JP2010120285A - Cylinder lifting device of printing press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder lifting device of a printing press, which is simply structured, and which can not only receive such force favorably but also can perform a necessary operation quickly even when a greater reactive force comes from a paper. <P>SOLUTION: The cylinder lifting device of a printing press, including a surface treatment portion 1A which conducts surface treatment of a printing paper delivered by the cylinder 1B, switchingly enables a close position wherein the surface treatment portion 1A is positioned close to the cylinder 1B for conducting the surface treatment and a retract position wherein it is positioned apart from the cylinder 1B, having a stopper 20 which enables switching between the lock position wherein the surface treatment portion 1A in the close position is stopped from moving to the side apart from the cylinder 1B and the lock release position wherein the surface treatment portion 1A is allowed to move to the retract position form the close position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a surface treatment unit that performs a surface treatment of printing paper conveyed by a cylinder, an approach position where the surface treatment unit is brought close to the cylinder to perform surface treatment, and a retracted position separated from the cylinder It is related with the cylinder raising / lowering apparatus of the printing machine comprised so that switching was possible.

  As a cylinder raising / lowering device for a printing press having the above-described configuration, for example, a device capable of raising and lowering a covering material adhering fabric roller capable of covering a moving web material (paper) with a covering material has already been proposed.

  As described above, there is an advantage that maintenance and the like can be easily performed by moving the cloth roller for attaching the covering material up and down to a retreat position that is largely separated from the blanket cylinder. As a specific configuration for positioning in the retracted position, a slide shaft for moving the base frame in the horizontal direction is provided, including a hydraulic cylinder that moves up and down a base frame to which a covering material adhesion fabric roller is attached. It has.

Therefore, by repeatedly raising and lowering the base frame and moving in the horizontal direction a plurality of times, the cloth roller for adhering the covering material is brought close to the blanket cylinder so that the paper is covered with the approach position and the blanket cylinder. It is configured so that it can be switched to a separated retracted position (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 64-45638 (see FIGS. 1 and 2)

  The configuration of Patent Document 1 requires a hydraulic cylinder that moves the base frame up and down and a slide shaft that moves the base frame in the horizontal direction.

  Further, in Patent Document 1, when a paper having a thickness larger than the gap is supplied to the gap between the cloth roller for covering material and the blanket cylinder at the approach position of the cloth roller for covering material, the covering material adheres. Blocking means for blocking the fabric roller from being largely separated from the blanket cylinder by receiving a reaction force from the paper is provided. The blocking means includes a stud bolt provided on the surface of the support bar that receives the base frame, and a nut that is screwed onto the stud bolt. Specifically, when the covering material adhering fabric roller is positioned at the approach position, the stud bolt of the support bar penetrates the through hole of the base frame. The base frame can be fixed to the support bar by screwing a nut onto the upper end of the stud bolt protruding from the base frame.

  However, once the base frame is fixed to the support bar as described above, the covering material adhering fabric roller cannot be switched from the approach position to the retracted position. For this reason, when the covering material adhering fabric roller is switched from the approach position to the retracted position, the screwed nuts must be loosened and the stud bolts must be removed, resulting in very poor operability.

  In view of the above-described situation, the present invention intends to solve the problem with a simple configuration, even when a large reaction force from the paper is applied, while allowing the large reaction force to be satisfactorily received. It is an object of the present invention to provide a cylinder lifting device for a printing press that can perform the above operation quickly.

  The cylinder lifting device of the printing press according to the present invention includes a surface treatment unit that performs surface treatment of printing paper conveyed by the cylinder, and an approach position that performs surface treatment by bringing the surface treatment unit closer to the cylinder; A cylinder lifting / lowering device of a printing press configured to be switchable to a retracted position separated from a cylinder, wherein the surface treatment unit at the approaching position is prevented from moving toward the retracted position, and the surface A stopper that can be repositioned at a lock release position that allows the processing section to move from the approach position to the retracted position, and the stopper is on an extension line that connects the center of rotation of the barrel and the center of the surface processing section. It is characterized by being arranged in the vicinity of the extension line.

When the surface treatment unit moves from the approach position to the retraction position, while the stopper can surely prevent the surface treatment unit from moving to the retraction position side at the approach position, it moves from the lock position to the lock release position. The surface treatment unit can be moved from the approach position to the retracted position simply by changing the position of the stopper.
In addition, since the stopper is disposed on or near the extension line connecting the rotation center of the cylinder and the center of the surface treatment portion, for example, the gap between the surface treatment portion and the cylinder is larger than the gap. Even when a large amount of reaction force from the sheet is applied to the surface treatment unit, it can be efficiently and reliably received by a stopper disposed at or near the position where the large reaction force acts. .

  Further, the cylinder lifting device of the printing press according to the present invention includes a position adjustment for preventing the surface treatment unit from further moving in the same direction upon completion of switching of the surface treatment unit from the retracted position to the approaching position. By providing the member, not only can the surface treatment unit be surely positioned at a desired approach position, but also the paper is supplied to the gap between the surface treatment unit and the cylinder, and the surface treatment is performed by reaction force from the paper. After the part moves to the side away from the cylinder, the position adjustment member can reliably receive it when it is returned again to the side approaching the cylinder, so the surface treatment part repeats approaching and separating from the cylinder, etc. There is an advantage that can suppress the occurrence of.

  The cylinder lifting device of the printing press according to the present invention includes a fluid pressure cylinder that switches the stopper between a lock position and a lock release position, and connects the fluid pressure cylinder and the stopper via a link mechanism. And if this link mechanism is comprised with the toggle mechanism provided with a pair of toggle link, the thrust action by a toggle mechanism can be exhibited and the stopper action by a stopper can be strengthened.

  Further, in the cylinder lifting device of the printing press according to the present invention, one end of the stopper is swingably attached via a rotation shaft, one end of the link mechanism is connected to the other end of the stopper, and the rotation shaft is If it is configured with an eccentric shaft, it is possible not only to adjust the swinging position of the stopper but also to absorb manufacturing errors and the like only by changing the rotational position of the rotating shaft.

When the surface treatment unit moves from the approaching position to the retracted position while the stopper can surely prevent the surface treatment unit from moving to the retracted position at the approaching position, the lock position is changed to the unlocking position. Since it is only necessary to change the position of the stopper, even if a large reaction force from the paper is applied with a simple configuration, the large reaction force can be satisfactorily received by the stopper, but the operation for the stopper for that purpose is also possible. It is possible to provide a cylinder lifting and lowering device for a printing press that can quickly perform the operation.
Moreover, since the stopper is disposed on or near the extension line connecting the rotation center of the cylinder and the center of the surface treatment portion, even if a large reaction force from the paper acts on the surface treatment portion, A stopper disposed at a position where a large reaction force acts or a position near the position can be received efficiently and reliably, and a cylinder lifting and lowering device for a printing press with high reliability can be obtained.

In FIG. 1, a varnish application unit 1 is incorporated as a surface treatment unit for applying (coating) a resin varnish (also referred to as varnish) for giving gloss to the printing surface of a printed printing paper. 1 shows an example of a printing press. This printing machine includes a paper stack 2, a paper feed unit 4 for feeding print sheets from the paper stack 2 by the feeder device 3 one by one, and five colors on the print paper P delivered from the paper feed unit 4. A printing section 5 for performing printing, the varnish application section 1 for applying an ultraviolet curable resin varnish to the printing paper printed by the printing section 5, and an ultraviolet curable resin varnish applied by the varnish application section 1. A paper discharge unit 6 for conveying and discharging the printed paper, and a UV curable resin varnish of the print paper provided in the paper discharge unit 6 and conveyed by the paper discharge unit 6. And an ultraviolet drying device 7. Here, the printing unit 5 including five printing units 5A to 5E so that five colors can be printed is shown, but a printing unit that can print colors other than five colors, that is, one color or two or more colors. It may be. Further, although the paper discharge unit 6 is constituted by a chain conveying device provided with a gripper, it may be a printing machine without this paper discharge unit 6, or the specific parts of each part constituting the printing machine. The configuration is not limited to that shown in the figure. Further, although a sheet is used as the printing paper, a continuous long paper may be used. Furthermore, the varnish application part 1 may apply an aqueous varnish (aqueous varnish) in addition to applying an ultraviolet curable resin varnish. In this case, the aqueous varnish applied by the infrared drying apparatuses 8A and 8B provided before and after the ultraviolet drying apparatus 7 in the printing paper conveyance direction is dried.

  The printing units 5A to 5E include printing impression cylinders 5a to 5e, and transfer cylinders for passing printing paper to each printing impression cylinder on the upstream side in the transport direction of the printing impression cylinders 5a to 5e. 9a-9e are provided. Of the transfer cylinders 9a to 9e, the transfer cylinder 9a having a small diameter located on the starting end side in the conveying direction is also referred to as a paper supply cylinder. The transfer cylinder 9a and the feeder device 3 constitute the paper supply unit 4. ing. Although not shown, each of the cylinders 5a to 5e and the transfer cylinders 9a to 9e has grippers for gripping the fed printing paper with nail bases and claws at a plurality of circumferential positions (one place). But may be). The transfer cylinder 9a having a small diameter is also provided with a gripper for gripping the printing paper with the nail base and the nail at one place in the circumferential direction, although not shown.

  The varnish application part 1 includes a varnish cylinder 1A to which an ultraviolet curable resin varnish is supplied and a varnish supply roller 10 for supplying the ultraviolet curable resin varnish to the varnish cylinder 1A, and below the varnish cylinder 1A. Is provided with a varnish impression cylinder 1B for constituting a cylinder for transporting printed printing paper and for applying an ultraviolet curable resin varnish by pressing. Then, one of the varnish impression cylinder 1B and the varnish cylinder 1A (varnish cylinder 1A) arranged opposite to each other is brought close to the other cylinder (varnish impression cylinder 1B), and an approach position for performing the surface treatment, Elevating means for switching to a retracted position separated from the body is provided on each of the left and right sides. Next, the elevating means will be described in detail. A transfer cylinder 1G for transferring printing paper to the varnish impression cylinder 1B is also provided on the upstream side in the transport direction of the varnish impression cylinder 1B. Gripper gripped by the nail is provided at a plurality of locations in the circumferential direction (or 1 location).

  As shown in FIG. 2, the elevating means includes an electric motor 11 serving as a drive source for moving the varnish cylinder 1A to the approach position and the separation position, a rotating member 12 rotated by the electric motor 11, And a meshing member 14 that meshes with the rotating member 12 to convert the rotational motion of the rotating member 12 into a linear motion, and is connected to an elevating frame 13 that rotatably supports the varnish cylinder 1A. In addition to the varnish cylinder 1A, the varnish supply roller 10 is also rotatably supported by the elevating frame 13, and the varnish supply roller 10 can be moved up and down together with the varnish cylinder 1A.

  The rotating member 12 is a ball screw, and the meshing member 14 is a ball nut screwed to the ball screw 12. The ball screw 12 is disposed in a vertical direction in which the longitudinal direction thereof is a forward inclined posture in which the longitudinal direction thereof is slightly inclined forward with respect to the transport direction, and is rotatably supported by the support frame 15 on the fixed side. The ball nut 14 is non-rotatably connected to the elevating frame 13 via an attachment member 16. Therefore, by driving the electric motor 11, the ball screw 12 is rotated, and the ball nut 14 is moved in the longitudinal direction of the ball screw 12 by this rotation, and the lifting frame 13 is moved up and down.

  The ball nut 14 is disposed in the vicinity of an extension line connecting the rotation center X2 of the varnish impression cylinder 1B and the rotation center X1 of the varnish cylinder 1A.

  The electric motor 11 is arranged in a horizontal direction, and the ball screw 12 is arranged in a vertical direction orthogonal to the electric motor 11. Thus, by arrange | positioning the electric motor 11 to a horizontal direction, it can suppress that the whole apparatus enlarges to the vertical direction. Then, by connecting the electric motor 11 and the ball screw 12 via the worm gear mechanism 17, the self-lock function of the worm gear mechanism 17 can be exhibited and the reverse rotation of the electric motor 11 can be reliably prevented.

  The worm gear mechanism 17 includes a worm 17A that is externally fitted to the output shaft of the electric motor 11, and a worm that is externally fitted to the upper end of the ball screw 12 while meshing with the worm 17A. It is comprised from the wheel 17B.

  By operating the lifting device configured as described above, as shown in FIG. 2 and FIG. 4, an approach position where the varnish cylinder 1A is brought close to the varnish impression cylinder 1B and the varnish is applied to the printing paper surface; As shown in FIG. 5, the varnish cylinder 1 </ b> A can be separated from the varnish cylinder 1 </ b> B by a set distance and switched to a state where no varnish is applied or a retreat position where equipment maintenance or the like is performed.

  Guide means 18 and 19 are provided on both sides of the elevating frame 13 in the left-right width direction so as to move and elevate the elevating frame 13 so that the elevating frame 13 can be moved toward and away from each other.

  2, 4 and 5, the one guide means 18 located on the right side is a guide rail for moving and guiding the elevating frame 13, and the other one located on the left side in FIGS. 2, 4 and 5. The guide means 19 is a pair of upper and lower guide rollers 19A and 19B arranged in contact with the elevating frame 13.

  The guide rail 18 is a fixed-side guide rail portion 18A attached to the support frame 15, and a movable-side guide rail portion 18A attached to the elevating frame 13 so as to move up and down by engaging with the guide rail portion 18A. It consists of a guide rail portion 18B.

  The rollers 19A and 19B are rotatably disposed in recesses (not shown) formed in the support frame 15, and the outer peripheral surfaces of the rollers 19A and 19B are in contact with the left side surface of the elevating frame 13. Like to maintain. Accordingly, when the elevating frame 13 is raised and lowered, the rollers 19A and 19B rotate and guide the elevating frame 13 while rotating.

  A stopper 20 that can be repositioned between a lock position that prevents the varnish cylinder 1A in the approaching position from moving toward the retracted position and a lock release position that allows the varnish cylinder 1B to move from the approaching position to the retracted position. I have.

  The stopper 20 is disposed in the vicinity of an extension line connecting the rotation center X2 of the varnish impression cylinder 1B and the center X1 of the varnish impression cylinder 1A. For example, the gap between the varnish impression cylinder 1A and the varnish impression cylinder 1B is larger than the gap. Even if a thick printing paper is supplied and a large reaction force from the printing paper acts on the varnish cylinder 1A, it can be efficiently and reliably received by the stopper 20 disposed in the vicinity where the large reaction force acts. it can.

  When the switching of the varnish cylinder 1A from the retracted position to the approach position is completed, the varnish cylinder 1A moves toward the side approaching the varnish impression cylinder 1B (moves radially inward of the varnish impression cylinder 1B). The support frame 15 is provided with a position adjusting member 30 for blocking, so that the varnish cylinder 1A can be surely positioned to a desired approach position, and paper is supplied to the gap between the varnish cylinder 1A and the varnish impression cylinder 1B. Then, after the varnish cylinder 1A moves to the side away from the varnish impression cylinder 1B due to the reaction force from the paper, the position adjusting member 30 reliably receives it when it is returned again to the side approaching the varnish impression cylinder 1B. Therefore, it is possible to suppress the occurrence of hunting or the like in which the varnish cylinder 1A repeatedly approaches and separates from the varnish impression cylinder 1B.

  As shown in FIGS. 6A, 6 </ b> B, and 6 </ b> C, the position adjusting member 30 is disposed in a concave portion 15 </ b> A formed in the support frame 15, and a lower end surface 13 </ b> A of the elevating frame 13 contacts. This prevents the varnish cylinder 1A from moving toward the side approaching the varnish impression cylinder 1B. The position adjusting member 30 includes a cube-shaped contact member 30A fixed to the vertical wall 15a constituting the recess 15A by a pair of bolts B and B, and a bottom whose lower end forms the recess 15A in the contact member 30A. The vertical position (vertical position) of the contact member 30A with respect to the recess 15A can be adjusted by rotating from above using a tool such as a hexagon wrench so as to contact the wall 15b. The screws 30B, 30B and the screws 30C, 30C contacting the screws 30B, 30B from a direction orthogonal to the screws 30B, 30B are provided to fix the screws 30B, 30B at a predetermined height position. In the contact member 30A, longitudinal elongated holes 30K, 30K for allowing the contact member 30A to move in the longitudinal direction with respect to the bolts B, B are formed.

  Therefore, after loosening the bolts B and B and the screws 30C and 30C, and using a tool such as a hexagon wrench to lock the screws 30B and 30B in the hexagon holes from above, the screws 30B and 30B are rotated. The vertical positions of the screws 30B and 30B with respect to the contact member 30A are adjusted. After this adjustment, the screws 30B and 30B are fixed by contacting the screws 30B and 30B by rotating the screws 30C and 30C from the front using a tool such as a hexagon wrench. Subsequently, the contact member 30A is fixed to the vertical wall 15a by the bolts B and B, and the position adjustment of the position adjustment member 30 is completed.

  2, 4, and 5, the stopper 20 is configured to be switchable between a lock position and a lock release position by an air cylinder 23 that is a fluid pressure cylinder. And the air cylinder 23 and the stopper 20 are connected via the link mechanism. The link mechanism is composed of a toggle mechanism having a pair of toggle links 21 and 22, and in a state in which the varnish cylinder 1A is located at the approach position, it exerts a tension action by the toggle mechanism and is a stopper by a stopper. The action can be strengthened. That is, as shown in the enlarged view of FIG. 2, each of the two links 21 and 22 is inclined so as to be located rearward as it goes to the other end portion on the side away from the pivot shaft g connecting them. The two links 21 and 22 are configured to be substantially V-shaped. In the enlarged view of FIG. 2, the angles of the two links 21 and 22 are exaggerated for easy understanding.

  One end of the stopper 20 is swingably attached via a rotating shaft 32 fixed to the support frame 15. Then, one end of the link mechanism is connected to the other end side of the stopper 20, and the rotation shaft 32 is formed of an eccentric shaft, so that the rotation position of the rotation shaft 32 can be changed by simply changing the rotation position of the rotation shaft 32. Not only can it be adjusted, but also manufacturing errors can be absorbed.

  The link mechanism includes a first link 21 having one end connected to the stopper 20, and a second link having one end connected to the first link 21 and the other end connected to the tip of the operation rod 23 </ b> A of the air cylinder 23. And a link 22. Therefore, by operating the extension of the air cylinder 23, the stopper 20 is swung downward to lock the stopper 20 against the bent piece 13A at the upper end of the lifting frame 13 as shown in FIGS. It is possible to prevent the varnish cylinder 1A from moving upward away from the varnish impression cylinder 1B. In the case of a retracted posture in which the elevating frame 13 is raised, before the elevating frame 13 starts to rise, the air cylinder 23 is shortened to swing the stopper 20 upward. As shown in FIG. 5, the lift frame 13 can be retracted to the unlock position where there is no hindrance.

  When the elevating frame 13 is located at a preset ascending position and descending position, the driving of the electric motor 11 is stopped. Specifically, the lifting frame 13 includes a detection piece 24, and the support frame 15 includes an upper limit detection sensor 25 and a lower limit detection sensor 26 that detect the passage of the detection piece 24 as the lifting frame 13 moves up and down. A control unit (not shown) for controlling the driving of the electric motor 11 based on detection information from the detection sensor 25 and the lower limit detection sensor 26 is provided.

  3 is a varnish supply device for supplying varnish to the varnish supply roller 10, and an element indicated by reference number 29 is a varnish supplied from the varnish supply device 28 to the varnish supply roller 10. It is a varnish tray for receiving the surplus of below.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, in the above-described embodiment, the ball screw 12 constituting the lifting means is added to the stopper 20 in addition to the configuration in which the varnish cylinder 1A positioned at the approach position is prevented from moving to the side away from the varnish impression cylinder 1B. And the ball nut 14 meshed therewith can prevent the varnish cylinder 1A from moving to the side away from the varnish impression cylinder 1B, thereby strengthening the blocking force. It may be constituted by a wire or the like.

  Moreover, in the said embodiment, although the stopper 20 was comprised from the rocking | fluctuation type | mold, in addition to comprising a slide type, the stopper 20 is attached to the front-end | tip of expansion-contraction actuators, such as a fluid pressure cylinder or an electric motor, The stopper 20 may be configured to be directly movable by an actuator.

  In the above embodiment, the stopper 20 is disposed in the vicinity of the extension line connecting the rotation center X2 of the varnish impression cylinder 1B and the rotation center X1 of the varnish cylinder 1A. The reaction force from the printing paper can be received even more reliably.

  Moreover, in the said embodiment, although the ball nut 14 and the varnish cylinder 1A were connected via the raising / lowering flame | frame 13, you may connect directly to the edge part of the varnish cylinder 1A. In this case, only the varnish cylinder 1A is moved up and down.

  Moreover, in the said embodiment, as shown in FIG. 3, although the raising / lowering apparatus was each provided in the both sides of varnish cylinder 1A, the raising / lowering guide was provided in one side of varnish cylinder 1A, and the drive part was provided in the other side of varnish cylinder 1A. The support member that supports both ends of the varnish cylinder 1A is extended to the center in the left-right direction of the varnish cylinder 1A to constitute an arch-type support member, You may implement by providing the single raising / lowering apparatus which lifts up the right-and-left center part of this arch type support member.

  The present invention can be applied to a varnish-coated one, and a surface treatment for increasing the added value of a printing surface by transferring a gold foil, an embossed pattern, a hologram pattern or the like by pressing a transfer film on the surface of a printing paper. It can also be applied to those provided with a portion.

It is a side view which shows schematic structure of an example of a printing machine. It is an enlarged side view of a varnish application part. It is a vertical front view of a varnish application part. It is the side view which expanded further the varnish application part shown in FIG. 2, and abbreviate | omitted one part. It is a side view which shows the state which raised the raising / lowering frame of the varnish application part shown in FIG. The specific structure of a position adjustment member is shown, (a) is the side view, (b) is the top view, (c) is the front view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Varnish application part, 1A ... Varnish cylinder, 1B ... Varnish impression cylinder, 2 ... Paper stacking board, 3 ... Feeder apparatus, 4 ... Paper feed part, 5 ... Printing part, 5A-5E ... Printing unit, 5a-5e ... Printing cylinder, 6 ... paper discharge unit, 7 ... ultraviolet drying device, 8A, 8B ... infrared drying device, 9a to 9e ... transfer cylinder, 10 ... varnish supply roller, 11 ... electric motor, 12 ... rotating member, 13 ... Elevating frame, 13A ... bent piece, 14 ... meshing member (ball nut), 15 ... support frame, 15A ... recess, 15a ... vertical wall, 15b ... bottom wall, 16 ... mounting member, 17 ... worm gear mechanism, 17A ... worm , 17B ... Worm wheel, 18 ... Guide means (guide rail), 18A, 18B ... Guide rail section, 19 ... Guide means, 19A, 19B ... Guide roller, 20 ... Stopper, 21, 22 ... Link, 23 ... Air cylinder 23A ... Operating rod, 24 ... Detection piece, 25 ... Upper limit detection sensor, 26 ... Lower limit detection sensor, 28 ... Virgin supply device, 29 ... Vnish receiving plate, 30 ... Position adjustment member, 30A ... Contact member, 30B, 30C ... Bis 32: Rotating shaft, B: Bolt, P: Printing paper, X1, X2 ... Center of rotation

Claims (4)

Provided with a surface treatment unit that performs surface treatment of printing paper conveyed by a cylinder, the surface treatment unit can be switched between an approach position for performing surface treatment by approaching the cylinder and a retracted position separated from the cylinder A cylinder lifting and lowering device for a printing press, comprising:
A stopper whose position can be changed between a lock position that prevents the surface treatment unit from moving toward the retracted position in the approach position and a lock release position that allows the surface treatment unit to move from the approach position to the retracted position. And a stopper ascending / descending apparatus, wherein the stopper is disposed on an extension line connecting the rotation center of the cylinder and the center of the surface treatment unit or in the vicinity of the extension line.   The printing press according to claim 1, further comprising a position adjusting member for preventing the surface treatment unit from further moving in the same direction when the surface treatment unit is completely switched from the retracted position to the approach position. Body lifting device.   A fluid pressure cylinder for switching the stopper between a lock position and a lock release position is provided, the fluid pressure cylinder and the stopper are connected via a link mechanism, and the link mechanism includes a pair of toggle links. 3. A cylinder lifting / lowering device for a printing press according to claim 1, wherein the cylinder lifting / lowering device is a toggle mechanism.   One end side of the stopper is swingably attached via a rotating shaft, one end of the link mechanism is connected to the other end side of the stopper, and the rotating shaft is an eccentric shaft. Item 4. A cylinder lifting device for a printing press according to Item 3.

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