JP2009073054A - Printing plate stocker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing plate stocker capable of holding a printing plate not having its end bent with least damage on the printing surface. <P>SOLUTION: The printing plate stocker 20 includes a receiving member 22 that abuts on a lower end in the vertical direction of a printing plate S and receives the printing plate S, a bar-like support member 30 provided vertically above the receiving member 22, extending horizontally and supporting the printing plate S, and a contact member 34 provided to the support member 30 and brought into contact with a printing face P of the printing plate S. As the printing plate S is brought into contact with the contact member 34 provided to the substantially bar-like support member 30, the area of the printing plate S in contact with the printing face P can be extremely small, and the printing plate S without its end bent or a printing plate with its end bent can be held without damaging its printing face P. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a printing plate stocker that is provided in the vicinity of a printing press having a plate cylinder and holds a printing plate attached to the printing drum or a printing plate removed from the printing drum.

  Conventionally, a sheet-fed gravure printing machine, a sheet-fed offset printing machine, and the like are known as printing machines that perform printing by winding a printing plate around a plate cylinder. Such a printing machine is provided with a printing unit for each color to be printed, and the printing unit generally includes a plate cylinder, a rubber cylinder, and an impression cylinder.

  In such a plate cylinder, a printing plate having a printing surface for forming a printed image is mounted on the outer peripheral surface thereof. The printing plate is made of a thin aluminum plate or the like, and is manufactured according to the printed matter. The printing machine performs printing by winding a printing plate around a plate cylinder and fixing it. The operator of the printing press changes the printing plate to be mounted on the plate cylinder according to the printed matter.

  In order to facilitate such plate replacement work, the following Patent Document 1 discloses a technique for separating and storing a plurality of printing plates in the same stocker and transporting the stocker along the printing press. Has been.

JP 2005-7688 A

  By the way, in the above-mentioned printing plates, there are those in which the ends of the printing plate are bent and those in which they are not bent in order to be fixed to the plate cylinder. The stocker of Patent Document 1 is for accommodating a printing plate whose end is bent, and the printing plate can be suspended by hooking and hanging the bent portion of the printing plate in a groove provided in the stocker. Can be accommodated.

  However, it is difficult to apply the stocker of Patent Document 1 to accommodate a printing plate whose end is not bent. For example, if the printing plate is inserted and accommodated between the separation plate of the stocker of Patent Document 1 and the support bracket extending substantially parallel to the separation plate, the printing surface of the printing plate is the separation plate or the support bracket. There is a risk of scratching. Therefore, a technology for holding a printing plate that is not bent at the end without damaging the printing surface as much as possible is required for a printing plate stocker that holds a printing plate attached to a printing drum or a printing plate removed from a printing drum. ing.

  The present invention has been made in view of the above, and an object of the present invention is to provide a plate stocker capable of holding a printing plate whose end is not bent without damaging the printing surface as much as possible.

  In order to achieve the above object, a printing plate stocker according to the present invention is provided in the vicinity of a printing machine having a plate cylinder, and holds a printing plate attached to the plate cylinder or a printing plate removed from the plate cylinder. A stocker that receives the printing plate in contact with the vertical lower end of the printing plate; and a support member that is provided vertically above the receiving member, has a substantially rod shape, and extends in the horizontal direction to support the printing plate; The contact member is provided on the support member and contacts the printing surface of the printing plate.

  In the printing plate stocker according to the present invention, the outer surface of the contact portion may be made of an oil repellent resin.

  In the printing plate stocker according to the present invention, two supporting members are provided at intervals in the vertical direction, and can support different portions of the printing plate, respectively.

  In the printing plate stocker according to the present invention, a plurality of sets of support members may be provided at intervals in a direction perpendicular to both the extending direction of the support member and the vertical direction.

  In the printing plate stocker according to the present invention, the printing press is provided with a plate changing operation panel capable of executing a plate changing operation of the printing plate in the plate cylinder, and the printing plate stocker is an operation provided along the printing press. It may be provided so as to face the plate exchange operation panel with the use passage interposed therebetween.

  According to the printing plate stocker of the present invention, a receiving member that contacts the vertical lower end of the printing plate and receives the printing plate, is provided vertically above the receiving member, has a substantially rod shape, and extends in the horizontal direction to form the printing plate. A supporting member to be supported and a contact member provided on the supporting member and in contact with the printing surface of the printing plate are included. Since the contact member provided on the substantially rod-shaped support member is in contact with and supported by the printing plate, the area where the printing surface of the printing plate and the printing plate stocker are in contact with each other is minimized, and the end is bent. Both the plate and the printing plate whose end is not bent can be held without damaging the printing surface as much as possible.

  In the printing plate stocker according to the present invention, the outer surface of the contact member is made of an oil-repellent resin, so that the printing surface of the printing plate to which the ink is attached comes into contact with the contact member of the support member. It is possible to suppress the contact member from being soiled.

  In the printing plate stocker according to the present invention, two supporting members are provided at intervals in the vertical direction, and each supporting a different part of the printing plate can be used without bending the printing plate as much as possible. Can be held.

  In the plate stocker according to the present invention, the support member is provided in a plurality of sets with a space in a direction orthogonal to both the direction in which the support member extends and the vertical direction. Can be maintained, and replacement work such as replacement of the printing plate to the plate cylinder can be facilitated.

  In the printing plate stocker according to the present invention, the printing press is provided with a plate changing operation panel capable of executing a plate changing operation of the printing plate in the plate cylinder, and the printing plate stocker is provided along the printing press. In order to reduce the work load on the worker, the flow line of the worker related to the removal and installation of the printing plate can be shortened as much as possible. can do.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. 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.

  First, a schematic configuration of a printing machine to which the plate stocker according to the present embodiment is applied will be described with reference to FIG. FIG. 2 is a longitudinal sectional view showing a schematic configuration of the printing press.

  As shown in FIG. 2, the printing machine 1 is a sheet-fed printing machine that feeds and prints printing sheets (hereinafter referred to as printing sheets) one by one. A printing unit 3 that prints on the conveyed print sheet, a paper discharge unit 4 that discharges the printed print sheet, and the like. The printing sheets supplied from the paper supply unit 2 are printed by the printing unit 3 and stacked on the paper discharge unit.

  The printing unit 3 is provided with a plurality of printing units 10 for each color to be printed. In the printing machine 1, for example, printing units 10 are provided corresponding to four different colors such as C (cyan), M (magenta), Y (yellow), and BL (black). In the following description, the direction in which the printing sheet travels and the direction in which the printing units 10 are arranged in the printing machine 1 is referred to as a line direction, and is indicated by an arrow L in the figure.

  The printing unit 10 includes a plate cylinder 12 on which a printing plate is mounted, a rubber cylinder (blanket cylinder) 14 in contact with the plate cylinder 12, and a pressure cylinder 16 that applies printing pressure between the rubber cylinder 14. . The printing unit 10 is arranged in the order of the plate cylinder 12, the rubber cylinder 14, and the impression cylinder 16 from the upper side to the lower side in the vertical direction.

  A plate made of a thin aluminum plate or the like is mounted on the outer periphery of the plate cylinder 12. The printing plate is wound around the outer peripheral surface of the plate cylinder 12, and an end portion is fixed by a plate clamping device (not shown), and the plate cylinder 12 is mounted. A printing surface for forming a printed image is formed on the surface of the printing plate. The plate cylinder 12 on which the printing plate is mounted is supplied with ink from an ink supply device (not shown). The ink supplied to the printing plate of the plate cylinder 12 is transferred to the rubber cylinder 14. The ink (printed image) transferred to the rubber cylinder 14 is transferred to a printing sheet that passes between the rubber cylinder 14 and the impression cylinder 16. Note that the printing plate mounted on the plate cylinder 12 is exchanged according to the printed matter (printed image). In the following description, replacement of the printing plate in the plate cylinder 12 is referred to as “plate replacement”.

  Next, the plate stocker according to the present embodiment and the peripheral configuration of the printing unit will be described with reference to FIG. FIG. 1 is a cross-sectional view taken along line AA in FIG. 2 and is a cross-sectional view showing the peripheral configuration of the printing unit.

  As shown in FIG. 1, on one side of the printing unit 10, a plate replacement operation panel 50 is provided for controlling operations related to the replacement of the printing plate. A drive device (not shown) for rotationally driving the plate cylinder 12, the rubber cylinder 14, and the impression cylinder 16 of the printing unit 10 is provided on the plate exchange operation panel 50 side. That is, the above-described plate exchange operation panel 50 is provided on the side of the printing unit 10 that has a driving device (not shown).

  Further, a scaffold 60 is provided on the side having the driving device and the plate exchange operation panel 50 with respect to the printing unit 10 so that an operator can perform work related to plate exchange. The worker can go up the stairs 62 and go up to the scaffolding 60 to control the plate clamping device of the plate cylinder 12 by operating the plate exchange operation, for example, the plate exchange operation panel 50. In addition, a storage table 64 is provided on the scaffold 60, and a column 66 that supports the storage table 64 extends from the scaffold 60.

  Thus, on the scaffold 60, work that is sandwiched between the plate exchange operation panel 50 of the printing unit 10 and the column 66 of the storage table 64 and allows workers to perform work related to plate exchange. A member passage 70 is formed. The worker passage 70 is adjacent to the printing unit 10 and extends in the line direction L (see FIG. 1) along the printing press 1. The worker passage 70 on the scaffold 60 is a work passage on the side where the above-described driving device and the plate exchange operation panel 50 are provided with respect to the printing unit 10. The passage is written. On the other hand, the passage 74 on the opposite side of the drive side work passage 70 across the printing unit 10 is a work passage for operating the printing press 1 that is not related to plate replacement, such as color adjustment. A certain operation side work passage 74 is formed.

  On the scaffold 60, the plate stocker 20 according to the present embodiment is provided. The plate stocker 20 is disposed on the column 66 side of the storage table 64 in the drive side work passage 70. That is, the plate stocker 20 is provided so as to face the plate exchange operation panel 50 across the drive side work passage 70 that is a work passage provided along the printing press 1.

  The printing plate stocker 20 contacts the vertical lower ends of the printing plates S1 and S2 and receives the printing plates S1 and S2. The printing plate stocker 20 is provided vertically above the receiving member 22, has a substantially rod shape, and extends in the horizontal direction. And a support member 30 for supporting the printing plate. The receiving member 22 is fixed to the scaffold 60, and the support member 30 is fixed to the column 66 of the object table 64 via the bracket 26.

  The receiving member 22 has a substantially L-shaped cross section, and extends in the horizontal direction along the drive-side work passage 70. The folds on the L-shaped valley side of the receiving member 22 are fixed to the scaffold 60 so as to face the printing unit 10 side. The receiving member 22 extends in the horizontal direction and in the line direction L (see FIG. 1) along the drive-side work passage 70. In the printing plate stocker 20, the receiving member 22 touches the lower ends of the printing plates S <b> 1 and S <b> 2 in the state of being removed from the plate cylinder 12 (the state before mounting) at the folds on the L-shaped valley side. The plates S1 and S2 are received in contact.

  In addition, the receiving member 22 is good also as what arrange | positions several L-shaped members in the line direction at predetermined intervals. The receiving member 22 may be configured integrally with the scaffold 60.

  The support member 30 is provided vertically above the receiving member 22, and a plurality of support members 30 are provided on the plate exchange operation panel side, that is, on the drive passage 70 side with respect to the receiving member 22. Each support member 30 extends in the same direction as the direction in which the folds on the valley side of the receiving member 22 extend, that is, in the direction along the drive-side work passage 70 in the horizontal direction.

  Next, a detailed configuration of the support member 30 of the plate stocker 20 will be described with reference to FIG. FIG. 3 is a top view illustrating the configuration of the support member, as viewed from the direction indicated by arrow B in FIG. FIG. 4 is a cross-sectional view illustrating the configuration of the support member.

  As shown in FIG. 3, the support member 30 has a substantially rod shape, and is provided in the core member 32 and extends in the horizontal direction along the drive-side work passage 70, and comes into contact with the printing surface of the printing plate. And a contact member 34. The core member 32 is fixed to the bracket 26 extending from the support column 66. The core member 32 can be composed of a rod-shaped member, a pipe (pipe), or the like.

  On the other hand, as shown in FIG. 4, the contact member 34 is configured by an O-ring, that is, an annular rubber ring, and the center of the contact member 34 is mounted through the core member 32 to form the support member 32. Yes. In this way, as shown in FIG. 3, a plurality of contact members 34 are provided on the support member 30 at a predetermined interval in the direction in which the core member 32 extends. The outer surface 34a of the contact member 43 is made of an oil repellent resin. As the oil repellent resin, for example, a fluororesin such as polytetrafluoroethylene (PTFE) can be used.

  As shown in FIGS. 1 and 4, when the vertical lower end of the printing plate S is brought into contact with the receiving member 22 and the printing surface P of the printing plate S is leaned against the support member 30 toward the drive-side work passage 74, The outer surface 34 a of the contact member 34 provided on the support member 30 comes into contact with the printing surface P. Since the outer surface 34a of the contact member 34 is made of an oil-repellent resin, the contact member 34 is not easily soiled by the ink on the printing surface P, and ink attached to the outer surface 34a of the contact member 34 can be easily wiped off. A plurality of such contact members 34 are arranged on the core member 32 to constitute the support member 30. The support member 30 has a substantially rod shape and extends in the horizontal direction to support the printing plate S.

  A plurality of support members 30 configured as described above are arranged in the printing stocker 20 to hold the two printing plates S1 and S2, and the details will be described below with reference to FIG. FIG. 5 is a cross-sectional view showing the arrangement of support members in the plate stocker.

  As shown in FIG. 5, in the printing stocker 20, two supporting members 30 that support the printing plate S1 are provided with a gap H in the vertical direction, and support different portions of the printing plate S1. Similarly, two support members 30B that support the printing plate S2 are also provided with an interval V in the vertical direction. The printing plate stocker 20 can hold the printing plate S1 (S2) without being bent as much as possible by supporting the printing plate S1 (S2) with the two support members 30 (30B).

  Thus, the plate stocker 20 is provided with a pair of support members 30 that support the plate S1 and a pair of support members 30B that support the plate S2. That is, the two support members 30 constitute a set of support members that support the printing plate S1, and the two support members 30B constitute a set of support members that support the plate S2.

  The support member 30 that supports the printing plate S1 and the support member 30B that supports the printing plate S2 are provided with an interval H in a direction orthogonal to both the direction in which the support member 30 (30B) extends and the vertical direction. ing. That is, a plurality of sets of the support members 30 and 30B are provided at intervals H in a direction orthogonal to both the direction in which the support member 30 (30B) extends and the vertical direction. In addition, as shown in FIG. 1, the receiving member 22 which contact | abuts to the vertical lower end of printing plate S1, S2 can be shared by one. In this way, the printing plate stocker 20 can hold the two printing plates S1 and S2, and facilitate plate exchange work such as replacement of the old and new printing plates S1 and S2 to the plate cylinder 12. can do.

  As described above, according to the printing plate stocker 20 according to the present embodiment, the receiving plate 22 that receives the printing plate S in contact with the vertical lower end of the printing plate S and the receiving member 22 are provided vertically above. The support member 30 has a substantially rod shape and extends in the horizontal direction to support the printing plate, and a contact member 34 provided on the support member 30 and in contact with the printing surface P of the printing plate S. Since the contact member 34 provided on the substantially rod-shaped support member 30 contacts and supports the printing plate S, the end portion of the printing plate S with the printing surface P and the plate stocker 20 in contact with each other is minimized. Can be held without damaging its printing surface P as much as possible.

  In the printing plate stocker 20 according to the present embodiment, the outer surface 34 a of the contact member 34 is made of an oil-repellent resin, so that the printing surface P of the printing plate S to which the ink is attached is It is possible to suppress the contact member 34 from being soiled due to contact with the contact member 34.

  In the printing plate stocker 20 according to the present embodiment, two support members 30 are provided at intervals in the vertical direction, and each plate plate S is supported by supporting different portions of the printing plate S. It can be held without bending as much as possible.

  In the plate stocker 20 according to the present embodiment, a plurality of sets of support members 30 and 30B are provided with an interval H in a direction orthogonal to both the direction in which the support member 30 (30B) extends and the vertical direction. Thus, a plurality of printing plates S1 and S2 can be held, and replacement work such as replacement of the printing plates S1 and S2 into the plate cylinder 12 can be facilitated.

  In the printing plate stocker 20 according to the present invention, the printing machine 1 is provided with a plate changing operation panel 50 capable of executing a plate changing operation of the printing plate S in the plate cylinder 12. By providing the work passage 70 provided along the machine 1 so as to face the plate exchange operation panel 50, the flow line of the worker related to the attachment and detachment of the printing plate S is made as short as possible. Thus, the work burden on the worker can be reduced.

  As described above, the plate stocker according to the present embodiment is useful for a printing machine having a plate cylinder.

FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, and is a cross-sectional view illustrating a peripheral configuration of the printing unit according to the present embodiment. It is a longitudinal cross-sectional view which shows schematic structure of the printing machine which concerns on a present Example. FIG. 3 is a top view illustrating a configuration of a support member according to the present embodiment as viewed from a direction indicated by an arrow B in FIG. 2. It is sectional drawing explaining the structure of the supporting member which concerns on a present Example. It is sectional drawing which shows the arrangement | sequence of the supporting member in the printing plate stocker concerning a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printing machine 10 Printing unit 12 Plate cylinder 20 Printing plate stocker 22 Receiving member 30,30B Support member 32 Core member 34 Contact member 60 Scaffold 64 Storage table 66 Post 70 Driving side work path S1, S2 Printing plate P Printing surface

Claims (5)

A printing plate stocker provided in the vicinity of a printing press having a printing cylinder, and holding a printing plate attached to the printing drum or a printing plate removed from the printing cylinder;
A receiving member that receives the printing plate in contact with the vertical lower end of the printing plate;
A support member that is provided vertically above the receiving member, has a substantially bar shape, and extends in the horizontal direction to support the printing plate;
A contact member provided on the support member and in contact with the printing surface of the printing plate;
A printing plate stocker characterized by comprising: In the plate stocker according to claim 1,
A plate stocker characterized in that the outer surface of the contact member is made of an oil-repellent resin. In the plate stocker according to claim 1 or 2,
Two support members are provided at intervals in the vertical direction, and each support member supports a different part of the plate. The printing plate stocker according to any one of claims 1 to 3,
A plate stocker, wherein a plurality of sets of support members are provided at intervals in a direction orthogonal to both the direction in which the support members extend and the vertical direction. In the printing plate stocker according to any one of claims 1 to 4,
The printing machine is provided with a plate exchange operation panel capable of executing a plate exchange operation of the printing plate in the plate cylinder,
The plate stocker is provided so as to face the plate exchange operation panel with a work path provided along the printing press interposed therebetween.

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