation mechanism in the retracted state; b) shows a schematic configuration of the printing plate attaching / detaching operation mechanism in the advanced state. FIG. 7A is a side view showing a schematic configuration of the printing plate attaching / detaching operation mechanism when the printing plate is removed from the plate cylinder, and FIG. 7A shows a schematic configuration of the printing plate attaching / detaching operation mechanism in the retracted state; b) shows a schematic configuration of the printing plate attaching / detaching operation mechanism in the advanced state. FIG. 8A is a process diagram showing the press plate pressing mechanism in a state where the plate cylinder is rotating in the forward direction toward the plate hanging position, and FIG. 8B is a press plate attaching / detaching operation in the same state. It is process drawing which shows a mechanism. FIG. 8 (c) is a process diagram showing the plate pressing mechanism in a state in which the holding side end portion of the printing plate is locked to the holding side edge portion of the plate mounting groove at the plate hanging position. FIG. 6D is a process diagram illustrating the printing plate attaching / detaching operation mechanism in the same state. 9 (a), 9 (c), 9 (e), and 9 (g) show the printing plate in the plate pressing mechanism advancement process, plate-engaging process, plate loading process, and plate automatic removal apparatus retraction process. FIG. 9B, FIG. 9D, FIG. 9F, and FIG. 9H are process diagrams showing the presser mechanism, and the plate presser mechanism advancement process, the plate hanging process, the plate mounting process, and the printing process, respectively. It is process drawing which shows the printing plate attachment / detachment operation mechanism in the plate automatic attachment / detachment apparatus retracting step. 10 (a), 10 (c), and 10 (e) show a state in which the plate cylinder rotates in the forward direction toward the tail edge removal position, the plate pressing mechanism advancement step, and the lock release step. FIG. 10 (b), FIG. 10 (d), and FIG. 10 (f) are diagrams showing the press plate holding mechanism, and FIG. 10 (b) shows a state in which the plate cylinder rotates in the forward direction toward the tail edge removal position; It is process drawing which shows the printing plate attachment / detachment operation mechanism in a printing plate press mechanism advance process and a lock release process. 11 (a), 11 (c) and 11 (e) are process diagrams showing the plate holding mechanism in the plate attaching / detaching operation mechanism retreating step, reverse rotation step and plate holding mechanism retreating step, FIG. 11B, FIG. 11D, and FIG. 11F are process diagrams showing the plate attachment / detachment operation mechanism in the plate attachment / detachment operation mechanism retracting step, the reverse rotation step, and the plate pressing mechanism retracting step. . It is a block diagram which shows roughly the structure relevant to printing plate removal control. It is a figure which shows the driving | running pattern of the plate cylinder which concerns on this embodiment. It is a figure which shows schematic structure of the conventional plate cylinder and a printing plate. FIG. 15A to FIG. 15D are diagrams showing a schematic configuration of a conventional plate automatic loading apparatus.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  The rotary offset printing press according to this embodiment includes a continuous paper supply unit (not shown) for setting roll paper obtained by winding continuous paper (printed body) in a roll shape, and continuous paper supplied from the continuous paper supply unit. A plurality of printing units 2a and 2b that perform offset printing on both sides of the sheet, and continuous sheets after offset printing are cut to form individual sheet-like sheets, and are composed of one sheet-like sheet or a plurality of sheet-like sheets. A folding machine (not shown) that folds a sheet-like sheet group to form a signature, and a post-processing mechanism (not shown) that accumulates by performing predetermined processing such as folding the signature formed by the folding machine into two. ), One or a plurality of control units (not shown) that execute various controls of each configuration, and a setting input unit 60 (see FIG. 8) for inputting various setting information. Note that in the rotary offset printing press according to the present embodiment, various well-known ones can be used arbitrarily as the continuous paper supply unit, the folding machine, the post-processing mechanism, the control unit, and the setting input unit 60. Is omitted.

  As shown in FIG. 1, each of the upper printing unit 2a and the lower printing unit 2b includes a pair of ink supply devices 4 having a large number of ink supply rollers, and a pair of dampening water supply devices 5 for supplying dampening water. , A pair of plate cylinders 6 to which the printing plates 7A to 7D are mounted, a pair of blanket cylinders 8 to which a printing blanket (not shown) is mounted, and a printing plate disposed close to the operation-side plate cylinder 6 An automatic plate attaching / detaching device 10 is provided. Further, the upper printing unit 2a and the lower printing unit 2b include a printing control unit 40 (see FIG. 12) that executes various types of control as a common configuration. In the printing units 2a and 2b, the ink supplied from the ink supply device 4 is supplied to the printing blanket of the blanket cylinder 8 via the printing plates 7A to 7D of the printing cylinder 6 in the same manner as the conventional printing unit, and printing is performed. By contacting the continuous paper (printed material) on which the blanket for travel is brought into contact with a predetermined pressure, the contents of the printing plate (characters, images, etc.) are transferred to the continuous paper. In the offset rotary printing press according to the present embodiment, the ink supply device 4, the fountain solution supply device 5, and the blanket cylinder 8 can arbitrarily use various known ones, and thus the description thereof is omitted.

  The plate cylinder 6 is a printing cylinder formed in a columnar shape, and as shown in FIG. 2, mounting shafts 6a provided at both ends and four pages of printing plates 7A to 7D are mounted side by side in the axial direction. A peripheral surface having a possible plate mounting region R, a plate mounting groove 6b extending in the axial direction, a housing portion (not shown) which is an internal space continuous to the plate mounting groove 6b, and a plate mounting It has the operation opening part 6c formed in the edge part side rather than the area | region R, respectively. In the present embodiment, the plate cylinder 6 has an axial length (W) whose circumferential surface is substantially equal to four times the horizontal length of one newspaper page, and the vertical length of one newspaper page. This is a so-called 4 (W) × 1 (L) type plate cylinder having an equal circumferential length (L).

  As shown in FIG. 2, the plate cylinder 6 has rotational drive means in which attachment shafts 6 a at both ends are attached to a pair of frames F and F via bearings (not shown) and connected to one attachment shaft 6 a. (Not shown) is configured to be rotationally driven at a predetermined speed. In the printing plate mounting groove 6b, register pins (not shown) for positioning the printing plates 7A to 7D are provided for the printing plates 7A to 7D. A printing plate configured to wind the printing plates 7A to 7D around the peripheral surface of the plate cylinder 6 by drawing the tail edge side end portion 7b of the printing plates 7A to 7D into the printing plate mounting groove 6b. A tightening mechanism 50 is embedded. The operation opening 6 c is an opening for operating the first to fourth operation mechanisms 52 a to 52 d of the printing plate clamping mechanism 50. In the rotary offset printing press according to the present embodiment, various well-known printing cylinders 6 can be arbitrarily used, and thus detailed description thereof is omitted.

  The printing plates 7A to 7D are formed of a flexible metal thin plate material having a size corresponding to one page of a newspaper. Like the conventional printing plate 110, the printing plates 7A to 7D are formed in the printing plate mounting grooves 6b. A tail end 7a that can be locked to one edge portion (a tail edge portion), and a tail end side that is configured to be pulled into the plate mounting groove 6b by the plate tightening mechanism 50. 7b (see FIG. 5 etc.). Cutout portions (not shown) that can be fitted to the register pins of the plate cylinder 6 are formed in the tail end portion 7a and the tail edge side end portion 7b of the printing plates 7A to 7D, The plates 7A to 7D are positioned by fitting these notches into register pins. In the offset rotary printing press according to the present embodiment, various well-known printing plates 7A to 7D can be arbitrarily used, and thus description thereof is omitted.

  The printing plate clamping mechanism 50 includes a locking bar member (not shown) configured by connecting four angular displacement axes (not shown) along the axial direction so as to be coaxial, and a locking bar. This is a so-called lock-up type plate clamping device provided with four operation mechanisms (first to fourth operation mechanisms 52a to 52d) for independently rotating each angular displacement axis of the member. As the plate clamping mechanism 50, various known ones can be used arbitrarily, and thus detailed description thereof is omitted, but generally includes the following configuration.

  Each of the four angular displacement axes has an axial length substantially equal to the horizontal length of one page of the newspaper, and the tail edge side ends 7b of the printing plates 7A to 7D can be respectively locked. It is configured. Further, the four angular displacement axes are connected to different operation mechanisms (first to fourth operation mechanisms 52a to 52d), respectively, and by operating the connected operation mechanisms, each of them is independently centered on the axis. The printing plates 7A to 7D are configured to rotate (angular displacement) in the direction of pulling or loosening.

  As shown in FIG. 2, each of the first to fourth operation mechanisms 52a to 52d includes an operation lever 54 for operating a corresponding angular displacement axis. The operation lever 54 swings between the mounting position for fastening the printing plates 7A to 7D onto the outer peripheral surface of the plate cylinder 6, and the locking bar member and the tail edge side end portion 7b of the printing plates 7A to 7D. A corresponding angular displacement axis is angularly displaced between the disengaged positions where the engagement is released. Specifically, each operating lever 54 is rotated downward in the tightening direction by pressing the tip end side of each operating lever 54 downward (inward in the radial direction of the plate cylinder 6), and the printing plate 7A. The tail end 7b of ~ 7D is configured to be pulled into the plate cylinder 6 by a locking bar member (see FIG. 9 (f)). Each operation lever 54 is configured to be locked when the corresponding angular displacement shaft reaches the mounting position. Further, each operation lever 54 is unlocked when the base end side is pushed downward (inward in the radial direction of the plate cylinder 6) in the locked state, and thereby the corresponding angular displacement shaft is opposite to the tightening direction. The engagement bar member and the tail edge side end portion 7b of the printing plates 7A to 7D are disengaged (see FIG. 10 (f)).

  As shown in FIG. 1, the automatic plate removing / attaching apparatus 10 has a plate cylinder 6 in which a plate-hanging position described later (the end portions 7a of the printing plates 7A to 7D are arranged on the edge side of the plate mounting groove 6b). The plate 7A to 7D can be automatically mounted on the plate cylinder 6 at a position aligned with the plate mounting groove 6b in a state of being stopped at a position where it can be locked). In addition, the printing plates 7A to 7D can be automatically removed from the plate cylinder 6. Specifically, as shown in FIGS. 2 and 3, the automatic plate removing / attaching apparatus 10 includes a fixed base member 12 suspended between a pair of frames F and F via a pair of left and right brackets 14, and a plate cylinder. A plurality of (four in this embodiment) printing plate pressing mechanisms 20a to 20d and printing plate attaching / detaching operation mechanisms 30a to 30d attached to the fixed base member 12 in a state in which the fixed base member 12 can move forward and backward. And a front cover 16 (see FIG. 4 and the like) attached to cover the front surface. 2 and 3 show the automatic plate removing / attaching device 10 in a state where the front cover 16 and a guard bracket 26 and a guard member 27 (to be described later) are removed for easy explanation.

  As shown in FIGS. 2 and 3, the fixed base member 12 is a long member having a length substantially equal to the axial length of the plate cylinder 6, and one end portion of the fixed base member 12 via the bracket 14 is one frame F. The other end is fixed to the other frame F via the bracket 14. As shown in FIGS. 4 and 5, the fixed base member 12 is formed in an inverted L-shaped cross section having an upper surface portion and a back surface portion. As shown in FIGS. 2 and 3, a plurality of (two in this embodiment) linear motion guides 13 are provided on the inner surface (front surface) of the back surface of the fixed base member 12 for each of the plate pressing mechanisms 20 a to 20 d. It is attached. Each of the linear motion guides 13 includes a linear bush 13a fixed to the inner surface (front surface) of the back surface portion of the fixed base member 12, and a shaft 13b fixed to a movable base member 24 described later of the printing plate pressing mechanisms 20a to 20d. Thus, the movable base member 24 is configured to guide the movement of the movable base member 24 relative to the fixed base member 12. 4 and 5 are schematic views showing a state in which the plate pressing mechanisms 20a to 20d are viewed from the side when the direction shown in FIGS. 2 and 3 is the front. 4 and 5, only the printing plate pressing mechanism 20a is illustrated, but the other printing plate pressing mechanisms 20b to 20d have the same configuration.

  As shown in FIGS. 4 and 5, the front cover 16 is a thin plate member that extends downward from the front edge of the upper surface of the fixed base member 12, and is attached to the fixed base member 12. The printing plate pressing mechanisms 20a to 20d are configured to cover the front surface. The fixed base member 12 and the front cover 16 as well as the movable base member 24 and the guard bracket 26, which will be described later, can be arbitrarily selected from various materials, but the use of aluminum ones maintains rigidity. However, it is preferable because the weight can be reduced and the removal during the maintenance can be facilitated.

  As shown in FIGS. 2 and 3, the press plate holding mechanisms 20a to 20d are provided by being divided in the axial direction so as to correspond to the press plates 7A to 7D on a one-to-one basis (four divisions in this embodiment). These plural (four in this embodiment) printing plate pressing mechanisms 20a to 20d are configured to operate independently of each other.

  As shown in FIGS. 2 to 5, the printing plate pressing mechanisms 20 a to 20 d are respectively provided with an air cylinder 22 attached to the inner surface (lower surface) of the upper surface portion of the fixed base member 12, and a cylinder rod 23 of the air cylinder 22. A movable base member 24 attached to the tip, a guard bracket 26 (see FIGS. 4 and 5) fixed to the movable base member 24, and a guard member 27 (see FIGS. 4 and 5) attached to the guard bracket 26 And a plurality of pressing roller members 28a and 28b attached to the movable base member 24.

  As shown in FIGS. 2 to 5, the air cylinder 22 is configured to move the movable base member 24 forward and backward relative to the plate cylinder 6 by the forward and backward movement of the cylinder rod 23. As shown in FIG. 4A, the plate holding mechanisms 20a to 20d according to the present embodiment include an air pipe (not shown) and the like inside the front cover 16 when the cylinder rod 23 is retracted. It is configured to be hidden. In the present embodiment, various well-known air cylinders 22 can be arbitrarily used, and the description thereof is omitted. In addition, the air cylinder may not be used as long as the movable base member 24 can be moved forward and backward with respect to the plate cylinder 6.

  As shown in FIGS. 2 and 3, each movable base member 24 is composed of a long thin plate member having a length substantially equal to the length in the horizontal direction of each printing plate 7A to 7D. One is provided for 7D. Each movable base member 24 has an upper surface connected to the tip of the cylinder rod 23 of each air cylinder 22 and is configured to approach or separate from the plate cylinder 6 as the cylinder rod 23 advances and retreats. ing. As shown in FIGS. 4 and 5, a guard bracket 26 is attached to the lower surface of each movable base member 24 so as to protrude downward at the front end edge portion, and at the rear side of the guard bracket 26. A plurality of pressing roller members 28a and 28b are attached to the region.

  2 shows a state in which all the cylinder rods 23 of the printing plate pressing mechanisms 20a to 20d are retracted and the movable base member 24 is separated from the plate cylinder 6, that is, all the printing plate pressing mechanisms 20a to 20d are the plate. A state is shown in which the “detached” state is separated from the cylinder 6 and the operator can manually lock the plate 7A to 7D with the plate mounting groove 6b or remove it from the plate mounting groove 6b. Yes. Further, FIG. 3 shows that only one printing plate pressing mechanism 20a maintains the pressing state (“attached” state) of the printing plate 7A against the plate cylinder 6, and the other three printing plate pressing mechanisms 20b to 20d are “disengaged”. It shows a state that has become a state. Since the plate pressing mechanisms 20a to 20d according to the present embodiment can operate independently of each other as described above, the combination of the “attached” state and the “detached” state shown in FIGS. In addition, for example, two of the four press plate holding mechanisms 20a to 20d are in the “attached” state and the other two are in the “detached” state. It is possible to realize combinations (16 in all in the present embodiment) of the “arrival” state and the “detached” state.

  As shown in FIGS. 2 and 3, the plurality of pressing roller members 28 a and 28 b are centered on one central pressing roller member 28 a disposed substantially at the center in the longitudinal direction of the movable base member 24 and the central pressing roller member 28 a. And two peripheral presser roller members 28b that are spaced apart in the longitudinal direction. The central pressing roller member 28a and the peripheral pressing roller member 28b have the same diameter, and the plate is moved with a uniform pressing force when the movable base member 24 is close to the peripheral surface of the plate cylinder 6 (advance position). The printing plates 7 </ b> A to 7 </ b> D can be pressed against the peripheral surface of the cylinder 6. As shown in FIGS. 4 and 5, the two peripheral pressing roller members 28 b are arranged in alignment along the axial direction of the plate cylinder 6 so that the rotation axes are coaxial with each other. On the other hand, the center pressing roller member 28a is arranged with a position shifted by a minute distance x (for example, 1 to 5 mm) on the upstream side in the forward direction of the plate cylinder 6 with respect to the two peripheral pressing roller members 28b. In addition, as the pressing roller members 28a and 28b, for example, a cylindrical urethane roller having a diameter of 25 mm can be preferably used, but is not limited thereto. Moreover, the position and number of the center pressing roller member 28a and the peripheral pressing roller member 28b can be changed to an arbitrary number and position as necessary.

  In the printing plate pressing mechanisms 20a to 20d according to the present embodiment, the central pressing roller member 28a is thus arranged at a position shifted upstream in the forward direction of the plate cylinder 6 from the peripheral pressing roller member 28b. As shown in FIGS. 5 (a) to 5 (c), the central pressing roller member 28a presses the substantially central portion in the lateral direction of the printing plates 7A to 7D prior to the peripheral pressing roller member 28b. Is possible. Thus, the center pressing roller member 28a presses the vicinity of the tail edge side end portion 7b of the printing plates 7A to 7D toward the plate mounting groove 6b, and the tail edge side edge portion 7b of the plate cylinder 6 with respect to the register pin. Can be smoothly and reliably engaged. Further, in the state in which the printing plates 7A to 7D are pressed against the peripheral surface of the plate cylinder 6 with a uniform pressing force by the central pressing roller member 28a and the peripheral pressing roller member 28b, each peripheral pressing roller member from the central pressing roller member 28a. Since the pressing force can be applied to the printing plates 7A to 7D in the direction toward 28b, that is, in the direction from the lateral center of the printing plates 7A to 7D toward the both ends, the printing plates 7A to 7D. 7D mounting accuracy can be further improved.

  The guard bracket 26 is formed of a long thin plate member having a length substantially equal to the length of the movable base member 24 in the longitudinal direction, and as shown in FIGS. 4 and 5, the guard bracket 26 is provided in front of the plurality of pressing roller members 28a and 28b. On the side, it is attached to the lower surface of the movable base member 24. The guard bracket 26 functions as a finger guard for preventing a finger or the like from being accidentally caught between the plate cylinder 6 and the pressing roller members 28a and 28b when the printing plates 7A to 7D are attached to and detached from the plate cylinder 6. It is configured as follows. The guard member 27 is a long thin plate member having a length substantially equal to the length of the guard bracket 26 in the longitudinal direction, and is attached to the lower end edge of the guard bracket 26. The guard member 27 is formed of a material that is more flexible than the guard bracket 26, such as a resin material such as polyamide, and the plates 7A to 7D are attached to the guard bracket 26 when the plates 7A to 7D are attached to and detached from the plate cylinder 6. Is configured to function as a guard to prevent direct contact and damage.

  The printing plate pressing mechanisms 20a to 20d according to the present embodiment have the above-described configuration. For example, as shown in FIGS. 4 and 5, when the printing plates 7A to 7D are mounted on the plate cylinder 6, the printing plate is mounted. Printing is performed by a plurality of pressing roller members 28a and 28b against the plate cylinder 6 that rotates in the forward direction in a state where the end portions 7a of the printing plates 7A to 7D are locked to the end portions of the end portions of the grooves 6b. It is comprised so that plate | version | printing 7A-7D may be pressed. Further, as shown in FIG. 5C, for example, the press plate holding mechanisms 20a to 20d according to the present embodiment center the tail edge side end portion 7b of the press plates 7A to 7D reaching the press plate mounting groove 6b. The notch part (not shown) formed in the tail edge side end part 7b is fitted to the register pin by being pushed into the plate mounting groove 6b by the pressing roller member 28a. Furthermore, the printing plate pressing mechanisms 20a to 20d according to the present embodiment can prevent the printing plates 7A to 7D from being formed on the edge portion of the printing plate mounting groove 6b even when the printing plates 7A to 7D are removed from the plate cylinder 6. The printing plates 7A to 7D are pressed against the plate cylinder 6 that rotates in the opposite direction with the tail end 7a being locked by the plurality of pressing roller members 28a and 28b, and the printing plates 7A to 7D are fluttered. It is configured to suppress.

  As shown in FIGS. 2 and 3, the printing plate attaching / detaching operation mechanisms 30 a to 30 d are provided one by one at positions aligned with the first to fourth operation mechanisms 52 a to 52 d. In the present embodiment, the two printing plate attachment / detachment operation mechanisms 30a, 30b arranged at positions aligned with the first and second operation mechanisms 52a, 52b are arranged in the longitudinal direction of the fixed base member 12 via one bracket 32. The two printing plate attachment / detachment operation mechanisms 30c, 30d, which are attached in the vicinity of one end portion and are aligned with the third and fourth operation mechanisms 52c, 52d, are fixed via one bracket 32. The base member 12 is attached in the vicinity of the other end portion in the longitudinal direction.

  As shown in FIGS. 2 and 6, the printing plate attaching / detaching operation mechanisms 30 a to 30 d are respectively an air cylinder 34 attached to the bracket 32 and a lever pressing member 38 attached to the tip of the cylinder rod 36 of the air cylinder 34. And.

  As shown in FIG. 6, the air cylinder 34 is configured to move the lever pressing member 38 forward and backward with respect to the plate cylinder 6 by the forward and backward movement of the cylinder rod 36. 6A shows a state in which the cylinder rod 36 is retracted, that is, a state in which the lever pressing member 38 is separated from the plate cylinder 6. FIG. 6B shows a state in which the cylinder rod 36 has advanced. That is, a state where the lever pressing member 38 approaches the plate cylinder 6 is shown. In the present embodiment, various known air cylinders 34 can be arbitrarily used, and the description thereof is omitted. Further, the air cylinder need not be an air cylinder as long as the lever pressing member 38 can move forward and backward with respect to the plate cylinder 6.

  As shown in FIG. 6, the upper surface of the lever pressing member 38 is connected to the tip of the cylinder rod 36 of the air cylinder 34. On the lower surface of the lever pressing member 38, a protruding portion protruding downward (in the direction toward the plate cylinder 6) is formed.

  The printing plate attaching / detaching operation mechanisms 30a to 30d according to the present embodiment have the above-described configuration, so that the printing plates 7A to 7D are arranged at the edge portion of the printing plate mounting groove 6b as shown in FIG. The lever pressing member 38 moves forward with respect to the plate cylinder 6 in a state where the side end portion 7a is locked and the tail edge side end portion 7b is pushed into the plate mounting groove 6b. To the fourth operation mechanism 52a to 52d) by pushing down the tip end side of the operation lever 54 downward (inward in the radial direction of the plate cylinder 6), the corresponding angular displacement shaft is rotated in the tightening direction, and the circumference of the plate cylinder 6 is rotated. The plates 7A to 7D are automatically mounted on the surface. Further, as shown in FIG. 7, the plate pressing / removing operation mechanisms 30 a to 30 d according to the present embodiment have a lever pressing member 38 that moves forward with respect to the plate cylinder 6 in which the printing plates 7 </ b> A to 7 </ b> D are mounted. The operation lever 54 is unlocked by pushing down the base end side of the operation lever 54 of the operation mechanism (first to fourth operation mechanisms 52a to 52d) downward (inward in the radial direction of the plate cylinder 6). The angular displacement shaft released from the rotation is rotated in a direction opposite to the tightening direction, whereby the engagement bar member of the printing plate clamping mechanism 50 and the tail edge side end portion 7b of the printing plates 7A to 7D are engaged. Is configured to release.

  In this embodiment, the printing control unit 40 is a PLC (Programmable Logic Controller), and includes rotation control of the plate cylinder 6 and operation control of the printing plate pressing mechanisms 20a to 20d and the printing plate attaching / detaching operation mechanisms 30a to 30d. Various print controls can be executed.

  The printing control unit 40 is configured to independently operate each of the plate pressing mechanisms 20a to 20d and each of the plate attaching / detaching operation mechanisms 30a to 30d in accordance with the rotation operation of the plate cylinder 6. That is, the printing control unit 40 is operated by a rotational position detector (for example, an encoder or the like) provided on a mounting shaft 6a of the plate cylinder 6 or a rotational driving means (for example, a servo motor or the like) connected to the mounting shaft 6a. Based on the detected rotation operation information (rotation speed, rotation position, etc.) of the plate cylinder 6, the plate cylinder 6 is accurately stopped at a predetermined stop position in each plate attaching / detaching step. Further, based on the information on the rotation operation of the plate cylinder 6, the plate pressing mechanisms 20 a to 20 d and the plate attachment / detachment operation mechanisms 30 a to 30 d are independently operated at appropriate timing in accordance with the rotation operation of the plate cylinder 6. It is configured to work.

  Here, between the pair of frames F, F of the lower printing unit 2b, as shown in FIG. 1, a plate hanging position button (not shown), a plate hanging preparation button (not shown), and a plate hanging button (Not shown) and an operation unit 3 provided with a plate removal button (not shown) are provided. The print control unit 40 automatically operates the plate cylinder 6 and the automatic printing plate attachment / detachment device 10 when these buttons are pressed by an operator or when an execution instruction to be described later is received from the setting input unit 60. It is configured as follows. The operation unit 3 includes a plate holding mechanism that is operated from the plate holding mechanisms 20a to 20d and the plate attaching / detaching operation mechanisms 30a to 30d provided in the upper printing unit 2a and the lower printing unit 2b, respectively. Surface selection buttons (not shown) for selecting 20a to 20d and the plate attaching / detaching operation mechanisms 30a to 30d are further arranged.

  Specifically, the printing control unit 40 locks the grip-side end portions 7a of the printing plates 7A to 7D to the grip-side edge portions of the plate mounting groove 6b when the plate hooking position button is pressed. The plate cylinder 6 is configured to rotate in the forward direction until it reaches a position where it becomes possible (plate hanging position) (see FIG. 8).

  The printing control unit 40, when the operator locks the gripping side end portion 7a of the printing plates 7A to 7D with the gripping edge portion of the printing plate mounting groove 6b, and then presses the printing plate preparation button. The printing plate pressing mechanisms 20a to 20d that are in the “detached” state are moved forward with respect to the plate cylinder 6, and the printing plates 7A to 7D are pressed against the peripheral surface of the plate cylinder 6 by the plurality of pressing roller members 28a and 28b. (See FIG. 9A). Note that the press plate holding mechanisms 20a to 20d in the “attached” state are already pressed against the peripheral surface of the plate cylinder 6, and thus do not operate even when the plate hooking preparation button is pressed.

  In the state in which the printing plates 7A to 7D are pressed against the peripheral surface of the plate cylinder 6 by the printing plate pressing mechanisms 20a to 20d, the printing control unit 40 moves the distal end portion of the operation lever 54 of the printing plate tightening mechanism 50 of the plate cylinder 6. The plate cylinder 6 is configured to rotate in the forward direction until reaching a position (clamping position) aligned with the protruding portion of the lever pressing member 38 of the printing plate attaching / detaching operation mechanisms 30a to 30d (see FIG. 9D). . Further, the printing control unit 40 supplies the plate cylinder attaching / detaching operation mechanisms 30a to 30d corresponding to the plate pressing mechanisms 20a to 20d, which are in the “detached” state, when the plate cylinder 6 is stopped at the tightening position. 6, and by pushing down the tip of the operation lever 54 of the plate clamping mechanism 50 of the plate cylinder 6 by the protruding portion of the lever pressing member 38, the plates 7 </ b> A to 7 </ b> D are mounted on the plate cylinder 6. (See FIG. 9F). At this time, the printing plate attaching / detaching operation mechanisms 30a to 30d corresponding to the printing plate pressing mechanisms 20a to 20d in the “attached” state do not operate. Further, the printing control unit 40 moves the plate pressing mechanisms 20a to 20d and the plate attaching / detaching operation mechanisms 30a to 30d backward from the plate cylinder 6 after the mounting of the printing plates 7A to 7D on the plate cylinder 6 is completed. (See FIG. 9 (g) and FIG. 9 (h))

  The print control unit 40 causes the plate cylinder 6 and the automatic printing plate detachment apparatus 10 to execute a plate removal operation when the plate removal button is pressed or when an execution instruction to be described later is received from the setting input unit 60. It is configured as follows.

  That is, the printing control unit 40 firstly positions the base end portion of the operation lever 54 of the plate clamping mechanism 50 of the plate cylinder 6 with the protruding portion of the lever pressing member 38 of the plate attachment / detachment operation mechanisms 30a to 30d (ｄ The plate cylinder 6 is configured to rotate in the forward direction until reaching the bottom edge removal position (see FIG. 10B).

  Further, the printing control unit 40 advances the press plate holding mechanisms 20a to 20d with respect to the plate cylinder 6 in a state where the plate cylinder 6 is stopped at the tail edge removal position, and the press control members 28a and 28b are used. The printing plates 7A to 7D are configured to be pressed against the peripheral surface of the plate cylinder 6 (see FIG. 10C).

  Further, the printing control unit 40 advances the plate attaching / detaching operation mechanisms 30 a to 30 d corresponding to the plate 7 A to 7 D to be changed, with respect to the plate cylinder 6, and the plate cylinder by the protruding portion of the lever pressing member 38. By pressing down the base end portion of the operation lever 54 of the printing plate clamping mechanism 50 of 6 and releasing the lock of the operation lever 54, the locking bar member of the printing plate clamping mechanism 50 and the printing plates 7A to 7 to be subjected to plate change are used. It is comprised so that engagement with 7D tail edge side edge part 7b may be cancelled | released (refer FIG.10 (f)). At this time, the printing plate attaching / detaching operation mechanisms 30a to 30d corresponding to the printing plates 7A to 7D that are not to be changed are not operated.

  Furthermore, the printing control unit 40 retracts the plate attachment / detachment operation mechanisms 30a to 30d that have been moved forward from the plate cylinder 6 after the engagement between the locking bar member and the tail edge side end portion 7b is released. (See FIG. 11B). Further, after the printing plate attaching / detaching operation mechanisms 30a to 30d are retracted, the printing control unit 40 removes the holding side end portions 7a of the printing plates 7A to 7D from the holding side edge portions of the printing plate mounting grooves 6b. The plate cylinder 6 is configured to rotate in the opposite direction until it reaches a position where it becomes possible (a position for removing the tail) (see FIGS. 11C and 11D). Further, the printing control unit 40 retracts the printing plate pressing mechanisms 20a to 20d corresponding to the printing plates 7A to 7D to be changed from the printing drum 6 in a state where the printing drum 6 is stopped at the holding position. (See FIG. 11 (e)). At this time, the press plate holding mechanisms 20a to 20d corresponding to the press plates 7A to 7D that are not the target of plate change do not move backward and are maintained in the “attached” state.

  With the above configuration, the printing control unit 40 is configured to be able to automatically attach and detach (remove) any printing plates 7A to 7D with respect to the plate cylinder 6.

  Further, as shown in FIG. 12, the print control unit 40 is a worker who is input through the plate change information (replacement surface information) preset from the upstream system 64 and the setting input unit 60 and the folding unit control unit 62. Only the plate pressing mechanisms 20a to 20d and the plate attaching / detaching operation mechanisms 30a to 30d corresponding to the printing plates 7A to 7D that need to be changed are independently operated based on the execution instruction from the printing plate. The detaching operation of 7A to 7D is automatically executed only for the printing plates 7A to 7D that need to be changed.

  Here, the upstream system 64 is configured to be able to register information acquired from a CTP (Computer to Plate) server or the like for each print pattern and preset it as optimum print preparation data for each part of the offset rotary printing press. This is a so-called newspaper production control system. Specifically, the upstream system 64 prints a plate of the next printing (next printing brand) to be performed next from the CTP server at the start of printing or at the end of printing of the printing (pre-printing brand) performed in advance or in advance. In addition to receiving the replacement information, after the completion of the preprint brand, the replacement information of the printing plates 7A to 7D is preset for each printing control unit 40 based on the replacement information. The setting input unit 60 is, for example, a touch panel type folding unit graphic panel provided in the folding machine, and a batch release screen (not shown) for automatically removing arbitrary printing plates 7A to 7D at once. Various operation screens including can be displayed. The batch release screen is configured so that the plate cylinder 6 for executing the plate release can be selected, and an execution button for executing the plate release for the selected plate cylinder 6 is provided. Note that the setting input unit 60 is not limited to the folded graphic panel, and may be, for example, a printed graphic panel provided in the printing units 2a and 2b. Moreover, although the folding part control part 62 is PLC in this embodiment, it is not limited to this.

  According to the printing plate automatic attachment / detachment apparatus 10 configured as described above, four plate cylinders 6 are provided by remote operation via the setting input unit 60 using the plate change information preset from the upstream system 64. Of the printing plates 7A to 7D, only the printing plates that need to be changed can be automatically removed by the printing plate pressing mechanisms 20a to 20d and the printing plate attaching / detaching operation mechanisms 30a to 30d. As a result, after the operator finishes the operation by the setting input unit 60, the plate is automatically removed in parallel while moving to each printing unit 2a, 2b, and the worker who arrives at each printing unit 2a, 2b. However, since it is possible to immediately start the plate change work, the work efficiency can be improved and the work time can be shortened. In addition, since it is possible to identify at a glance a printing plate that needs to be changed, it is possible to reduce human errors related to changing the plate. Furthermore, since it is possible to maintain a firm mounting state for a printing plate that does not require plate replacement, it is possible to maintain the adhesion of the printing plates 7A to 7D to the plate cylinder 6.

  Here, the rotation control of the plate cylinder 6 in the printing control unit 40 will be described with reference to FIG. First, when the operator operates the operation unit 3 or according to an execution instruction from the setting input unit 60, the print control unit 40 sets the printing units 2a and 2b for the plate cylinder 6 to be subjected to plate change. The plate cylinder 6 is rotated at a slow movement speed (crawling speed) v1 after switching from interlocking control to the single action control. Next, when the rotational position detector detects that the plate cylinder 6 has approached a certain position before the predetermined stop position, the printing control unit 40 temporarily decelerates the plate cylinder 6 to the stop-before speed v2. The plate cylinder 6 is stopped after maintaining the speed for a while. According to such a printing control unit 40, the plate cylinder 6 is not decelerated from the slow speed v1 and stopped at once, but is temporarily decelerated to the stop speed v2, and after maintaining the speed for a while, the plate cylinder 6 is moved. By stopping, variation in the stop position of the plate cylinder 6 due to the influence of the moment of inertia can be minimized, so that the plate cylinder 6 can be accurately stopped at each predetermined stop position. Thereby, it is possible to operate the printing plate automatic attaching / detaching device 10 normally.

  Next, a method for automatically mounting the printing plates 7A to 7D on the plate cylinder 6 using the printing plate automatic attachment / detachment apparatus 10 according to the present embodiment will be described with reference to FIGS. A method for automatically removing the plates 7A to 7D will be described with reference to FIGS. 8 to 11, only the plate holding mechanism 20a, the plate attaching / detaching operation mechanism 30a, and the plate 7A are illustrated, but the plate holding mechanisms 20b to 20d and the plate attaching / detaching operation mechanisms 30b to 30d are illustrated. The same applies to the printing plates 7B to 7D.

  First, prior to the operation of the automatic printing plate attaching / detaching device 10, an operator performs an operation of locking the leading edge portions 7 a of the printing plates 7 </ b> A to 7 </ b> D to the leading edge portions of the printing plate mounting grooves 6 b ( Printing plate preparation process). Specifically, when the operator presses the plate position button on the operation unit 3, as shown in FIGS. 8A to 8D, the plate cylinder 6 is moved to the plate position (press plate mounting). It rotates in the forward direction until the edge 7a of the printing plates 7A to 7D can be engaged with the edge of the groove 6b. Then, in a state where the plate cylinder 6 is stopped at the plate hanging position, the gripper side end portions 7a of the printing plates 7A to 7D are locked to the gripping side edge portions of the plate mounting grooves 6b by the operator. 8A shows the plate pressing mechanisms 20a to 20d in a state where the plate cylinder 6 is rotated in the forward direction toward the plate hanging position, and FIG. 8B shows the printing plate in the same state. The attachment / detachment operation mechanisms 30a to 30d are shown. FIG. 8C shows the press plate holding mechanism 20a to 20b in a state where the end portions 7a of the press plates 7A to 7D are locked to the end portions of the press plate mounting grooves 6b at the plate-hanging position. 20d, and FIG. 8 (d) shows the plate attachment / detachment operation mechanisms 30a to 30d in the same state.

  Next, as shown in FIG. 9 (a), when the operator presses the plate preparation button, the plate presser mechanisms 20 a to 20 d that are in the “disengaged” state move forward with respect to the plate cylinder 6. Then, the printing plates 7A to 7D are pressed against the peripheral surface of the plate cylinder 6 by the plurality of pressing roller members 28a and 28b (pressing plate pressing mechanism advancement step). 9A shows the plate holding mechanisms 20a to 20d in the plate holding mechanism advancement process, and FIG. 9B shows the plate attachment / detachment operation mechanisms 30a to 30d in the same process.

  Next, as shown in FIGS. 9C and 9D, when the operator presses the plate hanging button, the plate cylinder 6 is in the tightening position (the tip of the operation lever 54 is the lever pressing member 38). 1) in the forward direction (positioning process). And, as shown in FIGS. 5 (a) to 5 (c), the plate cylinder 6 rotates substantially once in a state in which the printing plate pressing mechanisms 20a to 20d are moved forward with respect to the plate cylinder 6, as shown in FIGS. While the printing plates 7A to 7D are uniformly pressed against the plate cylinder 6 by the plurality of pressing roller members 28a and 28b, the printing plates 7A to 7D are wound around the peripheral surface of the plate cylinder 6, and the central pressing roller member The tail edge side end portion 7b of the printing plates 7A to 7D is pushed into the plate mounting groove 6b by 28a, and the notch portion of the tail edge side end portion 7b is fitted to the register pin. FIG. 9C shows the plate holding mechanisms 20a to 20d in the plate hanging process, and FIG. 9D shows the plate attaching / detaching operation mechanisms 30a to 30d in the same process.

  After the plate cylinder 6 stops at the tightening position, as shown in FIG. 9 (f), the plate attachment / detachment operation mechanisms 30 a to 30 d move forward with respect to the plate cylinder 6, and the plate cylinder is projected by the protruding portion of the lever pressing member 38. 6 is pushed down (the plate mounting step). Accordingly, the corresponding angular displacement shaft rotates in the tightening direction, and the tail edge side end portion 7b of the printing plates 7A to 7D is drawn into the plate cylinder 6, so that the printing plate 7A is formed on the peripheral surface of the plate cylinder 6. ~ 7D is mounted. FIG. 9E shows the press plate holding mechanisms 20a to 20d in the plate mounting process, and FIG. 9F shows the press plate attaching / detaching operation mechanisms 30a to 30d in the same process.

  After the mounting of the printing plates 7A to 7D on the plate cylinder 6, as shown in FIGS. 9 (g) and 9 (h), the printing plate pressing mechanisms 20a to 20d and the printing plate attaching / detaching operation mechanisms 30a to 30d are moved to the plate. Retract from the cylinder 6 (press plate automatic attachment / detachment device retracting step). Thereby, a series of operation | movement of the printing plate automatic attachment or detachment apparatus 10 regarding mounting | wearing of printing plates 7A-7D is complete | finished. FIG. 9 (g) shows the plate holding mechanisms 20a to 20d in the automatic plate attaching / detaching apparatus retracting step, and FIG. 9 (h) shows the plate attaching / detaching operation mechanisms 30a to 30d in the same step.

  After the predetermined printing is completed, only the printing plates 7A to 7D to be subjected to plate replacement are selected by pressing the plate removal button by the operator or outputting an execution instruction via the setting input unit 60. A process of automatically removing from the plate cylinder 6 is executed. Specifically, first, as shown in FIGS. 10A and 10B, the plate cylinder 6 is held at the tail edge removal position (the base end portion of the operation lever 54 is aligned with the protruding portion of the lever pressing member 38. Rotate in the forward direction until it reaches FIG. 10A shows the press plate holding mechanisms 20a to 20d in a state where the plate cylinder 6 is rotating in the forward direction toward the tail edge removal position, and FIG. 10B is the same state. The printing plate attaching / detaching operation mechanisms 30a to 30d are shown.

  After the plate cylinder 6 has stopped at the tail edge removal position, as shown in FIG. 10C, the plate pressing mechanisms 20a to 20d of the automatic plate attaching / detaching apparatus 10 move forward with respect to the plate cylinder 6, and a plurality The pressing plates 7A to 7D are pressed against the peripheral surface of the plate cylinder 6 by the pressing roller members 28a and 28b (pressing plate pressing mechanism advancement step). FIG. 10C shows the plate holding mechanisms 20a to 20d in the plate holding mechanism advancing step, and FIG. 10D shows the plate attaching / detaching operation mechanisms 30a to 30d in the same step.

  After the printing plate pressing mechanisms 20a to 20d have advanced, only the plate attachment / detachment operation mechanisms 30a to 30d corresponding to the printing plates 7A to 7D to be changed are attached to the plate cylinder 6, as shown in FIG. The base end of the operation lever 54 of the plate clamping mechanism 50 of the plate cylinder 6 is pushed down by the protruding portion of the lever pressing member 38 (lock releasing step). As a result, the lock of the operation lever 54 is released, and the corresponding angular displacement shaft rotates in the direction opposite to the tightening direction, so that the latch plates and the plates 7A to 7D to be replaced are prepared. The engagement with the buttocks end 7b is released. FIG. 10E shows the plate holding mechanisms 20a to 20d in the unlocking process, and FIG. 10F shows the plate attaching / detaching operation mechanisms 30a to 30d in the same process.

  After the engagement between the locking bar member and the tail edge side end portion 7b is released, the plate attaching / detaching operation mechanisms 30a to 30d which have moved forward are retracted from the plate cylinder 6 as shown in FIG. (Plate plate attaching / detaching operation mechanism retreating step). Further, after the printing plate attaching / detaching operation mechanisms 30a to 30d are retracted, as shown in FIGS. 11 (c) and 11 (d), the plate cylinder 6 is picked up and printed from the edge portion of the printing plate mounting groove 6b. The plate 7A to 7D rotate in the reverse direction until reaching the tail end 7a of the plates 7A to 7D (reverse rotation process). Then, in a state where the plate cylinder 6 is stopped at the gripping removal position, only the plate pressing mechanisms 20a to 20d corresponding to the printing plates 7A to 7D to be replaced are moved back from the plate cylinder 6 (press plate pressing). Mechanism retraction process). As a result, the operator can remove the prepared side end portions 7a of the printing plates 7A to 7D to be changed from the prepared edge portion of the printing plate mounting groove 6b, and remove the printing plates 7A to 7D. The series of operations of the automatic plate removing / attaching apparatus 10 is completed. 11A shows the plate holding mechanisms 20a to 20d in the plate attaching / detaching operation mechanism retreating step, and FIG. 11B shows the plate attaching / detaching operation mechanisms 30a to 30d in the same step. FIG. 11C shows the plate holding mechanisms 20a to 20d in the reverse rotation process, and FIG. 11D shows the plate attachment / detachment operation mechanisms 30a to 30d in the same process. Further, FIG. 11 (e) shows the plate holding mechanisms 20a to 20d in the plate holding mechanism retracting step, and FIG. 11 (f) shows the plate attaching / detaching operation mechanisms 30a to 30d in the same step.

  As described above, the automatic printing plate attaching / detaching apparatus 10 according to the present embodiment is an automatic printing plate for attaching / detaching a plurality of printing plates 7A to 7D to / from the plate cylinder 6 having the printing plate mounting groove 6b extending in the axial direction. The attachment / detachment apparatus 10 includes a plurality of printing plate pressing mechanisms 20a to 20d configured to be able to advance and retreat independently from each other with respect to the peripheral surface of the plate cylinder 6, and the plurality of printing plate pressing mechanisms 20a to 20d are respectively provided. The plate cylinder 6 is configured to be rotatable along the circumferential direction of the plate cylinder 6 around a rotation axis parallel to the axial direction of the plate cylinder 6 and advanced toward the circumferential surface of the plate cylinder 6. A plurality of presser roller members 28 a and 28 b configured to press the printing plates 7 </ b> A to 7 </ b> D on the peripheral surface are provided, and the plurality of printing plate pressing mechanisms 20 a to 20 d are the printing plates 7 </ b> A to 7 </ b> D for the plate cylinder 6. Independent of each other when installing and removing Thus, a plurality of pressing roller members 28a and 28b against the plate cylinder 6 that rotates in a state where the end portions 7a of the printing plates 7A to 7D are locked to the end portions of the printing plate mounting grooves 6b. Is configured to press the plates 7A to 7D.

  According to such an automatic plate attaching / detaching device 10, the plurality of plate pressing mechanisms 20a to 20d are configured to be independently operable, so that the plate is mounted and removed for each plate pressing mechanism. Therefore, it is possible to improve the mounting accuracy of the printing plates 7A to 7D with respect to the plate cylinder 6 while minimizing the work burden on the worker. That is, for example, when the printing plate pressing mechanisms 20a to 20d are provided so as to be in one-to-one correspondence with the printing plates 7A to 7D, it is possible to perform the mounting operation of the printing plates 7A to 7D independently page by page. Therefore, all the printing plates 7A to 7D are mounted on the plate cylinder 6 in an optimum state in which the edge portions 7a of the printing plates 7A to 7D and the edge portion of the printing drum 6 are in close contact with each other. be able to. In addition, since it is possible to automatically remove only the printing plates 7A to 7D that need to be changed, it is possible to reduce human errors related to changing plates, and for the printing plates that do not require changing plates, And the adhesion of the printing plates 7A to 7D to the plate cylinder 6 can be maintained. Furthermore, since the press plates 7A to 7D can be pressed against the peripheral surface of the plate cylinder 6 with a uniform pressing force by the plurality of press roller members 28a and 28b, when the press plates 7A to 7D are automatically mounted. The printing plates 7A to 7D can be wound straight with respect to the circumferential direction of the plate cylinder 6, and when the printing plates 7A to 7D are automatically removed, the flapping of the printing plates 7A to 7D is suppressed. Is possible.

  Further, since the automatic plate mounting apparatus of Patent Document 1 presses the swim roller 120 against the printing plate 110, there is a problem that unintended dirt may adhere to the printing plate 110. On the other hand, the printing plate automatic attachment / detachment apparatus 10 is not a swim roller 120 like the automatic printing plate mounting apparatus of Patent Document 1, but a plurality of printing plate pressing mechanisms 20a to 20d that can operate independently. Since it is for pressing ~ 7D, there is an advantage that such a problem does not occur.

  Furthermore, as described above, the plate automatic detaching apparatus 10 according to the present embodiment is based only on the plate holding mechanisms 20a to 20d corresponding to the plates 7A to 7D that need to be changed based on preset plate change information. Are configured to operate independently. According to the printing plate automatic attachment / detachment device 10 configured as described above, it is possible to automatically remove only the printing plates 7A to 7D that need to be changed in accordance with a change schedule, and therefore, an artificial process relating to plate change. Mistakes can be further reduced.

  Further, as described above, the plate press automatic attachment / detachment apparatus 10 according to the present embodiment is a plate-engaging position where the plate press holding mechanisms 20a to 20d can lock the plate 7A to 7D in the plate mounting groove 6b. The plate cylinder 6 is provided at a position aligned with the plate mounting groove 6b of the plate cylinder 6 in a state where the plate cylinder 6 is positioned. According to the printing plate automatic attachment / detachment device 10 configured in this way, the platen end 7a is locked to the platen side edge of the plate cylinder 6 and is supported by the operator's hand. To 7D can be pressed by the plate holding mechanisms 20a to 20d in the vicinity of the plate mounting groove 6b, so that the edge 7a to 7D of the printing plates 7A to 7D and the edge of the plate cylinder 6 are prepared. It is possible to execute the mounting of the printing plates 7A to 7D in a state where high adhesion with the part is maintained.

  Furthermore, the printing plate automatic attachment / detachment apparatus 10 according to the present embodiment is provided for each operation lever 54 of the plate tightening mechanism 50, and the corresponding operation lever 54 can be operated independently from the other operation levers 54. Operation mechanisms 30a to 30d are provided. According to the automatic plate attaching / detaching apparatus 10 as described above, in addition to the winding of the printing plates 7A to 7D around the plate cylinder 6 and the insertion of the tail edge side end portion 7b into the printing plate mounting groove 6b, the printing plate clamping mechanism 50 is provided. The plate plates 7A to 7D can be automatically tightened and the tightening can be released. That is, according to the printing plate automatic attachment / detachment apparatus 10 according to the present embodiment, the operation of hooking the grip-side end portions 7a of the printing plates 7A to 7D on the grip-side edge portions of the plate mounting grooves 6b and the plate mounting grooves 6b. It is possible to automatically perform all operations other than the operation of removing the end portions 7a of the printing plates 7A to 7D from the end portions on the end side.

  The preferred embodiment of the present invention has been described above, but the technical scope of the present invention is not limited to the scope described in the above-described embodiment. Various modifications or improvements can be added to the above embodiments.

  For example, in the above description of the embodiment, the plate cylinder 6 has been described as a so-called 4 (W) × 1 (L) type plate cylinder, but is not limited to this, for example, so-called 4 (W) × Various plate cylinders such as a 2 (L) type cylinder can be used. Further, although it has been described that the printing plates 7A to 7D have a size corresponding to one page of the newspaper and are mounted side by side along the axial direction of the plate cylinder 6, the present invention is not limited thereto. Various printing plates such as a printing plate having a size corresponding to two pages can be used.

  Further, the automatic printing plate attaching / detaching device 10 is not limited to the configuration according to the above-described embodiment, and a plurality of printing plate pressing mechanisms 20 a to 20 d configured to be able to advance and retract independently from each other with respect to the peripheral surface of the plate cylinder 6. If it is the structure provided with, it is possible to employ | adopt various structures.

  Further, in the above-described embodiment, the plate pressing mechanisms 20a to 20d are described as being provided in a one-to-one relationship with the printing plates 7A to 7D. However, the present invention is not limited to this, and for example, a plurality (for example, two) A configuration in which one printing plate pressing mechanism is provided for one printing plate or a configuration in which a plurality of (for example, two) printing plate pressing mechanisms are provided for one printing plate may be employed.

  In the above-described embodiment, when the plate removal button is pressed or when an execution instruction is received from the setting input unit 60, the plate cylinder 6 and the printing plate automatic attachment / detachment device 10 are caused to execute the plate removal operation. Although described above, the present invention is not limited to this. When the printing operation is completed, the plate cylinder 6 and the plate automatic detaching device 10 are automatically operated based on preset plate change information, and the plate 7A to be subjected to plate change. It is good also as a structure by which the process which removes-7D from the plate cylinder 6 is performed, and it is good also as a structure by which all the printing plates 7A-7D are removed automatically at the time of completion of printing operation.

  It is clear from the description of the scope of claims that the above modifications are included in the scope of the present invention.

  6 plate cylinder, 6b printing plate mounting groove, 7A-7D printing plate, 7a edge end side, 10 printing plate automatic attachment / detachment device, 20a-20d printing plate pressing mechanism, 28a central pressing roller member (pressing roller member), 28b Peripheral pressing roller member (pressing roller member), 30a to 30d Printing plate attachment / detachment operation mechanism, 50 Printing plate clamping mechanism, 54 Operation lever

Claims (6)

A printing plate automatic attachment / detachment device for attaching / detaching a plurality of printing plates to / from a plate cylinder having a printing plate mounting groove extending along an axial direction,
A plurality of printing plate pressing mechanisms configured to be able to advance and retract independently from each other with respect to the peripheral surface of the plate cylinder,
Each of the plurality of plate pressing mechanisms is configured to be rotatable along a circumferential direction of the plate cylinder around a rotation axis parallel to the axial direction of the plate cylinder, and directed toward the circumferential surface of the plate cylinder. A plurality of pressing roller members configured to be able to press the printing plate against the peripheral surface of the plate cylinder at a forwardly advanced position.
The plurality of printing plate pressing mechanisms are arranged so that the plate side edge portion of the printing plate is provided on the edge side portion of the printing plate mounting groove independently of each other when the printing plate is attached to and removed from the plate cylinder. An automatic printing plate attaching / detaching device configured to press the printing plate against the plate cylinder rotating in a state where the printing plate is locked by the plurality of pressing roller members. The plate press automatic attachment / detachment device according to claim 1, wherein the plate press holding mechanism is provided for each plate. The printing press according to claim 2, wherein only the plate pressing mechanism corresponding to the printing plate that needs to be changed is configured to operate independently based on preset plate changing information. Plate automatic attachment / detachment device. The plurality of plate pressing mechanisms are aligned with the plate mounting grooves of the plate cylinder in a state in which the plate cylinder is positioned at a plate hooking position where the plate can be locked in the plate mounting groove. The printing plate automatic attachment / detachment apparatus according to any one of claims 1 to 3, wherein the automatic printing plate attachment / detachment apparatus is provided at a position where the printing plate is provided. The plate cylinder has a printing plate clamping mechanism disposed in the printing plate mounting groove,
The printing plate clamping mechanism includes an angular displacement axis provided for each of the printing plates, an operation lever provided for each angular displacement axis, and rotating the corresponding angular displacement axis independently of other angular displacement axes; With
The printing plate automatic attachment / detachment device further includes a printing plate attachment / detachment operation mechanism that is provided for each of the operation levers of the plate tightening mechanism and that can operate the corresponding operation lever independently of other operation levers. The printing plate automatic attachment / detachment device according to any one of claims 1 to 4. An automatic plate detaching device according to any one of claims 1 to 5,
An offset rotary printing press comprising: a plate cylinder having a printing plate mounting groove extending along an axial direction.

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