JP2019034469A - Method for manufacture of cylinder roll for gravure printing, and method for regeneration of cylinder roll for gravure printing - Google Patents

Abstract

To provide a method for manufacture of a cylinder roll for gravure printing by which a strength of a plating layer, which forms an intaglio plate, can be sufficiently assured.SOLUTION: This method includes: a step at which a recess is formed in the whole of at least an area, which forms an intaglio plate, in an outer peripheral surface of a cylindrical cylinder; a step at which plating of at least the area, in which the recess is formed, in the outer peripheral surface of the cylinder is performed, and a plating layer, which embeds the recess and is extended to an outer side with respect to the recess, is formed; and a step at which at least one of cutting and polishing of an outer peripheral surface of the plating layer is performed, and the outer peripheral surface is so made as to be a finished surface.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a method for producing a cylinder roll for gravure printing and a method for regenerating a cylinder roll for gravure printing.

  Generally, a cylinder roll used for gravure printing includes a cylindrical cylinder and a plating layer covering the outer periphery of the cylinder, and an intaglio corresponding to the printing design is formed on the outer peripheral surface of the plating layer.

  This kind of cylinder roll is regenerated so that another design can be printed when printing of a predetermined quantity (predetermined lot) is completed.

  Specifically, in this type of cylinder roll, when a predetermined amount of printing is completed, the plating layer is removed (peeled), and the outer peripheral surface of the cylinder exposed by this removal is plated. And the outer peripheral surface of a new plating layer is grind | polished, and it is set as the finishing surface with few unevenness which can form an intaglio, or an unevenness | corrugation.

  Along with this, the outer peripheral surface of the cylinder is finished to a surface with little or no unevenness so that the plating layer can be easily peeled off from the cylinder at the time of manufacturing and recycling of this type of cylinder roll. The surface is plated (see, for example, Patent Document 1).

  However, the cylinder roll manufactured by the above manufacturing method and the cylinder roll regenerated by the above regenerating method are affected by the force acting on the plating layer (the influence of the pressure contact force on the intaglio and the force accompanying the polishing process during printing), There is a possibility that the plating layer may be peeled off from the outer peripheral surface of the cylinder or the plating layer may be broken. In other words, in the conventional manufacturing method and recycling method, the outer surface of the cylinder roll is formed in order to finish the surface covered with the plating layer in the cylinder into a smooth surface in consideration of peeling the plating layer from the cylinder during recycling. When a radial force acts on (the outer peripheral surface of the plating layer), a sliding action may occur at the interface between the cylinder and the plating layer, and the plating layer may be damaged. Therefore, in the cylinder roll obtained by the conventional manufacturing method and recycling method, the rigidity of the surface on which the intaglio is formed is not sufficient.

JP 2004-58347 A

  Then, this invention makes it a subject to provide the manufacturing method of the cylinder roll for gravure printing which can fully ensure the intensity | strength of the plating layer which forms an intaglio, and the manufacturing method of the cylinder roll for gravure printing.

  The method of manufacturing a cylinder roll for gravure printing according to the present invention includes forming a recess in the entire area corresponding to the area where the intaglio is formed on the outer peripheral surface of the cylindrical cylinder, and at least the recess on the outer peripheral surface of the cylinder. A plating process is performed on the formed region to form a plating layer that fills the recess and protrudes to the outside of the recess, and at least one of cutting and polishing is performed on the outer peripheral surface of the plating layer. And applying the outer peripheral surface to a finished surface.

  According to such a manufacturing method, since the recess is formed in the entire region corresponding to the region where the intaglio is formed on the outer peripheral surface of the cylinder, the surface area of the outer peripheral surface of the cylinder is less uneven or less uneven. Compared to the case where the surface is not processed, the width is significantly increased. Therefore, when the plating layer is formed on the region where the recess is formed, the outer peripheral surface of the cylinder is plated on a surface with little or no unevenness, even for the area where the cylinder and the plating layer are in close contact with each other. Compared to the case where the layer is formed, the width is significantly increased.

  Thereby, the connection strength of a cylinder and a plating layer increases. Furthermore, since the plating layer fills the recesses, the plating layer is prevented from being damaged when performing cutting or polishing or printing to make the outer peripheral surface of the plating layer a finished surface. Is done. That is, when the radial force of the cylinder acts on the plating layer, even if the plating layer is deformed or displaced in the direction intersecting the direction of the force, the portion where the concave portion of the plating layer is buried is The relative movement between the plating layer and the cylinder is restricted.

  This prevents the plating layer from peeling or cracking from the cylinder when forming a finished surface on the plating layer or during printing.

  As one aspect of the method of manufacturing a cylinder roll for gravure printing according to the present invention, a plurality of endless annular grooves extending in the circumferential direction of the cylinder are arranged in the axial direction of the cylinder roll. Forming may also be included.

  According to this manufacturing method, since the endless annular groove extending in the circumferential direction of the cylinder is formed side by side in the axial direction of the cylinder roll with respect to the outer circumferential surface of the cylinder, the outer circumferential surface of the cylinder is in the axial direction of the cylinder. It becomes uneven. Accordingly, the plating layer is formed in a state in which grooves (concave portions) are filled at a plurality of locations in the axial direction of the cylinder. Accordingly, when a force in the radial direction of the cylinder is applied to the plating layer, a plurality of grooves (concave portions) in the plating layer are generated even if the plating layer is deformed or misaligned in a direction intersecting the force application direction. The portion filled with stipulates the relative movement between the plating layer and the cylinder. Thereby, even if the finishing surface (area | region which forms an intaglio) of a plating layer is wide range, the damage accompanying the deformation | transformation and position shift of a plating layer can be prevented.

  As another aspect of the method of manufacturing a cylinder roll for gravure printing according to the present invention, a concave groove is formed on the outer peripheral surface of the cylinder by forming a spiral groove extending in the combined direction of the cylinder circumferential direction and the cylinder axial direction. Forming may also be included.

  According to this manufacturing method, the outer circumferential surface of the cylinder is formed with a spiral groove (concave portion) extending in the combined direction of the circumferential direction of the cylinder and the axial direction of the cylinder. It becomes a concavo-convex shape in the center direction. Accordingly, the plating layer is formed in a state in which grooves (concave portions) are filled at a plurality of locations in the axial direction of the cylinder. Therefore, when a radial force of the cylinder is applied to the plating layer, even if the plating layer is deformed or displaced in the direction intersecting the force application direction, the groove (concave portion) of the plating layer is filled. This portion regulates the relative movement between the plating layer and the cylinder. Thereby, even if the finishing surface (area | region which forms an intaglio) of a plating layer is wide range, the damage accompanying the deformation | transformation and position shift of a plating layer can be prevented.

  As another aspect of the method of manufacturing a cylinder roll for gravure printing according to the present invention, forming a recess on the outer peripheral surface of the cylinder forms a groove whose opening width increases from the center side of the cylinder toward the outer periphery. Including that.

  According to this manufacturing method, a groove (concave portion) whose opening width increases from the center side of the cylinder toward the outer periphery is formed on the outer peripheral surface of the cylinder, and the region where the groove (concave portion) is formed is plated. Since the plating layer is formed by applying the above, when the force in the radial direction of the cylinder acts on the plating layer, the cylinder receives the force in a dispersed state.

  Specifically, when a groove (concave portion) whose opening width increases from the center side of the cylinder toward the outer periphery is formed, the surface defining the groove (concave portion) spreads in a direction intersecting with the direction of action of the external force. It is formed in the state. Thus, when a force acts in the radial direction of the cylinder on the portion of the plating layer that fills the groove (concave), the surface that spreads in the direction intersecting the acting direction of the external force among the surfaces that define the groove (concave) Receives the force and distributes the force acting in the radial direction of the cylinder in a direction intersecting the radial direction of the cylinder. Thereby, the concentrated force does not act on the plating layer, and the plating layer is prevented from being damaged.

  As another aspect of the method for manufacturing a cylinder roll for gravure printing according to the present invention, forming a plating layer includes forming a plating layer containing an iron component on an outer peripheral surface of a cylinder containing an iron component. .

  According to the said manufacturing method, since a cylinder and a plating layer contain the same kind of iron component, the adhesiveness of the plating layer with respect to a cylinder becomes high, and the connection strength of a cylinder and a plating layer becomes high. In addition, since the plating layer contains an iron component, there are few restrictions on processing (for example, processing to a finished surface or processing of removing the intaglio after use) on the plating layer, and the workability is good.

  The method of reclaiming a cylinder roll for gravure printing according to the present invention includes scraping the intaglio formed on the outer peripheral surface of a used cylinder roll and forming at least a new intaglio on the outer peripheral surface of the cylinder roll scraped off the intaglio. Forming a recess in the entire region corresponding to the region to be applied, and performing plating treatment on at least the region where the recess is formed on the outer peripheral surface of the cylinder roll, and filling the recess and extending the plating layer to the outside of the recess Forming, and subjecting the outer peripheral surface of the plating layer to at least one of cutting and polishing to make the outer peripheral surface a finished surface.

  According to this regeneration method, since the concave portion is formed at least in the region corresponding to the region where the intaglio is formed on the outer peripheral surface of the cylinder roll, the surface area of the outer peripheral surface of the cylinder roll is a surface with less unevenness than the outer peripheral surface of the cylinder roll. Alternatively, it is significantly wider than when processed into a surface without unevenness. Therefore, when the plating layer is formed on the region where the recess is formed to form a plating layer, the cylinder roll and the plating layer are in close contact with each other on the outer peripheral surface of the cylinder roll. Compared with the case where a plating layer is formed on the substrate, the width is significantly increased.

  Thereby, the connection strength of a cylinder roll and a plating layer increases. Furthermore, since the plating layer fills the recesses, the plating layer is prevented from being damaged when performing cutting or polishing or printing to make the outer peripheral surface of the plating layer a finished surface. Is done. That is, when the radial force of the cylinder roll acts on the plating layer, even if the plating layer is deformed or displaced in the direction intersecting the direction of the force, the portion where the concave portion of the plating layer is filled Regulates the relative movement between the plating layer and the cylinder roll.

  This prevents the plating layer from being peeled off or cracked from the cylinder roll when a finished surface is formed on the plating layer or during printing.

  As one aspect of the method for regenerating a cylinder roll for gravure printing according to the present invention, an endless annular groove extending in the circumferential direction of the cylinder roll is formed in the axial direction of the cylinder roll. It may include forming a plurality in a row.

  According to such a regeneration method, since the endless annular groove (concave portion) extending in the circumferential direction of the cylinder roll is formed in a line in the axial direction of the cylinder roll, the outer peripheral surface of the cylinder roll is uneven in the axial direction of the cylinder roll. become. Accordingly, the plating layer is formed in a state where grooves (concave portions) are filled at a plurality of locations in the axial direction of the cylinder roll. Therefore, when a radial force of the cylinder roll acts on the plating layer, even if the plating layer is deformed or misaligned in a direction intersecting the direction of the force, a plurality of grooves (recesses) of the plating layer are generated. ) Fills up the relative movement between the plating layer and the cylinder roll. Thereby, even if the finishing surface (area | region which forms an intaglio) of a plating layer is wide range, the damage accompanying the deformation | transformation and position shift of a plating layer can be prevented.

  As another aspect of the method for regenerating a cylinder roll for gravure printing according to the present invention, the concave portion is formed on the outer peripheral surface of the cylinder roll, and the spiral shape extending in the combined direction of the circumferential direction of the cylinder roll and the axial direction of the cylinder roll. Forming a plurality of grooves.

  According to this regeneration method, the outer circumferential surface of the cylinder roll is formed on the outer circumferential surface of the cylinder roll so as to form a spiral groove (concave portion) extending in the combined direction of the circumferential direction of the cylinder roll and the axial direction of the cylinder roll. The cylinder roll has an uneven shape in the axial direction. Accordingly, the plating layer is formed in a state where grooves (concave portions) are filled at a plurality of locations in the axial direction of the cylinder roll. Accordingly, when the radial force of the cylinder roll acts on the plating layer, even if the plating layer is deformed or displaced in the direction intersecting the force application direction, the groove (concave portion) of the plating layer is formed. The buried portion regulates the relative movement between the plating layer and the cylinder roll. Thereby, even if the finishing surface (area | region which forms an intaglio) of a plating layer is wide range, the damage accompanying the deformation | transformation and position shift of a plating layer can be prevented.

  As another aspect of the method for reclaiming a cylinder roll for gravure printing according to the present invention, a groove having an opening width that increases from the center side of the cylinder roll toward the outer periphery is formed to form a recess on the outer peripheral surface of the cylinder roll. Forming may also be included.

  According to such a regeneration method, a groove (concave portion) whose opening width increases from the center side of the cylinder roll toward the outer periphery on the outer peripheral surface of the cylinder roll is formed, and the groove (concave portion) is formed Since the plating process is performed to form the plating layer, when a radial force of the cylinder roll acts on the plating layer, the cylinder roll receives the force in a dispersed state.

  Specifically, when a groove (concave portion) whose opening width increases from the center side to the outer periphery of the cylinder roll is formed, the surface that defines the groove (concave portion) is in a direction that intersects the direction in which the external force acts. It is formed in a spread state. As a result, when a force acts in the radial direction of the cylinder roll on the portion filling the groove (concave) of the plating layer, it spreads in a direction intersecting the acting direction of the external force in the surface defining the groove (concave). The surface receives the force and disperses the force acting in the radial direction of the cylinder roll in a direction intersecting the radial direction of the cylinder roll. Thereby, the concentrated force does not act on the plating layer, and the plating layer is prevented from being damaged.

  As another aspect of the method for regenerating a cylinder roll for gravure printing according to the present invention, forming a plating layer includes forming a plating layer containing an iron component on the outer peripheral surface of a cylinder roll containing an iron component. May be included.

  According to this regeneration method, since the cylinder roll and the plating layer contain the same kind of iron component, the adhesion of the plating layer to the cylinder roll is increased, and the connection strength between the cylinder roll and the plating layer is increased. In addition, since the plating layer contains an iron component, there are few restrictions on processing (for example, processing to a finished surface or processing of removing the intaglio after use) on the plating layer, and the workability is good.

  The present invention can produce an excellent effect that the strength of the plating layer forming the intaglio can be sufficiently secured.

FIG. 1 is a perspective view of a cylinder roll for gravure printing that is an object of a method for manufacturing and regenerating a cylinder roll for gravure printing according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view of the cylinder in the process of forming a groove in the method of manufacturing a cylinder roll for gravure printing according to the embodiment, and is a partial cross-sectional view of the cylinder as viewed from the axial direction. FIG. 3 is a partial cross-sectional view of a cylinder that has completed the step of forming a groove in the method of manufacturing a cylinder roll for gravure printing according to the embodiment, and is a partial cross-section of the cylinder as viewed from a direction orthogonal to the axial direction FIG. FIG. 4 is a partial cross-sectional view of the cylinder roll that has completed the step of forming a plating layer in the method of manufacturing a gravure cylinder roll according to the embodiment, and is a cylinder roll viewed from a direction orthogonal to the axial direction FIG. FIG. 5 is a partial cross-sectional view of the cylinder roll that has completed the step of forming the finished surface in the method of manufacturing a cylinder roll for gravure printing according to the embodiment, and is a cylinder roll viewed from a direction orthogonal to the axial direction FIG. FIG. 6 is a partial cross-sectional view of a used cylinder roll for gravure printing, as viewed from the axial direction. FIG. 7 is an explanatory view of a step of scraping the intaglio in the method for regenerating a cylinder roll for gravure printing according to the embodiment, and is a partial cross-sectional view of the cylinder roll as viewed from the axial direction. FIG. 8 is a partial cross-sectional view of the cylinder roll in the process of forming a groove in the method for regenerating a cylinder roll for gravure printing according to the embodiment, and is a partial cross-sectional view of the cylinder roll as viewed from the axial direction. . FIG. 9 is a partial cross-sectional view of the cylinder roll that has completed the step of forming the groove in the method for regenerating a cylinder roll for gravure printing according to the embodiment, and shows the cylinder roll as viewed from the direction orthogonal to the axial direction. It is a fragmentary sectional view. FIG. 10 is a partial cross-sectional view of the cylinder roll that has completed the step of forming a plating layer in the method for regenerating a cylinder roll for gravure printing according to the embodiment, and is a cylinder roll viewed from a direction orthogonal to the axial direction FIG. FIG. 11 is a partial cross-sectional view of a cylinder roll that has completed the step of forming a finished surface in the method for regenerating a cylinder roll for gravure printing according to the embodiment, and is a cylinder roll viewed from a direction orthogonal to the axial direction FIG. FIG. 12 is a partial cross-sectional view of a cylinder roll that has completed a process of forming a finished surface in a method and a method of manufacturing a cylinder roll for gravure printing according to another embodiment of the present invention, and is orthogonal to the axial direction. It is the fragmentary sectional view of the cylinder roll seen from the direction. FIG. 13 is a partial cross-sectional view of a cylinder roll that has completed the step of forming a finished surface in a manufacturing method and a recycling method of a cylinder roll for gravure printing according to another embodiment of the present invention, and is orthogonal to the axial direction. It is a fragmentary sectional view of the cylinder roll seen from the direction to do. FIG. 14 is a partial cross-sectional view of a cylinder roll that has completed the step of forming a finished surface in a method and a method of manufacturing a cylinder roll for gravure printing according to still another embodiment of the present invention. It is the fragmentary sectional view of the cylinder roll seen from the orthogonal direction. FIG. 15 is a partial cross-sectional view of a cylinder roll that has completed a step of forming a finished surface in a method and a reproducing method of a cylinder roll for gravure printing according to yet another embodiment of the present invention, It is the fragmentary sectional view of the cylinder roll seen from the orthogonal direction. FIG. 16 is a partial cross-sectional view of a cylinder roll that has completed a step of forming a finished surface in a method and a method for producing a cylinder roll for gravure printing according to still another embodiment of the present invention, It is the fragmentary sectional view of the cylinder roll seen from the orthogonal direction. FIG. 17 is a partial cross-sectional view of a cylinder roll that has completed the step of forming a finished surface in a method and a method for producing a cylinder roll for gravure printing according to still another embodiment of the present invention. It is the fragmentary sectional view of the seen cylinder roll. FIG. 18 is a partial cross-sectional view of a cylinder roll that has completed the step of forming a finished surface in a method and a reproducing method of a cylinder roll for gravure printing according to still another embodiment of the present invention. It is the fragmentary sectional view of the seen cylinder roll.

  Hereinafter, a method for manufacturing a cylinder roll for gravure printing according to an embodiment of the present invention (hereinafter simply referred to as a manufacturing method) and a method for reproducing a cylinder roll for gravure printing (hereinafter simply referred to as a recycling method) will be described with reference to the accompanying drawings. This will be described with reference to FIG.

  First, prior to the description of the manufacturing method and the regeneration method according to the present embodiment, the cylinder roll that is the subject of manufacture and regeneration will be schematically described.

  As shown in FIG. 1, the cylinder roll 1 is a so-called plate cylinder and includes a cylindrical cylinder 2 having an outer peripheral surface 20 and a plating layer 3 covering the outer peripheral surface 20 of the cylinder 2.

  The cylinder 2 is a base material for the cylinder roll 1. The cylinder 2 is formed in a cylindrical shape by a metal member (for example, general structural carbon steel) containing an iron component.

  The plating layer 3 is a metal layer containing an iron component. The outer peripheral surface 30 of the plating layer 3 is a finished surface having a required surface roughness. An intaglio 4 is formed on the outer peripheral surface (finished surface) 30 of the plating layer 3. The intaglio 4 is created by forming a large number of minute recesses 40 on the outer peripheral surface (finished surface) 30 of the plating layer 3 by laser engraving.

  The cylinder roll 1 is as described above. Then, the manufacturing method of the cylinder roll 1 of the said structure is demonstrated.

  First, the cylindrical cylinder 2 is set in a processing apparatus (for example, a lathe) (not shown), and as shown in FIG. 2, at least an area corresponding to an area where the intaglio 4 is formed on the outer peripheral surface 20 of the cylinder 2. On the other hand, a groove 21 is formed. In the present embodiment, since the entire area of the outer peripheral surface 20 of the cylinder 2 is an area for forming the intaglio 4, the recess 21 is formed in the entire outer peripheral surface 20 of the cylinder 2. In the present embodiment, a groove is formed as the recess 21 on the outer peripheral surface 20 of the cylinder 2.

  Specifically, a cutting tool (for example, a sword bite) T is pressed against the outer peripheral surface 20 of the cylinder 2 which is set on a processing device (for example, a lathe) and rotates about its own axis. An endless annular groove 21 extending in the circumferential direction is formed on the outer peripheral surface 20 of the cylinder 2.

  In the present embodiment, the entire outer peripheral surface 20 of the cylinder 2 is an area where the intaglio 4 is formed. Accordingly, each time one groove 21 is formed, the pressing position of the cutting tool (sword bite) T against the cylinder 2 is changed, so that a plurality of grooves are formed on the outer peripheral surface 20 of the cylinder 2 as shown in FIG. 21 is formed.

  In the present embodiment, a round-tip sword tool is adopted as the cutting tool T. Thereby, the groove | channel 21 is expanded toward the outer peripheral side from the center side of the cylinder 2, seeing from the extending direction of self. That is, the groove 21 is defined by a surface including an arc surface having a center line of curvature in a direction in which the groove 21 extends (a direction orthogonal to the axis of the cylinder 2).

  And the washing process with respect to the cylinder 2 in which the groove | channel 21 was formed in the outer peripheral surface 30 is performed. Specifically, the cylinder 2 is subjected to alkali degreasing, water washing, acid washing, and water washing.

  The plating process is performed on at least the outer peripheral surface 20 of the cylinder 2 thus cleaned. In the present embodiment, at least the outer peripheral surface 20 of the cylinder 2 is subjected to iron plating.

In this iron plating process, the plating solution comprises 220 g / L of ferrous chloride, 120 g / L of ferrous sulfate, 25 g / L of sodium fluoride for preventing the adverse effects of trivalent iron, A pH 3.5 mixed solution in which 5 g / L pyrogallol is mixed as a reducing agent from divalent iron to trivalent iron is used. The cylinder 2 is immersed in the plating tank storing the plating solution, the temperature of the plating solution (bath temperature) is set to 65 ° C., and the current is supplied at a current density of 3 A / dm ² . In this state, the plating layer 3 containing an iron component is formed on the outer peripheral surface 20 of the cylinder 2 by leaving it for a predetermined time. Under the above conditions, the 700 μm plating layer 3 is formed in 75 hours. In the regeneration method of the present embodiment, the plating layer 3 having a thickness of 3 cm is formed. Therefore, the cylinder 2 is left for about 3150 hours under the above conditions.

  Thereby, as shown in FIG. 4, the plating layer 3 is formed on the outer peripheral surface 20 of the cylinder 2. In the present embodiment, since the plurality of grooves 21 are formed on the outer peripheral surface 20 of the cylinder 2, the plating layer 3 is formed so as to correspond to the arrangement (form) of the plurality of grooves 21. That is, the outer peripheral surface 31 of the plating layer 3 becomes an uneven surface corresponding to the form of the groove 21 and the portion without the groove 21.

  Along with this, the irregularities on the outer peripheral surface 31 of the plating layer 3 are removed by cutting or polishing, and as shown in FIGS. 4 and 5, the outer peripheral surface 30 with no irregularities or less irregularities is formed. Then, the outer peripheral surface 30 of the plating layer 3 is finished to a predetermined finished surface. In the present embodiment, the predetermined finished surface means that the intaglio 4 is finished to a surface that does not totally reflect the laser light for laser engraving.

  Then, the intaglio 4 having a new design is formed on the finished surface 30 by laser engraving.

  In this embodiment, since the plating layer 3 is formed with a relatively thick thickness, when printing of a predetermined quantity (predetermined lot) is completed, the cylinder roll 1 is set on a lathe and the intaglio 4 of the previous design is formed. After being cut off by the cutting tool T, the cut surface is finished into a finished surface 30. Thereby, the outer peripheral surface 30 of the plating layer 3 becomes the finished surface 30 on which the intaglio 4 can be formed. In this way, the intaglio 4 is scraped off to make a new finished surface 30, but as shown in FIG. 6, when the thickness of the plating layer 3 becomes a thickness at which the new intaglio 4 cannot be formed, the plating Layer 3 is renewed.

  Specifically, the used cylinder roll 1 for which printing of a predetermined quantity (predetermined lot) has been completed is set on a processing apparatus (for example, a lathe) (not shown), and as shown in FIG. ) The intaglio 4 on the outer peripheral surface 30 is scraped off by T. Here, since the outer peripheral surface 20 of the cylinder 2 is intended for the cylinder roll 1 covered with the plating layer 3, the plating layer 3 on which a new intaglio 4 cannot be formed is scraped off. That is, the outer periphery of the cylinder roll 1 is scraped off until the base (iron) of the cylinder 2 is exposed. In the present embodiment, the outer periphery (plating layer 3) of the cylinder roll 1 is scraped until at least the outer peripheral surface 20 of the cylinder 2 (the surface 20 where the maximum opening width of the groove 21 formed at the time of manufacture) is exposed.

  And as shown in FIG. 8, the recessed part 22 is formed with respect to the whole region of the area | region corresponding to the area | region in which the intaglio 4 is formed among the outer peripheral surfaces 20 of the cylinder roll 1 (cylinder 2). In the present embodiment, since the entire area of the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2) is an area for forming the intaglio plate 4, the recess 22 is formed in the entire outer peripheral surface 20 of the cylinder roll 1 (cylinder 2). . In this embodiment, a groove is formed as a recess 21 on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2).

  Specifically, a cutting tool (for example, a sword tool) T is set against a peripheral surface 20 of a cylinder roll 1 (cylinder 2) which is set on a processing apparatus (for example, a lathe) and rotates about its own axis. Is pressed, an endless annular groove 22 extending in the circumferential direction is formed on the outer peripheral surface 20 of the cylinder 2.

  In this embodiment, since the entire outer peripheral surface 20 of the cylinder roll 1 (cylinder 2) is an area corresponding to the area where the intaglio 4 is formed, each time one groove 22 is formed, the cylinder roll 1 (cylinder 2) is formed. 9), the plurality of grooves 22 are formed on the outer peripheral surface 20 of the cylinder 2 as shown in FIG.

  In the present embodiment, a round-tip sword tool is adopted as the cutting tool T. Thereby, the groove | channel 22 is expanded toward the outer peripheral surface 30 side from the center side of the cylinder 2 seeing from the extending direction of self. That is, the groove 22 is defined by a surface including an arc surface having a center line of curvature in a direction in which the groove 22 extends (a direction orthogonal to the axis of the cylinder 2).

  In this embodiment, a new groove 22 is formed along the groove 21 formed at the time of manufacture. That is, the plating layer 3 buried in the groove 21 formed at the time of manufacture is scraped off to form a new groove 22.

  And the washing process with respect to the cylinder 2 in which the groove | channel 22 was formed in the outer peripheral surface 20 is performed. Specifically, the cylinder 2 is subjected to alkali degreasing, water washing, acid washing, and water washing.

  The plating process is performed on at least the outer peripheral surface 20 of the cylinder 2 thus cleaned. In the present embodiment, iron plating is applied to at least the outer peripheral surface 20 of the cylinder 2.

In this iron plating process, the plating solution comprises 220 g / L of ferrous chloride, 120 g / L of ferrous sulfate, 25 g / L of sodium fluoride for preventing the adverse effects of trivalent iron, A pH 3.5 mixed solution in which 5 g / L pyrogallol is mixed as a reducing agent from divalent iron to trivalent iron is used. The cylinder 2 is immersed in the plating tank storing the plating solution, the temperature of the plating solution (bath temperature) is set to 65 ° C., and the current is supplied at a current density of 3 A / dm ² . In this state, the plating layer 3 containing an iron component is formed on the outer peripheral surface 20 of the cylinder 2 by leaving it for a predetermined time. Under the above conditions, the 700 μm plating layer 3 is formed in 75 hours. In the regeneration method of the present embodiment, the plating layer 3 having a thickness of 3 cm is formed. Therefore, the cylinder 2 is left for about 3150 hours under the above conditions.

  As a result, the plating layer 3 is formed on the outer peripheral surface 20 of the cylinder 2 as shown in FIG. In the present embodiment, since the plurality of grooves 22 are formed on the outer peripheral surface 20 of the cylinder 2, the plating layer 3 is formed so as to correspond to the arrangement (form) of the plurality of grooves 22. That is, the outer peripheral surface 31 of the plating layer 3 becomes an uneven surface corresponding to the form of the groove 22 and the portion without the groove 22.

  Along with this, the irregularities on the outer peripheral surface 31 of the plating layer 3 are removed by cutting or polishing, and as shown in FIGS. 10 and 11, the outer peripheral surface 30 with no irregularities or little irregularities is formed. Then, the outer peripheral surface 30 of the plating layer 3 is finished to a predetermined finished surface. In the present embodiment, the predetermined finished surface means that the intaglio 4 is finished to a surface that does not totally reflect the laser light for laser engraving.

  Then, the intaglio 4 having a new design is formed on the finished surface 30 by laser engraving.

  As described above, the method for manufacturing the cylinder roll 1 according to the present embodiment includes forming the recesses 21 in the entire region corresponding to the region in which the intaglio 4 is formed on the outer peripheral surface 20 of the cylindrical cylinder 2. Plating at least a region of the outer peripheral surface 20 of the cylinder 2 where the concave portion 21 is formed, forming the plating layer 3 filling the concave portion 21 and extending to the outside of the concave portion 21, and the outer peripheral surface of the plating layer 3 30 is subjected to at least one of cutting and polishing, and the outer peripheral surface 30 is made a finished surface.

  According to the above manufacturing method, since the concave portion 21 is formed in the entire region corresponding to the region where the intaglio 4 is formed on the outer peripheral surface 20 of the cylinder 2, the surface area of the outer peripheral surface 20 of the cylinder 2 is the outer peripheral surface 20 of the cylinder 2. As compared with the case where the surface is processed into a surface with little unevenness or a surface without unevenness, the width is greatly increased. Therefore, when the plating layer 3 is formed by performing a plating process on the region where the concave portion 21 is formed, the outer peripheral surface 20 of the cylinder 2 is also a surface with less unevenness or the area where the cylinder 2 and the plating layer 3 are in close contact with each other. Compared with the case where the plating layer 3 is formed on the surface having no unevenness, the width is significantly increased.

  Thereby, the connection strength between the cylinder 2 and the plating layer 3 is increased. Furthermore, since the plating layer 3 fills the concave portion 21, when performing at least one of cutting and polishing to make the outer peripheral surface 30 of the plating layer 3 a finished surface 30 or when performing printing, plating is performed. Damage to the layer 3 is prevented. That is, when a radial force of the cylinder 2 is applied to the plating layer 3, even if the plating layer 3 is deformed or displaced in a direction intersecting the force application direction, the concave portion 21 of the plating layer 3. The portion in which is filled restricts the relative movement between the plating layer 3 and the cylinder 2.

  This prevents the plating layer 3 from peeling off or cracking from the cylinder 2 when the finish surface 30 is formed on the plating layer 3 or during printing.

  In the manufacturing method of the present embodiment, forming the recess 21 on the outer peripheral surface 20 of the cylinder 2 includes forming a plurality of endless annular grooves 21 extending in the circumferential direction of the cylinder 2 in the axial direction of the cylinder roll 1. Including.

  According to the manufacturing method described above, a plurality of endless annular grooves (concave portions) 21 extending in the circumferential direction of the cylinder 2 are formed side by side in the axial direction of the cylinder roll 1, so that the outer peripheral surface 20 of the cylinder 2 is in the axial direction of the cylinder 2. Becomes uneven. Accordingly, the plating layer 3 is formed in a state in which a plurality of grooves (concave portions) 21 in the axial direction of the cylinder 2 are filled. Accordingly, when a radial force of the cylinder 2 is applied to the plating layer 3, even if the plating layer 3 is deformed or displaced in a direction intersecting the force application direction, a plurality of the plating layers 3 are arranged. The portion in which the groove (concave portion) 21 is filled restricts the relative movement between the plating layer 3 and the cylinder 2. Thereby, even if the finishing surface 30 (area | region which forms the intaglio 4) of the plating layer 3 is wide range, the damage accompanying the deformation | transformation and position shift of the plating layer 3 can be prevented.

  In the manufacturing method according to this embodiment, forming the recess 21 on the outer peripheral surface 20 of the cylinder 2 includes forming the groove 21 whose opening width increases from the center side of the cylinder 2 toward the outer periphery.

  According to the above manufacturing method, the groove (recess) 21 whose opening width increases from the center side of the cylinder 2 toward the outer periphery is formed on the outer peripheral surface 20 of the cylinder 2, and the region where the groove (recess) 21 is formed. Therefore, when a radial force of the cylinder 2 acts on the plating layer 3, the cylinder 2 receives the force in a dispersed state.

  Specifically, when a groove (concave portion) 21 whose opening width increases from the center side to the outer periphery of the cylinder 2 is formed, the surface defining the groove 21 expands in a direction intersecting with the direction of the external force. It is formed in the state. Thus, when a force acts in the radial direction of the cylinder 2 on the portion of the plating layer 3 where the groove (recess) 21 is filled, the direction intersecting the acting direction of the external force on the surface defining the groove (recess) 21. The surface that spreads in the direction receives the force and disperses the force acting in the radial direction of the cylinder 2 in the direction intersecting the radial direction of the cylinder 2. Thereby, a concentrated force does not act on the plating layer 3, and damage to the plating layer 3 is prevented.

  In the manufacturing method according to the present embodiment, forming the plating layer 3 includes forming the plating layer 3 containing the iron component on the outer peripheral surface of the cylinder 2 containing the iron component.

  According to the manufacturing method, since the cylinder 2 and the plating layer 3 contain the same kind of iron component, the adhesion of the plating layer 3 to the cylinder 2 is increased, and the connection strength between the cylinder 2 and the plating layer 3 is increased. Moreover, since the plating layer 3 contains an iron component, there are few restrictions on the processing (for example, processing to the finished surface 30 or processing of scraping off the intaglio 4 after use) on the plating layer 3, and the workability is good. .

  The method for regenerating the cylinder roll 1 according to the present embodiment is to scrape the intaglio plate 4 formed on the outer peripheral surface 30 of the used cylinder roll 1 and at least new on the outer peripheral surface 20 of the cylinder roll 1 from which the intaglio plate 4 has been scraped. Forming recesses 22 in the entire region corresponding to the region where the intaglio plate 4 is formed, and plating the at least the region where the recesses 22 are formed on the outer peripheral surface 20 of the cylinder roll 1 to fill the recesses 22 Forming the plating layer 3 that protrudes to the outside of 22 and applying at least one of cutting and polishing to the outer peripheral surface 30 of the plating layer 3 to make the outer peripheral surface 30 a finished surface Including.

  According to the above regeneration method, since the concave portion 22 is formed in the entire region corresponding to the region where the intaglio 4 is formed on the outer peripheral surface 20 of the cylinder roll 1, the surface area of the outer peripheral surface 30 of the cylinder roll 1 is The outer peripheral surface 20 is significantly wider than when the outer peripheral surface 20 is processed into a surface with little or no unevenness. Therefore, when the plating layer 3 is formed by plating the region where the concave portion 22 is formed, the outer periphery of the used cylinder roll 1 is also used for the area where the used cylinder roll 1 and the plating layer 3 are in close contact with each other. Compared with the case where the plating layer 3 is formed on the surface 20 with little or no unevenness, the surface 20 becomes significantly wider.

  Thereby, the connection strength between the cylinder roll 1 and the plating layer 3 is increased. Furthermore, since the plating layer 3 fills the concave portion 22, when performing at least one of cutting and polishing to make the outer peripheral surface 30 of the plating layer 3 a finished surface, or when performing printing, the plating layer 3 damage is prevented. That is, when a radial force of the cylinder roll 1 is applied to the plating layer 3, even if the plating layer 3 is deformed or displaced in a direction intersecting the force application direction, the concave portion of the plating layer 3. The portion embedded with 22 regulates the movement of the plating layer 3.

  This prevents the plating layer 3 from peeling or cracking when the finish surface 30 is formed on the plating layer 3 or during printing.

  In the regeneration method according to the present embodiment, the recess 22 is formed on the outer peripheral surface 20 of the cylinder roll 1 by forming a plurality of endless annular grooves 22 extending in the circumferential direction of the cylinder roll 1 in the axial direction of the cylinder roll 1. Including doing.

  According to the regeneration method described above, a plurality of endless annular grooves (concave portions) 22 extending in the circumferential direction of the cylinder roll 1 are formed side by side in the axial direction of the cylinder roll 1. It has a concavo-convex shape in the axial direction. Accordingly, the plating layer 3 is formed in a state where the grooves (concave portions) 22 are filled at a plurality of locations in the axial direction of the cylinder roll 1. Therefore, when a radial force of the cylinder roll 1 is applied to the plating layer 3, even if the plating layer 3 is deformed or displaced in a direction intersecting the force application direction, a plurality of the plating layers 3 are provided. The portion in which the groove (concave portion) 22 is filled restricts the movement of the plating layer 3. Thereby, even if the finishing surface 30 (area | region which forms the intaglio 4) of the plating layer 3 is wide range, the damage accompanying the deformation | transformation and position shift of the plating layer 3 can be prevented.

  In the regeneration method according to the present embodiment, forming the recess 22 on the outer peripheral surface 20 of the cylinder roll 1 includes forming the groove 22 whose opening width increases from the center side of the cylinder roll 1 toward the outer periphery. .

  According to the above regeneration method, the groove (recess) 22 whose opening width increases from the center side of the cylinder roll 1 toward the outer periphery is formed on the outer peripheral surface 20 of the cylinder roll 1, and the groove (recess) 22 is formed. In order to form the plating layer 3 by performing the plating process on the region, when the radial force of the cylinder roll 1 acts on the plating layer 3, the cylinder roll 1 receives the force in a dispersed state. .

  Specifically, when a groove (concave portion) 22 whose opening width increases from the center side to the outer periphery of the cylinder roll 1 is formed, the surface defining the groove (concave portion) 22 intersects the direction in which the external force acts. It is formed in a state of spreading in the direction of Thereby, when a force acts in the radial direction of the cylinder roll 1 on the portion of the plating layer 3 where the groove (concave portion) 22 is filled, it intersects with the direction of the external force in the surface defining the groove (concave portion) 22. The surface spread in the direction receives the force and disperses the force acting in the radial direction of the cylinder roll 1 in a direction intersecting the radial direction of the cylinder roll 1. Thereby, a concentrated force does not act on the plating layer 3, and damage to the plating layer 3 is prevented.

  In the regeneration method according to the present embodiment, forming the plating layer 3 includes forming the plating layer 3 containing the iron component on the outer peripheral surface of the cylinder roll 1 containing the iron component.

  According to the above regeneration method, since the cylinder roll 1 and the plating layer 3 contain the same kind of iron component, the adhesion of the plating layer 3 to the cylinder roll 1 is increased, and the connection strength between the cylinder roll 1 and the plating layer 3 is high. Become. Moreover, since the plating layer 3 contains an iron component, there are few restrictions on the processing (for example, processing to the finished surface 30 or processing of scraping off the intaglio 4 after use) on the plating layer 3, and the workability is good. .

  In addition, this invention is not limited to the said embodiment, Of course, it can add suitably in the range which does not deviate from the summary of this invention.

  In the manufacturing method and the regeneration method of the above embodiment, the grooves 21 and 22 are formed in the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2), but the present invention is not limited to this. For example, a single or a plurality of depressions may be formed as the recesses 21 and 22 on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2). In this way, the surface area of the outer peripheral surface 20 of the cylinder 2 is significantly wider than when the outer peripheral surface 20 of the cylinder 2 is processed into a surface with little or no unevenness. Therefore, when the plating layer 3 is formed by performing a plating process on the region where the concave portion 21 is formed, the outer peripheral surface 20 of the cylinder 2 is also a surface with less unevenness or the area where the cylinder 2 and the plating layer 3 are in close contact with each other. Compared with the case where the plating layer 3 is formed on the surface having no unevenness, the width is significantly increased.

  Thereby, the connection strength between the cylinder 2 and the plating layer 3 is increased. Furthermore, since the plating layer 3 fills the concave portion 21, when performing at least one of cutting and polishing to make the outer peripheral surface 30 of the plating layer 3 a finished surface 30 or when performing printing, plating is performed. Damage to the layer 3 is prevented. That is, when a radial force of the cylinder 2 is applied to the plating layer 3, even if the plating layer 3 is deformed or displaced in a direction intersecting the force application direction, the concave portion 21 of the plating layer 3. The portion in which is filled restricts the relative movement between the plating layer 3 and the cylinder 2. This prevents the plating layer 3 from being peeled off or cracked from the cylinder 2 when the finish surface 30 is formed on the plating layer 3 or during printing.

  Even in this case, when a radial force is applied to the cylinder roll 1, the recesses 21 and 22 are directed from the center side of the cylinder roll 1 (cylinder 2) to the outer periphery so as to disperse the force. It is preferable that the opening width (or opening diameter) is increased.

  In the manufacturing method and the regeneration method of the above embodiment, adjacent grooves 21 and 22 are formed when a plurality of endless annular grooves 21 and 22 extending in the circumferential direction of the cylinder roll 1 (cylinder 2) are arranged in the axial direction of the cylinder roll 1. Although they are close to each other, it is not limited to this. For example, as shown in FIG. 12, when forming a plurality of endless annular grooves 21 and 22 extending in the circumferential direction of the cylinder roll 1 (cylinder 2) in the axial direction of the cylinder roll 1, adjacent grooves 21 and 22 are formed in the circumferential direction. You may arrange | position at intervals.

  In the manufacturing method and the regeneration method of the above embodiment, when forming a plurality of endless annular grooves 21 and 22 extending in the circumferential direction of the cylinder roll 1 (cylinder 2) side by side in the axial direction of the cylinder roll 1, the same and the same size grooves Although 21 and 22 were formed, it is not limited to this. For example, as shown in FIG. 13, when forming the plurality of grooves 21 and 22 on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2), grooves 21a, 21b, and 22a of different sizes are formed on the outer periphery of the cylinder roll 1 (cylinder 2). 22b may be formed.

  In the manufacturing method and the regeneration method of the above embodiment, when a plurality of endless annular grooves 21 and 22 extending in the circumferential direction of the cylinder roll 1 (cylinder 2) are formed side by side in the axial direction of the cylinder roll 1, the shape is viewed from the circumferential direction. The grooves 21 and 22 having a constant size are formed, but the present invention is not limited to this. For example, as shown in FIG. 14, in forming the grooves 21 and 22, deep portions 23 may be formed at a plurality of locations in the extending direction of the grooves 21 and 22. That is, you may form the hollow part 23 which hollowed the bottom part of the grooves 21 and 22 in the multiple places in the direction where the grooves 21 and 22 extend. In this way, the contact area between the cylinder roll 1 (cylinder 2) and the plating layer 3 is wider than when only the grooves 21 and 22 are formed, and the plating layer 3 is formed in the cylinder roll 1 (cylinder 2). Because of this, the connection between the cylinder roll 1 (cylinder 2) and the plating layer 3 is strengthened.

  In the manufacturing method and the regeneration method of the above embodiment, the semicircular arc-shaped grooves 21 and 22 are formed on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2) when viewed from the circumferential direction, but the present invention is not limited to this. For example, as shown in FIG. 15, inverted triangular grooves 21 and 22 may be formed on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2) as viewed from the circumferential direction, or as shown in FIG. 16, the cylinder roll 1 You may form the reverse trapezoidal groove | channels 21 and 22 seeing from the circumferential direction on the outer peripheral surface 20 of (cylinder 2). Even in this case, the opening width of the grooves 21 and 22 increases from the center side of the cylinder roll 1 (cylinder 2) toward the outer periphery, and the surfaces that define the grooves 21 and 22 intersect with the acting direction of the external force. Since the surface (inclined surface) is included, when a radial force of the cylinder roll 1 (cylinder 2) is applied, the force is dispersed at the interface between the cylinder roll 1 (cylinder 2) and the plating layer 3. Therefore, since the concentrated force is prevented from acting on the plating layer 3 as in the above embodiment, the plating layer 3 is prevented from being damaged.

  In the manufacturing method and the regeneration method of the above embodiment, the grooves 21 and 22 extending in the circumferential direction are formed on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2), but the present invention is not limited to this. For example, as shown in FIGS. 17 and 18, a plurality of grooves 21 and 22 extending in the axial direction of the cylinder roll 1 (cylinder 2) are arranged in the circumferential direction on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2). May be. Also in this case, the grooves 21 and 22 may be formed in a semicircular arc shape or a semi-elliptical arc when viewed from the extending direction as shown in FIG. 17, or as viewed from the extending direction as shown in FIG. It may be formed in an inverted triangle shape. Although not shown, the grooves 21 and 22 may be formed in an inverted trapezoidal shape when viewed from the direction in which the grooves 21 and 22 extend.

  In the manufacturing method and the regeneration method of the above embodiment, when the grooves 21 and 22 are formed on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2), the opening width from the center side of the cylinder roll 1 (cylinder 2) toward the outer peripheral side. However, the present invention is not limited to this. For example, in forming the grooves 21 and 22 on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2), the grooves 21 having a constant or substantially constant opening width from the center side to the outer peripheral side of the cylinder roll 1 (cylinder 2). 22 (for example, the rectangular grooves 21 and 22 as viewed from the direction in which they extend) may be formed.

  Further, when forming the grooves 21 and 22 on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2), the grooves 21 and 22 whose opening width decreases from the center side to the outer peripheral side of the cylinder roll 1 (cylinder 2) (for example, In addition, inverted T-shaped or bowl-shaped grooves 21, 22) may be formed when viewed from the direction in which they extend.

  Even if it does in this way, compared with the case where the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2) is a surface with little or no irregularities, the contact area between the cylinder roll 1 (cylinder 2) and the plating layer 3 is small. Since it becomes large, the connection intensity | strength of the cylinder roll 1 (cylinder 2) and the plating layer 3 becomes high. Accordingly, peeling or cracking of the plating layer 3 is prevented.

  In the manufacturing method and the regeneration method of the above embodiment, a plurality of endless annular grooves 21 and 22 extending in the circumferential direction of the cylinder roll 1 (cylinder 2) are formed side by side in the axial direction of the cylinder roll 1, but the present invention is not limited to this. For example, when forming the grooves 21 and 22 on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2), the spiral extending in the combined direction of the circumferential direction of the cylinder roll 1 (cylinder 2) and the axial direction of the cylinder roll 1 (cylinder 2). The grooves 21 and 22 may be formed.

  In the manufacturing method and regeneration method of the above embodiment, the grooves 21 and 22 are formed on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2) by cutting, but the present invention is not limited to this. For example, the grooves 21 and 22 may be formed on the outer peripheral surface 20 of the cylinder roll 1 (cylinder 2) by laser engraving.

  In the regeneration method of the above embodiment, the cylinder roll 1 in which the outer peripheral surface 20 of the cylinder 2 is coated with the plating layer 3 containing the iron component is regenerated. However, the regenerated cylinder roll 1 is not limited to this. The cylinder roll 1 that is the object of the regeneration method in the present invention is, for example, one in which the outer peripheral surface 20 of the cylinder 2 is covered with a plating layer 3 such as chromium or copper, or the cylinder 2 itself is the cylinder roll 1. (The cylinder roll 1 may be formed of a single material).

  When the cylinder roll 1 having the plating layer 3 such as chrome or copper is regenerated, the plating layer 3 is scraped together with the intaglio 4 and the grooves 21 and 22 are formed on the outer peripheral surface 20 of the cylinder 2. The layer 3 may be formed. The plating layer 3 in this case may be the same type as the scraped plating layer 3, but when the cylinder 2 is formed of a material containing an iron component, the plating layer 3 containing an iron component is the same as in the above embodiment. Is preferably formed.

  When the cylinder 2 itself is the cylinder roll 1, after the intaglio 4 on the outer peripheral surface 30 of the cylinder roll 1 is scraped off, grooves 21 and 22 are formed on the cut surface, and then the plating layer 3 is formed. Good. In this case, although the plating layer 3 such as chromium or copper may be used, when the cylinder 2 is formed of a material containing an iron component, it is preferable to form the plating layer 3 containing an iron component as in the above embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Cylinder roll, 2 ... Cylinder, 3 ... Plating layer, 4 ... Intaglio, 20 ... Outer peripheral surface, 21, 22 ... Groove (recessed part), 23 ... Recessed part, 30 ... Outer peripheral surface (finished surface), 31 ... Outer peripheral surface , 40 ... depression, T ... cutting tool (bite)

Claims (10)

  Forming a recess in the entire region corresponding to the region where the intaglio is formed on the outer peripheral surface of the cylindrical cylinder, and applying a plating treatment to the region where the recess is formed on the outer peripheral surface of the cylinder, filling the recess; Forming a plating layer that protrudes outward from the recess, and applying at least one of cutting and polishing to the outer peripheral surface of the plating layer, and making the outer peripheral surface a finished surface. A method for producing a cylinder roll for gravure printing, characterized in that   The cylinder roll for gravure printing according to claim 1, wherein forming the recess on the outer peripheral surface of the cylinder includes forming a plurality of endless annular grooves extending in the circumferential direction of the cylinder in the axial direction of the cylinder roll. Production method.   The cylinder roll for gravure printing according to claim 1, wherein forming the concave portion on the outer peripheral surface of the cylinder includes forming a spiral groove extending in a combined direction of the circumferential direction of the cylinder and the axial direction of the cylinder. Production method.   The gravure printing according to any one of claims 1 to 3, wherein forming the concave portion on the outer peripheral surface of the cylinder includes forming a groove whose opening width increases from the center side of the cylinder toward the outer periphery. Cylinder roll manufacturing method.   The cylinder roll for gravure printing according to any one of claims 1 to 4, wherein forming the plating layer includes forming a plating layer containing an iron component on an outer peripheral surface of a cylinder containing an iron component. Manufacturing method.   Scraping off the intaglio formed on the outer peripheral surface of the used cylinder roll, forming a recess in the entire area corresponding to the area where at least a new intaglio is formed on the outer peripheral surface of the cylinder roll from which the intaglio was scraped, and , Plating at least a region of the outer peripheral surface of the cylinder roll where the concave portion is formed, forming a plating layer filling the concave portion and extending to the outside of the concave portion, and cutting the outer peripheral surface of the plating layer And a method of regenerating a cylinder roll for gravure printing, comprising performing at least one of polishing and polishing, and forming the outer peripheral surface as a finished surface.   The cylinder for gravure printing according to claim 6, wherein forming the concave portion on the outer peripheral surface of the cylinder roll includes forming a plurality of endless annular grooves extending in the circumferential direction of the cylinder roll side by side in the axial direction of the cylinder roll. How to play a roll.   The gravure printing use according to claim 6, wherein forming the concave portion on the outer peripheral surface of the cylinder roll includes forming a spiral groove extending in a combined direction of the circumferential direction of the cylinder roll and the axial direction of the cylinder roll. Cylinder roll regeneration method.   The gravure according to any one of claims 6 to 8, wherein forming the concave portion on the outer peripheral surface of the cylinder roll includes forming a groove whose opening width increases from the center side of the cylinder roll toward the outer periphery. Recycling method of cylinder roll for printing.   The gravure printing cylinder according to any one of claims 6 to 9, wherein forming the plating layer includes forming a plating layer containing an iron component on an outer peripheral surface of a cylinder roll containing an iron component. How to play the roll.