JP2019072954A - Gravure printing machine - Google Patents

Abstract

To facilitate replacement of a furnisher roll.SOLUTION: A gravure printing machine includes: a furnisher roll 50 for supplying ink to a plate cylinder 40; and support frames 2, 2 for supporting the rotating furnisher roll 50. The furnisher roll 50 is supported so as to be capable of being attached to and detached from the support frames 2, 2. A roll placing base 7 on which the furnisher roll 50 can be placed is installed while being adjacent to the support frames 2, 2.SELECTED DRAWING: Figure 2

Description

  The disclosed technology relates to a gravure printing press, and in particular to a technology that facilitates the replacement of a finisher roll.

  Examples of documents related to the present technology include the following Patent Document 1 and Patent Document 2.

  Patent Document 1 discloses a cassette carriage capable of transporting a plate cylinder, an ink pan, a finisher roll, and the like when replacing a plate cylinder and the like of a gravure printing press. Rails are laid around the gravure printing machine, and a cassette carriage runs on the rails.

  Patent Document 2 discloses a finisher roll in which a rubber elastic layer is provided around an iron roll and a fluorocarbon resin layer is provided on the surface in order to ensure resistance to a paint containing an organic solvent. ing.

JP-A-9-290496 Japanese Patent Application Laid-Open No. 5-128510

  In the gravure printing press, when changing the color and type of ink, work is performed to replace or wash the plate cylinder and the finisher roll as well as replacing the ink. The longer the time required for these operations, the shorter the time for printing. Therefore, in order to improve the productivity, it is necessary to reduce the work time by reducing the burden of the work and simplifying the work content.

  In that respect, in the gravure printing press of Patent Document 1, the installation of the cassette carriage makes it easy to replace the plate cylinder and the like, so the time required for these operations can be shortened. However, in the method of Patent Document 1, it is necessary to lay a rail around the gravure printing machine and install a plurality of cassette carriages. Therefore, although the method of Patent Document 1 is an auxiliary function to a gravure printing press, it requires large-scale equipment and can not be implemented inexpensively. There is also a disadvantage in that a large space must be secured around the gravure printing press.

  The technology disclosed herein includes a plate cylinder that transfers ink to a web being conveyed by being rotationally driven, and a finisher that supplies ink to the plate cylinder by rotating in contact with the plate cylinder. The present invention relates to a gravure printing press including a roll and a support frame for supporting the rotating plate cylinder and the finisher roll.

  The finisher roll is detachably supported by the support frame, and a roll stand on which the finisher roll can be placed is disposed adjacent to the support frame. Do.

  That is, according to this gravure printing machine, since the supply of the ink to the plate cylinder is performed by the finisher roll, when changing the ink, the ink adhering to the finisher roll is completely removed to a problem-free level Or you need to replace it with a new finisher roll. Since it is difficult to completely remove the ink adhering to the finisher roll and it takes time to remove the ink, it is not necessary to completely remove the ink when replacing the finisher roll, so the working time is It is advantageous to shorten.

  On the other hand, since the finisher roll of this gravure printing press is detachably supported by the support frame, the finisher roll can be replaced. And, since the roll stand on which the finisher roll can be placed is installed adjacent to the support frame, the finisher roll removed from the support frame can be rolled immediately, even if it is not carried away. It can be placed on a cradle.

  In addition, it is good to install two or more roll stands. Then, an unused finisher roll can be placed on one of the roll stands. Then, even if it is not carried in from a distance, a new finisher roll can be attached to the support frame immediately after removing the used finisher roll.

  Therefore, although the configuration is simple, the burden of replacing the finisher roll can be greatly reduced, the finisher roll can be replaced quickly, and the productivity can be improved.

  The roll stand has a base extending in a substantially horizontal direction longer than the finisher roll, and a pair of support portions provided on the base, each of the pair of support portions being the fanny Preferably, the finisher roll is mounted on the roll stand in a non-contact state by receiving a shaft projecting from each end of the shear roll.

  In this case, even a long, difficult-to-handle finisher roll can be placed on the roll stand in a state of a substantially horizontal posture that is easy to support, so replacement work can be performed easily. And since the finisher roll is placed on the roll stand in a non-contact state, it is possible to prevent the finisher roll from being deformed or broken.

  In that case, the pair of support portions is configured by a first support portion located on the side of the support frame, and a second support portion located on the opposite side of the support frame with respect to the first support portion. Preferably, the second support is provided slidably relative to the base.

  Then, if one shaft of the finisher roll is supported by the second support, the operator does not have to support the entire weight of the finisher roll and is easy to handle. And if a finisher roll is pressed in, a 2nd support part will slide and a finisher roll will move on a roll stand. At this time, since the operator hardly needs to move, the operator can work safely and efficiently, and can place the finisher roll on the roll stand in a short time.

  Further, in this case, the finisher roll is supported by the support frame so as to be displaceable between a use position in contact with the plate cylinder and a standby position located away from the plate cylinder, Preferably, a platform is arranged to extend from the vicinity of the end of the finisher roll located at the standby position.

  Since the finisher roll is removed from the support frame when positioned in the standby position, the finisher roll can be placed sideways by arranging the roll carrier in series with the finisher roll positioned in the standby position. By moving a distance about the length in the direction, it is possible to replace the finisher roll. Therefore, the replacement of the finisher roll can be performed efficiently and in a short time.

  The first support portion is provided with a first bearing portion for receiving and supporting one of the shafts from above, and a second bearing portion is for supporting and supporting the other shaft from above on the second support portion. Preferably, the second bearing portion is disposed higher than the first bearing portion.

  The second support can be more easily supported by the second support when the second support is closer to the first support located near the support frame. However, in this case, when the second bearing portion receives the shaft, the first support portion becomes an obstacle. On the other hand, if the second bearing portion is positioned higher than the first bearing portion, the second support portion does not contact the first support portion even if the second support portion is located near the first support portion. The shaft can be easily supported by the second bearing without raising the finisher roll high.

  The finisher roll includes a main body portion provided on the center side, an elastic intermediate portion provided around the main body portion, and a surface portion provided around the intermediate portion and in contact with the plate cylinder It is preferable that the main body portion is made of a carbon fiber reinforced resin and the surface portion is made of a fluorocarbon resin.

  Then, since the carbon fiber reinforced resin main body can reduce the weight while securing the rigidity of the finisher roll itself, the handling of the finisher roll is facilitated. Then, the surface portion made of fluorine resin facilitates the removal of the ink. Therefore, the burden of the replacement work of the finisher roll can be greatly reduced, and the change of the finisher roll can be performed quickly.

  According to the disclosed gravure printing machine, although it is an easy-to-implement simple configuration, the burden of replacing the finisher roll can be greatly reduced and the finisher roll can be replaced quickly, so production is possible. It is possible to improve the quality.

It is the schematic (cross-sectional view seen from the left side) which shows the structure of the gravure printer disclosed by this embodiment. It shows a state where printing is not performed, such as at the time of switching. It is the schematic (figure seen from the front) which shows the structure of the gravure printer disclosed by this embodiment. It shows a state where printing is not performed, such as at the time of switching. It is the schematic (cross-sectional view seen from the left side) which shows the structure of the gravure printer disclosed by this embodiment. It shows the state at the time of printing. It is a schematic sectional drawing of a finisher roll. It is the schematic which shows the roll stand | base seen from the direction of arrow X in FIG. It is a schematic perspective view which shows the structure of a roll stand. It is a figure explaining the flow of exchange work of a finisher roll. (A)-(c) has shown the process in which the removed finisher roll is placed on a roll stand. It is the schematic which shows the modification of a roll stand.

  Hereinafter, embodiments of the present invention will be described in detail based on the drawings. However, the following description is merely illustrative in nature, and does not limit the present invention, its application, or its application.

<Structure of Gravure Printer>
1 and 2 schematically show the configuration of the gravure printing press 1 disclosed in the present embodiment. 1 and 2 show the state of the gravure printing press 1 at the time of switching performed during printing. The state of the gravure printing press 1 at the time of printing is shown in FIG.

  The gravure printing machine 1 is an apparatus for continuously printing an ink (single color) on a web W (print target) to be conveyed. A plurality of gravure printers 1 are arranged in a line along the transport direction of the web W to constitute a gravure printing system, and the web W transported is continuously printed by color in each of the gravure printers 1 Multi-color printing is also possible. By replacing the ink used for the gravure printing machine 1 and the plate cylinder 40, various types of printing can be performed.

  The gravure printing press 1 is installed on the floor surface F so as to extend in the vertical direction, and has a pair of support frames 2 2 facing each other in the left-right direction with a predetermined interval of, for example, 1 m or more and 2 m or less. Between the support frames 2 and 2, related devices such as the ink pan 4, the dryer 10, the guide rolls 20 and 21, the impression cylinder 30, the plate cylinder 40 and the finisher roll 50 constituting the gravure printing machine 1 Are arranged at predetermined positions.

  On the right side of the support frame 2 in FIG. 1, there is a work space S where the operator OP performs work such as replacement of the plate cylinder 40, washing, and input of ink. For convenience, the side where this work space S exists is referred to as "front". In FIG. 2, the front side of the paper is “front”. The directions of front, rear, left, and right are indicated by arrows in each drawing.

  On the right side of the pair of support frames 2 and 2, a box-shaped machine cover 5 containing a drive device and a control device is installed. Further, on the front side of these machine covers 5, a roll stand 7 used for replacing the finisher roll 50 is installed. The roll holder 7 will be described later separately.

  The ink pan 4 is a shallow tray-like container at the bottom of a rectangular shape in top view, which is long in the left-right direction. The upper surface of the ink pan 4 is open. At the time of printing, the ink is stored in the ink pan 4 while being controlled to maintain a predetermined liquid level.

  The ink pan 4 is detachably mounted substantially horizontally on the support base 3 installed on the floor surface F between the support frames 2 and 2. Although details are omitted, the support base 3 is configured to move up and down in a state where the ink pan 4 is placed. Specifically, as shown in FIG. 1, a standby position where the ink pan 4 is located at a lower position away from the plate cylinder 40, and a use position where the ink pan 4 is close to the lower portion of the plate cylinder 40 as shown in FIG. Displace.

(Finisher roll)
The finisher roll 50 is a cylindrical elongated member. As shown in FIG. 4, the finisher roll 50 has a cylindrical main body portion 50a provided on the center side, and an elastic intermediate portion 50b provided around the main body portion 50a, and And a surface portion 50c provided around the middle portion 50b.

  Usually, the main body 50a, which is required to have high rigidity, is made of an aluminum material or the like, but in this gravure printing machine, the main body 50a is made of carbon fiber reinforced resin in order to make it easy to handle. Thus, the finisher roll 50 is reduced in weight while securing high rigidity. The middle portion 50b is made of a cylindrical member made of rubber, and is fixed to the periphery of the main portion 50a by press-fitting and bonding.

  The surface portion 50c is made of a fluorocarbon resin so that the attached ink can be easily removed. A surface portion 50c is provided around the middle portion 50b by press-fitting the middle portion 50b into a thin tubular member made of fluorocarbon resin. As a result, even if the intermediate portion 50b is constantly elastically deformed, partial peeling or reduction of the surface portion 50c can be prevented, and stable quality can be maintained over a long period of time. It is also possible to replace only the surface portion 50c.

  At each of both end portions of the main body portion 50a, an FR support shaft 51 is provided so as to protrude laterally. The center of the FR support shaft 51 coincides with the center of the finisher roll 50. The FR support shafts 51, 51 are supported by the pair of swing arms 52, 52 via the shaft support 52a. Thereby, the finisher roll 50 is rotatable about a rotation axis J1 extending horizontally in the left-right direction.

  The FR support shaft 51 can be removed upward from the shaft support 52a, and can be attached to the shaft support 52a from above. That is, the finisher roll 50 is detachably supported by the support frames 2 and 2.

  Although not described in detail, each swing arm 52 is rotatably supported by each of the left and right support frames 2 and 2. When the swinging arms 52, 52 rotate toward the front side with the work space S, as shown in FIG. 1, the finisher roll 50 is located at a standby position located below and away from the plate cylinder 40. As shown in FIG. 3, the finisher roll 50 is displaced to the use position where the presser roll 50 is in pressure contact with the plate cylinder 40.

  The finisher roll 50 located at the standby position is designed to face the work space S at a height of 50 cm or more and 100 cm or less from the floor surface. By doing so, the operator OP can attach and detach the finisher roll 50 in a relatively easy posture, and the work load is reduced.

  The length of the ink pan 4 in the left-right direction is shorter than the distance between the left and right swing arms 52, 52, and the ink pan 4 moves up and down between the swing arms 52, 52. The length in the left-right direction of the finisher roll 50 is shorter than the length in the left-right direction of the ink pan 4, and the finisher roll 50 can be accommodated in the ink pan 4.

  Thus, at the time of printing, the finisher roll 50 is accommodated in the ink pan 4, and the lower portion of the finisher roll 50 is configured to be immersed in the ink accumulated in the ink pan 4.

  The plate cylinder 40 is a cylindrical long member. On the outer peripheral surface of the printing drum 40, an intaglio 41 constituting a printing surface is formed except for a part of both end portions in the longitudinal direction. The outer diameter of the printing drum 40 is, for example, in the range of 120 mm to 300 mm, and the width of the intaglio 41 is, for example, in the range of 800 mm to 1400 mm. The outer diameter and the lateral width of the printing cylinder 40 are appropriately selected according to the web W to be printed. At the centers of both ends of the printing drum 40, GR support shafts 42 respectively project.

  The GR support shafts 42 and 42 are detachably supported by GR shaft support portions provided on the left and right support frames 2. Although not described in detail, one GR shaft support is connected to a rotary drive controlled by a servomotor (drive-side GR shaft support 43). The rotary drive is housed inside the machine cover 5. The other GR shaft support portion is configured to move forward and backward toward the drive side GR shaft support portion 43 by control (non-drive side GR shaft support portion 44).

  As the non-drive side GR shaft support portion 44 advances, the plate cylinder 40 is supported so as to be rotatable about a rotation axis J2 extending horizontally in the left-right direction. Then, the plate cylinder 40 is rotationally driven at a predetermined speed in a predetermined direction by driving control of the rotation driving unit.

  The impression cylinder 30 is also a cylindrical long member. Similar to the finisher roll 50, the outer peripheral portion of the impression cylinder 30 is also made of an elastic material such as rubber. Each of the finisher roll 50 and the impression cylinder 30 has a length of 40 or more. At the centers of both ends of the impression cylinder 30, a PR support shaft 31 projects. The PR support shafts 31 and 31 are supported by the shaft support 32. Thus, the impression cylinder 30 is rotatable around a rotation axis J3 extending horizontally in the left-right direction.

  Although details will be omitted, the respective pivot support portions 32 are provided on each of the pair of lift arms. Each lift arm is slidably supported in the vertical direction by each of the left and right support frames 2 and 2. When the elevating arms slide, the impression cylinder 30 is separated from the plate cylinder 40 as shown in FIG. 1 in the standby position, and as shown in FIG. Displace to the use position to be pressure-welded.

  During printing, the ink pan 4, the finisher roll 50, and the impression cylinder 30 are controlled to be displaced to the use position. By doing so, the outer peripheral surface of the upper part of the finisher roll 50 which is not immersed in the ink is configured to be in pressure contact with the outer peripheral surface of the plate cylinder 40 obliquely downward on the front side of the plate cylinder 40. (The press-contacting portion between the finisher roll 50 and the plate cylinder 40 is also referred to as a first press-contacting portion 45)

  Further, the lower end portion of the impression cylinder 30 on which the web W is wound is in pressure contact with the upper end portion of the plate cylinder 40, and the outer periphery of the impression cylinder 30 and the outer periphery of the plate cylinder 40 sandwich the web W (The press-contact portion between the impression cylinder 30 and the plate cylinder 40 is also referred to as a second press-contact portion 46).

  In that state, the finisher roll 50 is rotationally driven, and the plate cylinder 40 is rotationally driven (clockwise in FIG. 3) in conjunction with the conveyance of the web W, so that the impression cylinder is interlocked with the rotation. 30 turns.

  Behind the plate cylinder 40, a doctor support device 60 is disposed. The doctor support device 60 is supported by the left and right support frames 2 and 2 so that the doctor blade 61 can be fixed. The doctor blade 61 is a thin, highly rigid, band-shaped member which is longer in the left-right direction than the intaglio 41 of the plate cylinder 40 and is thin.

  At the time of printing, the tip of the doctor blade 61 attached to the doctor support device 60 is brought into pressure contact with the outer peripheral surface of the plate cylinder 40 from the first pressure contact area 45 toward the second pressure contact area 46 near the second pressure contact area 46. Is positioned at

  As a result, when the plate cylinder 40 is rotationally driven during printing, the ink attached to the rotating finisher roll 50 adheres to the outer peripheral surface (the intaglio plate 41) of the plate cylinder 40 at the first pressure contact portion 45. The excess ink adhering to the plate cylinder 40, specifically, the ink protruding from the intaglio 41 is scraped off by the doctor blade 61. As a result, the ink on the intaglio plate 41 is adjusted to an appropriate amount before reaching the second pressure contact portion 46, and the ink is transferred to the web W, whereby printing is performed.

  Above the impression cylinder 30, a plurality of upstream guide rolls 20 guiding downward to the impression cylinder 30 while supporting the web W to be printed by the gravure printing machine 1, and printed out from the impression cylinder 30 A plurality of downstream guide rolls 21 for guiding the web W while supporting the web W are disposed at predetermined positions.

  Each of the upstream guide rolls 20 is disposed at a predetermined position in the vertical direction along the rear side of the support frame 2. Each of the upstream guide rolls 20 is supported by the left and right support frames 2 and 2 so as to be rotatable about a horizontal central axis extending in the left-right direction. By being supported by these upstream guide rolls 20, the web W carried into the upper rear of the gravure printing machine 1 is guided downward along the rear side of the support frame 2, and the printing surface is lowered. In the state of facing to the lower side of the impression cylinder 30, it is wound in a substantially V-shape as viewed from the direction in which the rotation axis J3 extends.

  Each of the downstream guide rolls 21 is disposed at a predetermined position in the vertical direction along the front side of the support frame 2. A portion of the downstream guide roll 21 is disposed inside the dryer 10 installed at the top of the gravure printing press 1.

  The dryer 10 is a device for drying the ink of the printed web W while transporting the web W, and includes a substantially closed rectangular box-shaped dryer cover 11. The dryer cover 11 is disposed between the left and right support frames 2 and 2 so as to extend along the upper front side of the support frame 2. The front portion of the dryer cover 11 projects forward relative to the support frame 2.

  At the lower end of the dryer cover 11, an elongated inlet 14 for receiving the web W is opened. At the upper end of the dryer cover 11, an elongated outlet 15 for delivering the web W is opened. A plurality of downstream guide rolls 21 are disposed in the dryer cover 11 in a line between the inlet 14 and the outlet 15 in the vertical direction.

  Each of the downstream guide rolls 21 is supported by the left and right support frames 2 and 2 and the left and right side walls of the dryer cover 11 so as to be rotatable about a horizontal central axis extending in the left-right direction. By being supported by these downstream guide rolls 21, the printed web W passes through the inside of the dryer 10 with its printing surface directed to the front side, and upward along the front side of the support frame 2. It is supposed to be guided.

  Although the details are omitted, the dryer 10 also has related devices including a blower and a heat exchanger, which circulate and supply the dried warm air to the inside of the dryer cover 11, and these related devices are also provided around the dryer cover 11. It is attached.

  The dryer 10 is spaced apart above the plate cylinder 40 so as to safely and easily replace the plate cylinder 40 and the finisher roll 50. Specifically, the lower end 11a of the dryer cover 11 (specifically, the lower end 11a on the front side facing the work space S) has a height of 1.7 m or more and 2.2 m or less than the floor surface F of the work space S It is arranged to be located.

  Since the average height of a common Japanese adult male is about 1.7 m, by setting the height of the lower end portion 11 a of the drier cover 11 to 1.7 m or more, the operator OP where the drier 10 works The operator OP is designed to work safely. On the other hand, if the height of the lower end portion 11a of the dryer cover 11 exceeds 2.2 m, the overall height of the gravure printing machine 1 becomes too large, and thus the facility for installing the gravure printing machine 1 is limited. is there.

  In order to support and guide the web W coming out of the dryer 10, the plurality of downstream guide rolls 21 disposed at the upper part of the gravure printing press 1 includes a cooling roll 21a that can be cooled. At the time of printing, a refrigerant cooled by a refrigerant circulating and supplying device (not shown) is circulated and supplied to the inside of the cooling roll 21a, and the cooling roll 21a is cooled. The web W heated by the dryer 10 is cooled by being in contact with the outer peripheral surface of the cooling roll 21a.

  The web W printed by the gravure printing machine 1 by being supported and guided by the downstream guide rolls 21 is dried by warm air and cooled, and then, from the top of the gravure printing machine 1 to the front thereof. It will be carried out.

(Roll stand)
When changing the color and type of the ink, an operation of replacing or washing the plate cylinder 40 and the finisher roll 50 is performed along with the replacement of the ink. The longer the time required for these operations, the shorter the time for printing. Therefore, in order to improve the productivity, it is necessary to reduce the work time by reducing the burden of the work and simplifying the work content.

  Therefore, in this gravure printing machine 1, the burden of replacement work of the finisher roll 50 can be greatly reduced, and even if there is only one operator OP, the finisher roll 50 can be replaced quickly. Two roll stands 7 on which the needer roll 50 can be placed are disposed adjacent to the right support frame 2.

  These roll mounts 7, 7 are all the same structure, and are arranged in the vertical direction. One of them is the unloading roll stand 7 used to place the replacement finisher roll 50 (also referred to as used FR 50A) used for printing (the upper side in the illustrated example), The other is a loading roll stand 7 used to place a replacement finisher roll 50 (also referred to as an unused FR 50B) to be newly used for printing (the lower side in the illustrated example).

  Each of these roll supports 7 and 7 is arranged to extend from the vicinity of the end portion located on the right side of the finisher roll 50 located at the standby position to the right side.

  Specifically, each roll stand 7 is disposed to extend substantially horizontally from the support frame 2 on the right side toward the right side. In addition, each roll stand 7 is disposed at a position not to be equal to or excessively higher than the finisher roll 50 positioned at the standby position.

  As shown in FIG. 5 and FIG. 6, each roll stand 7 has a base 70 longer than the finisher roll 50, and a pair of support parts 71 and 72 provided on the base 70. . The base 70 of each roll stand 7 is fixed to the front surface of the right support frame 2 or the machine cover 5 so as to extend in the left-right direction in a substantially horizontal state.

  The base 70 has a longitudinally extending guide rail 70a on its front surface. Two slide blocks 70b are assembled to the guide rail. The slide blocks 70b, 70b are configured to slide smoothly along the guide rails 70a.

  The pair of support portions 71 and 72 is a first support portion 71 located on the right side with the support frame 2 and a second support portion 72 located on the opposite side of the support frame 2 with respect to the first support portion 71, that is, the left side. And consists of. Each of the first support portion 71 and the second support portion 71 is attached to each of the slide blocks 70b.

  Thus, the first support portion 71 and the second support portion 72 are slidable in the left-right direction along the base 70. The first support portion 71 is additionally provided with a stopper 73 for stopping the slide, and the first support portion 71 can be fixed at a desired position of the base 70. Usually, the first support portion 71 is fixed to the base 70 by the stopper 73 so as to be located in the vicinity of the support frame 2.

  Each of the first support portion 71 and the second support portion 72 includes a support piece 80 and a bearing piece 81. The support piece 80 is formed of a plate-like member bent in a substantially L shape, and a lower end portion of the support plate 80 is fixed to the slide block 70b and extends upward from the vertical plate portion 80a. And a portion 80b.

  The bearing piece 81 is formed of a plate-like member, and is erected on the upper surface of the horizontal plate portion 80b with its plate surface directed in the left-right direction. At an upper end portion of the bearing piece 81, a bearing portion 82 cut out in a substantially V-shape is formed along an edge so as to be able to receive and support the FR support shaft 51 from above. The vertical plate portion 80a of the first support portion 71 is formed shorter in the vertical dimension than the vertical plate portion 80a of the second support portion 72, and the bearing portion 82 (second bearing portion 82s) of the second support portion 72 is The first support portion 71 is configured to be positioned higher than the bearing portion 82 (first bearing portion 82f).

  On the right side of the bearing piece 81 of the second support portion 72, a plate member (regulating piece 83) which is opposed with a gap is provided upright. The restricting piece 83 has, at its upper portion, an axial stopper 83a that faces the notch of the second bearing 82s.

  The first bearing 82 f and the second bearing 82 s receive and support the FR support shafts 51 and 51 protruding from the respective ends of the finisher roll 50, whereby the finisher roll 50 is inclined. At the same time, it is placed on the roll stand 7 in a non-contact state (a state where the outer circumferential surface of the finisher roll 50 is located in the air and does not contact other members).

(Funisher roll replacement)
An example of the replacement operation of the finisher roll 50 performed by the gravure printing press 1 will be specifically described.

  The replacement of the finisher roll 50 is performed with the ink pan 4, the impression cylinder 30, and the finisher roll 50 in the standby position, as shown in FIG. 1 and FIG. Prior to the replacement work, the unused FR 50B is placed on the loading roll stand 7. In addition, the first support portion 71 of the unloading roll stand 7 is fixed at a predetermined position near the support frame 2, and the second support portion 72 of the unloading roll stand 7 is in the vicinity of the first support portion 71. It is arranged.

  The operator OP having entered the work space S first removes the ink adhering to the surface by washing away with a solvent or wiping it while rotating the used FR 50A located at the standby position. At this time, since the used FR 50A is replaced, there is no need to completely remove the ink, and since the surface portion 50c of the finisher roll 50 is made of fluorocarbon resin, even if the ink is fixed It can be easily removed and processed in a short time.

  Next, the operator OP removes the FR support shafts 51, 51 from each of the left and right shaft support portions 52a, 52a, lifts the used FR 50A, and removes it from the support frames 2, 2. At this time, the operator OP can lift the used FR 50A in a relatively easy posture, and the main body 50a is made of carbon fiber reinforced resin, and the finisher roll 50 itself is reduced in weight. Therefore, the workload on the operator OP is greatly reduced, and the used FR 50A can be handled safely and quickly.

  Next, as shown in FIG. 7A, the operator OP places the FR support shaft 51 located on the right side of the lifted used FR 50A on the second bearing portion 82s of the unloading roll stand 7 as shown in FIG. . At this time, since the second bearing portion 82s is positioned higher than the first bearing portion 82f, the second bearing portion 51 is not lifted up so that the used FR 50A does not contact the first support portion 71. It can be easily placed on the part 82s. Therefore, even if the first support portion 71 is in the front, the used FR 50A can be handled without any problem.

  Once the FR support shaft 51 is placed on the second bearing portion 82s, the operator OP is easier to handle because it is not necessary to support the entire weight of the used FR 50A. Then, as shown in FIG. 7B, the operator OP pushes the used FR 50A to the right. By doing so, the end of the FR support shaft 51 abuts on the detent 83 a of the restricting piece 83, and the second support 72 slides toward the right. Then, the used FR 50A is moved onto the unloading roll stand 7. At this time, the operator OP does not need to move very much, and only needs to move the hand, so it can work safely and efficiently and can process in a short time.

  Then, as shown in FIG. 7C, when the left FR support shaft 51 of the used FR 50A reaches above the first bearing portion 82f, the operator OP takes the FR support shaft 51 as the first bearing Put it on part 82f. By doing so, the used FR 50A is placed on the unloading roll stand 7.

  The operator OP performs an operation of attaching the unused FR 50B to the support frames 2, 2 subsequently to the operation of removing the used FR 50A. The mounting work may be performed in the reverse of the work for removing the used FR 50A.

  Specifically, the operator OP lifts the left FR support shaft 51 of the unused FR 50B placed on the loading roll stand 7 from the first bearing portion 82f and pulls the unused FR 50B to the left. . Then, since the second support portion 72 slides toward the left side, the unused FR 50B can be easily pulled out from the loading roll stand 7 into the work space S.

  If the second support portion 72 slides close to the first support portion 71, almost all of the unused FR 50B is located in the work space S, so that the operator OP has a comfortable posture and carries the unused FR 50B in a balanced manner. It can be taken up from the support 7 and supported. Then, the operator OP may attach each of the FR support shafts 51 to the left and right shaft support portions 52a and 52a of the unused FRs 50B.

  As described above, according to the gravure printing press 1, the operator OP can replace the finisher roll 50 with almost no movement from the work space S. Since the finisher roll 50 itself is lightweight, and even the long finisher roll 50 is designed to be handled efficiently in an easy posture, the finisher roll 50 The burden of replacement work can be greatly reduced, and replacement of the finisher roll 50 can be performed quickly.

  Note that the disclosed technology is not limited to the above-described embodiment, and includes various other configurations.

  For example, the base portion 70 is disposed in an inclined state so as to be slightly lowered toward the side of the support frame 2 so that the second support portion 72 naturally slides toward the first support portion 71 by its own weight. May be Specifically, as shown in FIG. 8, the base 70 is arranged to be slightly inclined at an inclination angle θ with respect to the horizontal surface SM. Then, when the finisher roll 50 is not placed, the second support portion 72 is always located in the vicinity of the support frame 2, so the handling of the roll stand 7 becomes easy. There is also an advantage that the first support portion 71 is less likely to get in the way when the finisher roll 50 is placed.

  The roll holder 7 is not limited to two. One or three or more may be installed. However, since two new and old two finisher rolls 50 can be placed, two are preferable. Although the embodiment is preferable from the viewpoint of work efficiency, the pair of support portions 71 and 72 of the roll stand 7 may be fixed at a predetermined position of the base 70. Further, the roll stand 7 may be disposed so as to extend in the front-rear direction or the oblique direction depending on the specification without being limited to the left-right direction.

DESCRIPTION OF SYMBOLS 1 Gravure printing machine 2 Support frame 4 Ink pan 5 Machine cover 7 Roll placing stand 10 Dryer 30 Pressure cylinder 40 Plate cylinder 50 Finisher roll 51 FR support shaft 52 Swing arm 61 Doctor blade 70 Base 71 First support portion 72 Second Supports J1, J2, J3 Rotation axis F Floor surface OP Operator S Work space W Web

Claims (6)

A plate cylinder that transfers ink to a web being conveyed by being rotationally driven;
A finisher roll for supplying ink to the plate cylinder by rotating in contact with the plate cylinder;
A support frame for supporting the rotating plate cylinder and the finisher roll;
A gravure printing machine equipped with
The finisher roll is detachably supported by the support frame,
The gravure printing machine by which the roll stand which can mount the said finisher roll is installed adjacent to the said support frame. In the gravure printing machine according to claim 1,
The roll stand is
A substantially horizontally extending base longer than the finisher roll;
A pair of support parts provided on the base;
Have
The gravure printing in which the said finisher roll is mounted in the said roll stand in a non-contact state by receiving the axis | shaft which protrudes from each edge part of the said finisher roll of each of a pair of support parts. Machine. In the gravure printing machine according to claim 2,
The pair of support portions is configured of a first support portion located on the side of the support frame, and a second support portion located on the opposite side of the support frame with respect to the first support portion,
The gravure printing machine in which the said 2nd support part is provided slidably with respect to the said base. In the gravure printing machine according to claim 3,
The finisher roll is supported by the support frame so as to be displaceable between a use position in contact with the plate cylinder and a standby position located away from the plate cylinder.
The gravure printing press, wherein the roll stand is arranged to extend from the vicinity of the end of the finisher roll located at the standby position. In the gravure printer according to claim 3 or 4,
The first support portion is provided with a first bearing portion for receiving and supporting one of the shafts from above, and a second bearing portion is for supporting and supporting the other shaft from above on the second support portion. Provided,
A gravure printing press, wherein the second bearing portion is positioned higher than the first bearing portion. The gravure printing machine according to any one of claims 1 to 5.
The finisher roll includes a main body portion provided on the center side, an elastic intermediate portion provided around the main body portion, and a surface portion provided around the intermediate portion and in contact with the plate cylinder And have
The gravure printing machine, wherein the main body portion is made of carbon fiber reinforced resin, and the surface portion is made of fluorocarbon resin.

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