KR101780685B1 - Method and apparatus of regeneration for reuse of gravure printing cylinder - Google Patents

Abstract

The present invention relates to a regeneration method for reusing a cylinder for a gravure printing machine and a regeneration method thereof, which can easily peel a copper plating layer on the surface of a nickel coating layer formed on the surface of an iron cylinder, A cylinder (A) for a gravure printing machine in which a nickel plating layer 20, a copper plating layer 30 and a chromium coating layer 40 are sequentially coated on the outer circumferential surface of an iron cylinder 10 in order to reduce the consumption of manpower in the process ) For recycling a cylinder (A) for a gravure printer, characterized in that a copper plating layer (30) and a chromium coating layer (40), which are printing surface layers of a cylinder (A) Step S1; A second step (S2) of charging into the hydrochloric acid in the hydrochloric acid peeler for removal of the remaining copper plating layer (30) and the chromium coating layer (40) without being peeled off in the first step; A third step (S3) of polishing the surface of the nickel plated layer (20) of the cylinder (A) from which the copper plating layer (30) and the chrome coating layer (40) are peeled off; A solution containing 20 to 35 parts by weight of conductive silver component in 100 parts by weight of film developing wastewater used for facilitating the peeling of the copper plating layer 30 on the surface of the nickel plating layer 20 of the surface polished cylinder A A fourth step (S4) of forming a silver film layer (25); A fifth step (S5) of re-plating the copper plating layer (30) on the surface of the silver coating layer (25) by injecting the cylinder (A) in which the silver coating layer (25) is formed into the copper plating layer; A sixth step (S6) of measuring the diameter of the cylinder (A) coated with the copper plating layer (30) by micrometers and polishing the surface to meet a desired standard; A seventh step (S7) of etching a printed pattern with diamond needles on the surface of the surface polished copper plating layer (30); An eighth step (S8) of re-coating the chromium coating layer (40) on the surface of the copper plating layer (30) on which the printing pattern is etched; (S9) of polishing the surface of the chromium coating layer (40) and confirming whether the reference point of the printing pattern matches the setting screen of the printing paper with a microscope (S9); and the second step The hydrochloric acid separator 110 separates the cylinder A passing through the supply unit 120 into a hydrochloric acid separator 110 and a separator 110. The separator 110 separates the cylinder A from the cylinder A, A pair of horizontal seating rods 140 in which the cylinder A passing through the tilting portion 130 is seated inside the hydrochloric separator 110 and the pair of horizontal seating rods 140, And an elevating member 150 that supports both sides of the cylinder A mounted on the cylinder 140 and sinks the cylinder A into the hydrochloric acid liquid 112 contained in the hydrochloric acid separator 110 while ascending and descending, In step S6, the cylinder A is placed in the electric polishing means 70 for polishing the surface of the copper plating layer 30 The electric polishing means 70 is provided with a cylinder A so as to be rotatable in a vertical state and a wheel type polishing brush 71 is rotated on the side of the cylinder A and connected to the polishing brush 71 And the abrasive paint brush 75 is provided on the lower side of the abrasive brush 71 on the support table 72 so that the lowering operation of the support table 72 is performed And polishing the surface of the copper plating layer 30 with an abrasive brush 71 that moves downward from the upper side of the abrasive application brush 75. [ do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for regenerating a cylinder for a gravure printing press,

The present invention relates to a regeneration method for reusing a cylinder for a gravure printer and a regeneration apparatus for the same. More particularly, the present invention relates to a regeneration method for regeneration of a copper plating layer, The present invention relates to a regeneration method for reusing a cylinder for a gravure printer and a regenerating apparatus for the same,

Recently, a gravure printing cylinder having a copper plating layer formed by a special printing method is generally used. A gravure printing cylinder in which a copper plating layer is formed is formed of a steel cylinder cast into a steel cylinder, a nickel plating layer is formed on the surface of the iron cylinder, a copper plating layer is formed on the nickel plating layer, and a chromium plating layer is formed on the copper plating layer can do. Here, the copper plating layer and the chromium plating layer are subjected to a post-treatment process for printing.

On the other hand, the gravure printing cylinder in which the printing operation is completed has been peeled off the copper plating layer by a chemical peeling method through a chemical treatment. For example, a method of forming a layer by depositing film developing wastewater on a nickel plating layer and forming a copper plating layer thereon was mainly used. After the printing process is completed, the copper plating layer is peeled off and recycled.

In the case of the chemical peeling method using such a conventional film developing wastewater, since the components and physical properties of the wastewater are not uniform, the coating operation on the nickel plating layer is not easy.

Therefore, the copper plating layer can be easily peeled off from the surface of the nickel plated layer, and the regeneration process for reusing the cylinder for the gravure printing machine including the peeling of the copper plating layer requires a considerable manpower, It is required to develop a technology of an automation system which can reduce the consumption of the automation system to a minimum.

Published Patent No. 10-2010-0103699

Accordingly, it is an object of the present invention to provide a method for removing copper plating layer on a surface of a nickel coating layer formed on a surface of an iron cylinder, which can easily peel off the copper plating layer, The present invention is directed to a regeneration method for reusing a cylinder for a gravure printing machine and a regenerating apparatus thereof.

According to the present invention, there is provided a method for reusing a cylinder (A) for a gravure printing machine in which a nickel plating layer (20), a copper plating layer (30) and a chromium coating layer (40) are successively plated on the outer circumferential surface of an iron cylinder (S1) for peeling the copper plating layer (30) and the chromium coating layer (40), which are the printing surface layers of the cylinder (A), which is received for reusing the cylinder (A) for the gravure printer, with a scraper ); A second step (S2) of charging into the hydrochloric acid in the hydrochloric acid peeler for removal of the remaining copper plating layer (30) and the chromium coating layer (40) without being peeled off in the first step; A third step (S3) of polishing the surface of the nickel plated layer (20) of the cylinder (A) from which the copper plating layer (30) and the chrome coating layer (40) are peeled off; A solution containing 20 to 35 parts by weight of conductive silver component in 100 parts by weight of film developing wastewater used for facilitating the peeling of the copper plating layer 30 on the surface of the nickel plating layer 20 of the surface polished cylinder A A fourth step (S4) of forming a silver film layer (25); A fifth step (S5) of re-plating the copper plating layer (30) on the surface of the silver coating layer (25) by injecting the cylinder (A) in which the silver coating layer (25) is formed into the copper plating layer; A sixth step (S6) of measuring the diameter of the cylinder (A) coated with the copper plating layer (30) by micrometers and polishing the surface to meet a desired standard; A seventh step (S7) of etching a printed pattern with diamond needles on the surface of the surface polished copper plating layer (30); An eighth step (S8) of re-coating the chromium coating layer (40) on the surface of the copper plating layer (30) on which the printing pattern is etched; (S9) of polishing the surface of the chromium coating layer (40) and confirming whether the reference point of the printing pattern matches the setting screen of the printing paper with a microscope (S9); and the second step The hydrochloric acid separator 110 separates the cylinder A passing through the supply unit 120 into a hydrochloric acid separator 110 and a separator 110. The separator 110 separates the cylinder A from the cylinder A, A pair of horizontal seating rods 140 in which the cylinder A passing through the tilting portion 130 is seated inside the hydrochloric separator 110 and the pair of horizontal seating rods 140, And an elevating member 150 that supports both sides of the cylinder A mounted on the cylinder 140 and sinks the cylinder A into the hydrochloric acid liquid 112 contained in the hydrochloric acid separator 110 while ascending and descending, In step S6, the cylinder A is placed in the electric polishing means 70 for polishing the surface of the copper plating layer 30 The electric polishing means 70 is provided with a cylinder A so as to be rotatable in a vertical state and a wheel type polishing brush 71 is rotated on the side of the cylinder A and connected to the polishing brush 71 And the abrasive paint brush 75 is provided on the lower side of the abrasive brush 71 on the support table 72 so that the lowering operation of the support table 72 is performed And polishing the surface of the copper plating layer 30 with an abrasive brush 71 that moves downward from the upper side of the abrasive application brush 75. [ The present invention provides a regeneration method for reusing a cylinder for a gravure printer.

The present invention also provides a regeneration apparatus for reusing a cylinder (A) for a gravure printer in which a nickel plating layer (20), a copper plating layer (30) and a chromium coating layer (40) are successively plated on the outer circumferential surface of an iron cylinder A scraper for peeling off the copper plating layer 30 and the chromium plating layer 40 which are the printing surface layer of the cylinder A that is received for reuse of the cylinder A for the gravure printer; A hydrochloric acid peeler into which the cylinder A is charged to remove the remaining copper plating layer 30 and the chromium plating layer 40 without being peeled off by the scraper; An electric grinding machine for polishing the surface of the nickel plated layer 20 of the cylinder A from which the copper plating layer 30 and the chromium plating layer 40 are peeled off; A solution containing 20 to 35 parts by weight of a conductive silver component in 100 parts by weight of film developing wastewater used for facilitating the peeling of the copper plating layer 30 on the surface of the nickel plating layer 20 of the surface polished cylinder A A silver coating coater forming a silver coating layer 25; A copper plating to form a copper plating layer 30 on the surface of the nickel plating layer 20 of the cylinder A surface-polished by the electric polishing machine; Electric polishing means for polishing the surface of the cylinder (A) on which the copper plating layer (30) is formed; A surface sharpener for forming a print pattern on the surface of the surface polished copper plated layer 30; A chrome coater for forming a chromium coating layer 40 on the surface of the copper plating layer 30 on which the printing pattern is etched; An electric polishing member for polishing the surface of the chrome coating layer 40; And a checking member for confirming whether or not the reference point of the printing pattern matches the setting screen of the printed wrapping paper by a microscope, wherein the hydrochloric acid removing unit 110 comprises a supply unit for supplying the cylinder A in a vertical state, A slope moving part 130 for moving the cylinder A passing through the feed part 120 toward the hydrochloric acid peeler 110 and a cylinder A passing through the slope moving part 130, A pair of horizontal seating rods 140 that are seated inside the vessel 110 and a pair of horizontal seating rods 140 that support the both sides of the cylinder A that is seated on the pair of horizontal seating rods 140, And an elevating member (150) for sinking the cylinder (A) into the liquid (112), the electric grinding means comprising a mounting base (81) for vertically pivotally mounting the cylinder (A) Is spaced apart from the side of the cylinder (A) vertically installed on the mounting table (81) An abrasive application brush 75 connected to the support table 72 for applying an abrasive to the surface of the copper plating layer 30 of the cylinder A and an abrasive application brush 75 for supporting the abrasive And a polishing brush (71) spaced apart from the upper portion of the application brush (75) and polishing the surface of the copper plating layer (30). The apparatus for reusing a cylinder for a gravure printer .

According to the present invention described above, the copper plating layer can be easily peeled off from the surface of the nickel coating layer formed on the surface of the steel cylinder, and the abrasive paint brush can be provided in each step of the regeneration including peeling of the copper plating layer, It is possible to automate the process of manually applying the abrasive on the outer circumferential surface and automate the process of injecting the cylinder in the hydrochloric acid peeler, thereby reducing labor consumption and increasing the working efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing an example of a process sequence of a regeneration method for reusing a cylinder for a gravure printer according to the present invention
2 is a cross-sectional view of a cylinder according to the present invention;
Figs. 3 to 5 are diagrams showing examples of the use state of the electric polishing means according to the present invention
6 is a view showing another embodiment of the electric polishing means according to the present invention
Figs. 7 to 11 are diagrams illustrating a use state of the hydrochloric acid separator according to the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a cylinder for a gravure printing machine capable of easily peeling a copper plating layer on the surface of a nickel coating layer formed on the surface of an iron cylinder and capable of minimizing the consumption of manpower in each process of regeneration including peeling of a copper plating layer Reproducing method for reuse and a reproducing apparatus therefor. First, referring to Figs. 1 to 11, the reproducing method includes a first step (S1) to a ninth step (S8) described below.

2 (a), the present invention is applied to a cylinder for a gravure printing machine in which a nickel plating layer 20, a copper plating layer 30 and a chromium coating layer 40 are sequentially coated on the outer peripheral surface of an iron cylinder 10 A) for re-use.

The copper plating layer 30 and the chromium coating layer 40 which are the printing surface layers of the cylinder A that are in stock for reuse of the cylinder A are used for the recycling of the cylinder A for the gravure printer of the present invention. And peeled off with a scraper. (Step 1 - Sl)

The copper plating layer 30 is formed on the nickel coating layer 20 so that one end of the copper plating layer 30 is cut and peeled off with a scraper so that only the copper plating layer 30 can be easily removed. When the copper plating layer 30 is thus removed, the copper plating layer 30 is collected and collected in the form of a ball. The copper plating layer 30 is compressed and stored in the form of copper, and then the copper plating layer 30 is dipped in an electrolytic bath have.

The copper plating layer 30 and the chromium coating layer 40 are peeled off with a scraper through the first step S1 so as to remove the copper plating layer 30 and the chromium coating layer 40 remaining on the surface, (Step 2-S2). ≪ tb > < TABLE >

Only the nickel plating layer 20 remains on the surface of the iron cylinder 10 through the hydrochloric acid peeler, and detailed details of the hydrochloric acid peeler will be described in detail in the reproducing apparatus for reusing the cylinder for a gravure printing machine .

Then, the surface of the nickel plated layer 20 of the cylinder A from which the copper plating layer 30 and the chrome coating layer 40 are peeled is polished (third step-S3) The peeling process of the copper plating layer 30 and the chromium plating layer 40 for reusing the cylinder A for the gravure printer is completed through the third step S3.

The copper plating layer 30 and the chromium plating layer 40 are coated again on the surface of the nickel plating layer 20 remaining on the iron cylinder 10 for reuse of the cylinder A for the printing machine .

Before the copper plating layer 30 and the chromium plating layer 40 are re-coated, the copper plating layer 30 is peeled off from the surface of the nickel plating layer 20 of the surface-polished cylinder A as shown in FIG. 2 (b) The membrane layer 25 is formed with a solution containing 20 to 35 parts by weight of a conductive silver component in 100 parts by weight of the film developing wastewater used for facilitating the operation (Step 4 - Step S4)

In the fourth step, the film developing wastewater is a drug layer used for facilitating the peeling of the copper plating layer 30 for reuse of the cylinder A in the future. By including a silver component having conductivity in the film developing wastewater, The plating efficiency (adhesion efficiency) of the copper plating layer 30 which is electrically coated on the surface of the plating layer 40 and the silver coating layer 25 can be increased. In addition, due to the nature of the silver component, the agglomeration phenomenon does not occur during coating treatment, and therefore the workability is excellent.

The thickness of the silver coating layer 25 is preferably 10 to 20 μm. When the thickness is less than 10 μm, not only the adhesion efficiency is lowered but also the amount of silver (silver) There is a disadvantage in that the efficiency is less than expected. If the thickness is more than 20 μm, the amount of unnecessary silver is wasted due to the limit of electric transfer efficiency, have.

At this time, after forming the silver coating layer 25 as another embodiment, a fine silver coating layer 29 may be further formed on the surface of the silver coating layer 25 as shown in FIG. 2 (b). The fine silver layer 29 is preferably formed to a thickness of 5 to 8 탆 and the adhesion of the copper plating layer 30 formed on the surface due to the conductivity of the fine silver layer 29 can be further enhanced.

The cylinder A on which the silver film layer 25 is formed is charged into a copper plating bath to re-coat the copper plating layer 30 on the surface of the silver coating layer 25. (Step 5 -S5)

The copper plating layer 30 is a layer for reusing the cylinder A for a printer and a printed pattern is etched. At this time, the formation of the copper plating layer 30 is performed in a conventional electrical manner.

When the copper plating layer 30 is formed, the diameter of the cylinder A coated with the copper plating layer 30 is measured in terms of micrometer, and then the surface is polished to a desired standard. (Step 6 - S6)

In this case, it is preferable that the copper plating layer 30 is formed so as to have a desired size or more for a surface polishing process in a subsequent process. For the surface polishing process, as shown in FIGS. 3 to 5, (70). The detailed construction of the electric polishing means 70 will be described in detail in a reproducing apparatus for reusing a cylinder for a gravure printing machine to be described later.

After completing the surface polishing of the copper plating layer 30, the printed pattern is etched with diamond needles on the surface of the surface polished copper plating layer 30. (Step 7-S7) At this time, And is processed by a surface visualizer.

The chromium coating layer 40 is coated again on the surface of the copper plating layer 30 on which the printing pattern is etched. (Step 8-S8)

The chromium coating layer 40 is formed to protect the copper plating layer 30 on which the printing pattern is etched. After the surface of the chromium coating layer 40 is polished, the reference point of the printing pattern and the setting screen (Step 9-S9). [0053]

A description will be given of a reproduction apparatus for reusing a cylinder for a gravure printer to realize a recycling method for reusing a cylinder for a gravure printer according to the present invention as described above.

The recycling apparatus for reusing a cylinder for a gravure printing machine according to the present invention is a recycling apparatus for reusing a cylinder for a gravure printing machine which peels off a copper plating layer 30 and a chromium plating layer 40 which are printing surface layers of a cylinder A A hydrochloric acid peeling machine into which the cylinder A is inserted for removal of the copper plating layer 30 and the chromium plating layer 40 left unremoved by the scraper and the copper plating layer 30 and the chromium plating layer 40 A motor-operated polishing machine for polishing the surface of the nickel plating layer 20 of the peeled cylinder A and a polishing pad 20 used for facilitating the peeling of the copper plating layer 30 on the surface of the nickel plating layer 20 of the surface- A silver coating film coating machine for forming a silver coating layer (25) with a solution containing 20 to 35 parts by weight of conductive silver component in 100 parts by weight of film developing wastewater; a nickel plating layer (20) of a cylinder (A) surface- ) Copper on the surface An electric polishing means for polishing a surface of the cylinder A on which the copper plating layer 30 is formed and a copper plating layer for forming a gold layer 30 on the surface of the copper plating layer 30, A chrome coater for forming a chromium coating layer 40 on the surface of the copper plating layer 30 on which the printing pattern is etched, a motor polishing abrasive member for polishing the surface of the chromium coating layer 40, And an inspection member which confirms whether the reference point of the print pattern matches the setting screen of the printed wrapping paper by a microscope.

7, the hydrochloric acid peeler 110 to be presented in the second step S2 for the implementation of the present invention includes a supply unit 120 for supplying the cylinders A in a vertical state one by one, An inclined moving part 130 for moving the cylinder A passing through the supply part 120 toward the hydrochloric acid peeling machine 110 and a cylinder A passing through the inclined moving part 130, A pair of horizontal seating rods 140 that are seated in the horizontal seating rods 110 and a pair of horizontal seating rods 140 that support the both sides of the cylinders A that are seated in the pair of horizontal seating rods 140, And an elevating member (150) for sinking the cylinder (A) into the cylinder (112).

7, the feeding unit 120 is constituted by a conveyor belt 121 which is easy to move horizontally, and a conveyor belt 121 is provided to receive and support the lower side of the cylinder A moved on the conveyor belt 121, And a seat 125 may be attached to the upper surface of the housing.

8, the seat 125 includes a bottom horizontal support portion 126 on which the bottom surface of the cylinder A for a printer is seated, and a side vertical hermetic seal portion An outwardly curved portion 128 extending outward from the upper end of the side vertical close contact portion 127 to facilitate entry of the cylinder A; And an upright wall portion 129 for allowing the adjacent seating holes 125 to be in close contact with each other.

In order to ensure stable movement of the seat 125, that is, to ensure stable movement of the cylinder A, it is preferable that the vertical wall portion 129 is formed so as to be in close contact with the adjacent seating recesses 125 can do.

At this time, it is preferable that the seat 125 is made of a soft material for protecting the surface of the cylinder A as well as being rotated on the conveyor belt 121.

The cylinder A in the hydrochloric acid peeler 110 is first moved to the hydrochloric acid peeler 110 side by the feeder 120 having the conveyor belt 121 as shown in FIG. At this time, the upper end of the cylinder A is preferably supported by the rope 170, and the rope 170 can be moved along a rail (not shown) formed on the upper portion. The rope 170 supports the upper end of the cylinder A to support the cylinder A to the inside of the hydrochloric acid peeler 110.

As shown in FIG. 7, the cylinder A moved through the supply part 120 is seated on the inclined moving part 130 while being separated from the seating part 125 when the end part of the supply part 120 is reached. At this time, the inclined moving part 130 is constituted by a conveyor belt, and the upper part of the rope 170 is stably supported by the upper part of the cylinder A when the cylinder A is inclined.

The cylinder (A) passing through the inclined moving part (130) is put into the hydrochloric acid peeler (110). 9, a pair of horizontal seating rods 140 are provided in the hydrochloric acid peeler 110, and a rope 170 is installed on the pair of horizontal seating rods 140 so that the cylinder A is seated. .

When the cylinder A is placed on the pair of horizontal seating rods 140 as shown in FIG. 10, the elevating member 150 provided on the upper side in the hydrochloric acid separator 110 descends and the both sides of the cylinder A The cylinder A is further lowered into the hydrochloric acid liquid 112 as shown in FIG.

At this time, when the cylinder A is lifted into the hydrochloric acid liquid 112 by the lifting member 150, the lifting member 150 supports the cylinder A and moves to a position higher than the horizontal seating rod 140 The horizontal lifting member 150 can be lowered into the hydrochloric acid solution 112. In another embodiment, the horizontal lifting member 140 is extended to both sides and then the lifting member 150 is lowered. .

At this time, the rope 170 may be moved to the outside of the hydrochloric acid peeler 110 as shown in FIG.

As described above, by automating the process of injecting the cylinder (A) in the hydrochloric acid peeler, work efficiency can be improved by reducing labor consumption.

The electric polishing means in the sixth step S6 includes a mounting base 81 for vertically rotating the cylinder A in a closed internal space as shown in Figs. 3 and 5, A support table 72 which is vertically moved up and down by being separated from a side of a cylinder A vertically installed on a mounting table 81 and a polishing pad 70 which is connected to the support table 72 to apply an abrasive to the surface of the copper plating layer 30 of the cylinder A And an abrasive brush 71 which is provided on the upper portion of the abrasive applicator brush 75 on the support table 72 and polishes the surface of the copper plating layer 30. [

At this time, the mounting table 81 includes a motor for rotating the cylinder A, and the support table 72 is provided with moving means parallel to the installation direction of the cylinder A, that is, The polishing brush 71 is formed in a shape of a wheel, and a brush member is formed on the outer periphery of the wheel shape.

3, a brush member 78 is provided on the inner surface of the circular tube so that the abrasive applicator brush 75 is in contact with the outer circumferential surface of the cylinder A as shown in Fig. The brush member 78 is connected to the supporter 72 and connected to the abrasive supply pipe 77 provided in the passage 76 in the horizontal base 79 to receive the abrasive from the abrasive supply pipe 77 do.

By providing the abrasive paint brush 75 as described above, the user can automate the process of manually applying the abrasive on the outer circumferential surface of the cylinder A.

6, a fine brush 73 is further provided on the upper side of the polishing brush 71 on the support table 72 so that the fine brush 73 follows the polishing brush 71, The surface of the substrate 30 can be finely polished.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be clarified. Therefore, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

10: iron cylinder 20: nickel plated layer
30: Copper plated layer 40: Chrome plated layer
70: electric polishing means 71: polishing brush
72: support 75: abrasive application brush

Claims (10)

A regeneration method for reusing a cylinder (A) for a gravure printing machine in which a nickel plating layer (20), a copper plating layer (30) and a chromium coating layer (40) are sequentially coated on an outer circumferential surface of an iron cylinder (10)
A first step (S1) of scraping off the copper plating layer (30) and the chromium coating layer (40), which are the printing surface layers of the cylinder (A) received for reuse of the cylinder (A) for the gravure printer; A second step (S2) of charging into the hydrochloric acid in the hydrochloric acid peeler for removal of the remaining copper plating layer (30) and the chromium coating layer (40) without being peeled off in the first step; A third step (S3) of polishing the surface of the nickel plated layer (20) of the cylinder (A) from which the copper plating layer (30) and the chrome coating layer (40) are peeled off; A solution containing 20 to 35 parts by weight of conductive silver component in 100 parts by weight of film developing wastewater used for facilitating the peeling of the copper plating layer 30 on the surface of the nickel plating layer 20 of the surface polished cylinder A A fourth step (S4) of forming a silver film layer (25); A fifth step (S5) of re-plating the copper plating layer (30) on the surface of the silver coating layer (25) by injecting the cylinder (A) in which the silver coating layer (25) is formed into the copper plating layer; A sixth step (S6) of measuring the diameter of the cylinder (A) coated with the copper plating layer (30) by micrometers and polishing the surface to meet a desired standard; A seventh step (S7) of etching a printed pattern with diamond needles on the surface of the surface polished copper plating layer (30); An eighth step (S8) of re-coating the chromium coating layer (40) on the surface of the copper plating layer (30) on which the printing pattern is etched; And a ninth step (S9) of polishing the surface of the chromium coating layer 40 and confirming whether the reference point of the printing pattern matches the setting screen of the printed wrapping paper with a microscope,
In the second step S2, the hydrochloric acid removing unit 110 includes a supply unit 120 for supplying the cylinders A in a vertical state one by one, and a cylinder A, which has passed through the supply unit 120, A pair of horizontal seating rods 140 in which the cylinder A passing through the tilting movement part 130 is seated inside the hydrochloric acid peeling machine 110, And an elevating member 150 which supports both sides of the cylinder A mounted on the pair of horizontal seating rods 140 and sinks the cylinder A into the hydrochloric acid liquid 112 accommodated in the hydrochloric acid separator 110 while ascending and descending And,
The cylinder A is pushed into the electric polishing means 70 for polishing the surface of the copper plating layer 30 in the sixth step S6, And the wheel-shaped polishing brush 71 is rotated on the side surface of the cylinder A so as to be moved downward from the upper side to the lower side by the support table 72 connected to the polishing brush 71, An abrasive paint brush 75 is provided on the lower side of the abrasive brush 71 on the support table 72 and the abrasive is coated on the surface of the copper plating layer 30 through the lowering operation of the support table 72, And polishing the surface by an abrasive brush (71) moving downwardly from the upper side of the application brush (75). ≪ Desc / Clms Page number 19 >
The method according to claim 1,
The abrasive applicator brush 75 is formed in the shape of a circular tube and is provided with a brush member 78 on the inner surface of the circular tube so as to contact the outer circumferential surface of the cylinder A, Is connected to an abrasive feed pipe (77) provided in a passageway (76) in the horizontal base (79) to receive the abrasive from the abrasive feed pipe (77) Way.
3. The method according to claim 1 or 2,
A fine brush 73 is further provided on the upper side of the polishing brush 71 on the support table 72 so that the fine brush 73 follows the polishing brush 71 and moves down the surface of the copper plating layer 30 finely Wherein the polishing of the cylinder for gravure printing is carried out by grinding the cylinder for gravure printing.
3. The method according to claim 1 or 2,
After forming the silver coating layer 25 on the surface of the nickel plating layer 20 in the fourth step S4, a fine silver coating layer 29 is further formed on the silver coating layer 25, 25) is formed to a thickness of 10 to 20 占 퐉 and the microelectrode film layer (29) is formed to have a thickness of 5 to 8 占 퐉 so that the adhesion of the copper plating layer (30) formed on the surface due to the conductivity of the microelectrode And the efficiency of the cylinders of the gravure printer is improved.
A regenerating apparatus for reusing a cylinder (A) for a gravure printing machine in which a nickel plating layer (20), a copper plating layer (30) and a chromium coating layer (40) are sequentially coated on the outer circumferential surface of an iron cylinder (10)
A scraper for peeling off the copper plating layer 30 and the chromium plating layer 40 which are the printing surface layers of the cylinder A which is received for reuse of the cylinder A for the gravure printer; A hydrochloric acid peeler into which the cylinder A is charged to remove the remaining copper plating layer 30 and the chromium plating layer 40 without being peeled off by the scraper; An electric grinding machine for polishing the surface of the nickel plated layer 20 of the cylinder A from which the copper plating layer 30 and the chromium plating layer 40 are peeled off; A solution containing 20 to 35 parts by weight of conductive silver component in 100 parts by weight of film developing wastewater used for facilitating the peeling of the copper plating layer 30 on the surface of the nickel plating layer 20 of the surface polished cylinder A A silver coating coater forming a silver coating layer 25; A copper plating to form a copper plating layer 30 on the surface of the nickel plating layer 20 of the cylinder A surface-polished by the electric polishing machine; Electric polishing means for polishing the surface of the cylinder (A) on which the copper plating layer (30) is formed; A surface sharpener for forming a print pattern on the surface of the surface polished copper plated layer 30; A chrome coater for forming a chromium coating layer 40 on the surface of the copper plating layer 30 on which the printing pattern is etched; An electric polishing member for polishing the surface of the chrome coating layer 40; And an inspection member which confirms whether the reference point of the print pattern matches the setting screen of the printed wrapping paper with a microscope,
The hydrochloric acid separator 110 includes a supply part 120 for supplying the cylinders A in a vertical state one by one and a slope for moving the cylinder A passing through the supply part 120 to the hydrochloric acid peeler 110 side A pair of horizontal seating rods 140 in which the cylinder A having passed through the tilting portion 130 is seated inside the hydrochloric separator 110 and the pair of horizontal seating rods 140 And an elevating member 150 supporting both sides of the mounted cylinder A and sinking the cylinder A into the hydrochloric acid liquid 112 contained in the hydrochloric acid separator 110 while ascending and descending,
The electric polishing means includes a mounting base 81 for vertically pivotally mounting the cylinder A in the hermetically closed internal space and a vertical movement mechanism for vertically moving up and down the cylinder A, An abrasive application brush 75 connected to the support table 72 for applying an abrasive to the surface of the copper plating layer 30 of the cylinder A and an abrasive application brush 75 on the support 72, And a polishing brush (71) disposed on an upper portion of the copper plating layer (30) to polish the surface of the copper plating layer (30).
6. The method of claim 5,
The supply portion 120 for supplying the cylinder A into the hydrochloric acid peeler 110 is constituted by a conveyor belt 121. The lower portion of the cylinder A is supported on the upper surface of the conveyor belt 121 by a receiving / And a seat (125) attached to the seat (125).
The method according to claim 6,
The seat 125 is made of a soft material and includes a bottom horizontal support part 126 on which the bottom surface of the cylinder A is seated and a side vertical hermetic part 127 An outwardly curved portion 128 extending outward from the upper end of the side vertical tight contact portion 127 and facilitating entry of the cylinder A and an outward curved portion 128 extending vertically from the upper end of the outward curved portion 128, And an upright wall portion (129) for making the adjacent seat (125) closely contact with each other.
6. The method of claim 5,
The abrasive applicator brush 75 is formed in the shape of a circular tube and is provided with a brush member 78 on the inner surface of the circular tube so as to contact the outer circumferential surface of the cylinder A, Is connected to an abrasive feed pipe (77) provided in a passageway (76) in the horizontal bar (79) to receive the abrasive from the abrasive feed pipe (77). Playback apparatus.
9. The method according to claim 5 or 8,
A fine brush 73 is further provided on the upper side of the polishing brush 71 on the support table 72 so that the fine brush 73 follows the polishing brush 71 and moves down the surface of the copper plating layer 30 finely And the polishing surface of the cylinder for gravure printing.
9. The method according to any one of claims 5 to 8,
A silver microporous film layer 29 is further formed on the surface of the silver coating layer 25 formed on the surface of the nickel plating layer 20 so that the silver silver layer 25 is formed to a thickness of 10 to 20 μm, 29) is formed to be 5 to 8 占 퐉.

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