JP2005111907A - Board manufacturing method of board making roll gravure printing and plating plant of board making roll for gravure printing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for plating a plating roll capable of rough finish polishing or mirror finish polishing in a short time instead of a grindstone polisher without requiring the grindstone polisher and can decrease an apparatus cost. <P>SOLUTION: Before carrying out copper sulfate plating or zinc plating to the plated roll, a middle finish polishing by a polishing wherein electrolytic abrasive polishing using liquid impregnated abrasive fixed flexible body and abrasive polishing are mixed is carried out. After plating, middle finish polishing by polishing wherein electrolytic abrasive polishing uses liquid impregnated abrasive fixed grain is carried out. Then, a treating process of mirror finish polishing wherein electrolytic polishing using super fiber and frictional polishing are mixed, is carried out. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention can perform rough finish cylindrical polishing, mirror finish polishing, and chrome plating burr removal polishing in a short time without relying on a grindstone polishing apparatus for a plate making roll for gravure printing, and can shorten the plate making time as a whole. The present invention relates to a plate making method of a plate making roll for gravure printing and a plating factory for a plate making roll for gravure printing.

Three types of plate making methods of a plate making roll for gravure printing will be described.
(1) The laser plate-making process of a straight plate-type pre-rolling roll is carried out by carrying in the roll-performing cylindrical precision machining with a lathe and then performing intermediate finish polishing with a grindstone, or removing the chromium with hydrochloric acid and correcting to a perfect circle Polishing is performed to remove a certain thickness after polishing-Degreasing-Nickel plating-Copper sulfate plating-Intermediate finish polishing / Top finish polishing / Mirror finish polishing with a grinding wheel-Photosensitive film coating formation-Image printing by laser exposure equipment -Cell development by etching-Cell formation by etching-Resist stripping by strong alkali-Chrome plating-Paper polishing-Unloading process.
(2) The laser plate-making process of the ballad plating type plate making roll is carried out by removing the used ballad copper plating, degreasing, weak surface treatment with a photographic waste liquid coating containing silver, copper sulfate plating, and grinding wheel. Medium finish polishing, top finish polishing, mirror finish polishing-photosensitive film coating formation-image printing with laser exposure equipment-alkali development-cell formation by etching-resist stripping with strong alkali-chrome plating-paper polishing-unloading process and It has become.
(3) In the direct plate type laser plate making process using ballad plating type plate making rolls, whether used ballad plating type rolls are carried in-do cylindrical finishing with a lathe, and then do intermediate finishing polishing with a grindstone? Or, remove the chrome with hydrochloric acid and perform cylindrical polishing to correct to a perfect circle, and then perform omission plate polishing to reduce a certain thickness-degreasing-nickel plating-copper sulfate plating-intermediate finish polishing, top finish polishing, mirror finish Polishing-photosensitive film coating formation-image printing with a laser exposure apparatus-alkali development-cell formation by etching-resist stripping with strong alkali-chromium plating-paper polishing-carrying out.
The plate-making process of (3) above is based on the proposal of the applicant of the present application. When the base roll is aluminum and the base plating of the ballad plating is scraped off when the plate is released, the ballad copper plating is removed and the roll is remade. Can be easily performed.
In addition, there are engraving plate making using an electronic engraving machine and a laser engraving machine.

  As can be seen from the plate making process described above, there are several processing steps by the grindstone polishing apparatus, and it takes 30 minutes or more for polishing before copper sulfate plating and polishing after copper sulfate plating. ing. In addition, it is necessary to prepare four types of grinding wheel polishing equipment: rough finishing whetstone for printing plate, medium finishing whetstone, top finishing whetstone and mirror finishing whetstone until finishing to mirror surface state, and 100mmφ × 1,000mm ～ It needs to be versatile enough to handle rolls up to 300mmφ x 2000mm, must be equipped with an auto-changer mechanism for the grindstone, and is also equipped with two-head polishing or four-head polishing that simultaneously polishes from both sides to reduce time It is polishing. For this reason, the grindstone polishing apparatus is an extremely expensive facility. Furthermore, since the grindstone polishing apparatus is a wet apparatus, it cannot be placed in the same room as a photosensitive film coating apparatus or a laser exposure apparatus that dislikes moisture, while it is transported by a stacker crane installed in a plating line. It is not configured to polish the plate-making roll as it is chucked by the chuck rotation conveyance unit.

  Therefore, the inventors of the present application have studied to eliminate the grinding wheel polishing apparatus from the plate making line, and have started research and development to install an electrolytic abrasive polishing apparatus in place of the grinding wheel polishing apparatus.

Patent application title: Tungsten Electrolytic Mirror Surface Polishing Method Patent application title: Electrolytic machining method and apparatus for hydrodynamic groove in hydrodynamic bearing Japanese Patent Application Laid-Open No. 09-192933 Patent application title: Electrolytic micro-groove processing method and apparatus Patent application title: Electrolytic abrasive polishing method for stainless steel JP-A-07-185938 High speed electrolytic rough finishing method and apparatus On the other hand, as prior art documents related to gravure plate making technology, Japanese Patent Application Nos. 10-193551, 10-193552, Japanese Patent Application No. 2000-062342, 2000-062343, JP 2000-062344, JP 2001-179923, JP 2001-179924, JP 2001-187440, JP 2001-187441, JP 2001-191475, JP 2001-191476, JP 2001- 260304, JP 2002-127369, JP 2002-187249, JP 2002-187250, JP 2002-200728, JP 2002-200729, JP 2002-307640, JP 2002-307641, and the like.

The inventors of the present application first placed a cassette-type roll chuck rotary conveyance unit substantially the same as the cassette-type roll automatic detaching apparatus shown in Japanese Patent Publication No. 57-36995 on a washing apparatus to store flush water. Electrolyte plating consisting of pure water + sodium nitrate 1wt% + abrasive grains 1wt% with a particle diameter of 0.8μmφ or less is stored in the tank. A polishing head body having a concave cylindrical surface of the same size as the polishing grindstone is prepared at the tip, connected to the cathode, and a porous elastic body having liquid impregnation properties is stacked with the concave cylindrical surface as an electrode portion. Electrolytic abrasive grains by creating a polishing system equipped with a polishing head with a superficial fiber (specifically Zyron (registered trademark = product of Toyobo Co., Ltd.)) that has creep properties, high strength, and high temperature durability on the surface. Polishing Tried.
Zylon is a fiber made of polyparaphenylene benzobisoxazole (PBO) that has a rigid and extremely linear molecular structure and is spun with a liquid crystal. Adopted because it has the highest level of strength, elastic modulus, heat resistance, and flame resistance among existing organic fibers.

Cassette-type roll chuck rotary transport unit chucks the plate-making roll at both ends, connects the plate-making roll to the anode, rotates it at the required number of revolutions, presses the plate-making roll with the polishing head, showers the electrolyte, and electrolyzes Was applied for polishing. This polishing theory is based on the fact that a passive film covering micro projections is formed on the surface of the super fiber of the polishing head, among the passive films formed on the opposing surface of the polishing head of the plate-making roll by passing an electrolytic current. The micro protrusions from which the passive film has been removed are scraped off by the abrasive grains to be captured, and are dissolved by an electrolytic current to be smoothed. However, the roll could not be polished effectively. The deposition of a passive film that plays a role in preventing the surface of the plate-making roll from being electrolyzed after a relatively short time from the start prevented effective polishing of the roll. When the electrolytic current flows, the passive film formed on the part corresponding to the polishing head on the roll surface is not removed, and it becomes an oxide film over time, and when it becomes an oxide film, it becomes a film that is difficult to remove by abrasive grains. It turns out that it accumulates.
Further, it has been found that when the abrasive grains in the electrolytic solution are captured on the surface of the super fiber of the polishing head and the plate making roll is polished with the abrasive grains, the polishing is not greatly accelerated.
It was found that when the polishing pressure is low, electrolytic abrasive polishing is carried out slightly. When the polishing pressure is increased, electrolytic abrasive polishing is increased, but this does not interfere with chuck rotation of the plate-making roll. Further, it was found that even when the polishing pressure was increased, the passive film was deposited, and the passive film could not be effectively removed by the abrasive grains contained in the electrolytic solution.

Therefore, in place of super fibers, a sponge-like elastic body in which abrasive grains corresponding to a polishing grindstone of No. 800 are fixed (specifically, Scotch Bright having a structure in which abrasive grains are bonded to a nylon nonwoven fabric (registered trademark = Sumitomo) Electrolytic abrasive polishing was performed as a polishing head on which 3M products)) were stacked.
As a result, it was found that after a lapse of time, the passive film was not removed but deposited as an oxide film in a patch pattern, and electrolytic abrasive polishing was hindered.
Therefore, when the electrolytic current flow time and the non-flow time were alternated for 20 seconds each, it was possible to avoid oxidation of the passive film, and it took about 45 minutes to achieve full polishing, but the surface roughness was reduced. When examined, it did not reach the accuracy of the mirror finish polishing. Further, the polished part became purple. This was considered an alkali burn.

  Therefore, it was found that when the electrolyte was acidified, it did not turn purple. However, it was found that when the electrolytic current was constantly applied, the passive film was oxidized and deposited.

Therefore, the following improvements were made to the polishing head so that there was simultaneously performing electrolytic abrasive polishing by flowing an electrolytic current constantly and performing abrasive polishing without flowing an electrolytic current.
An electrode portion connected to the cathode is provided on the concave cylindrical surface of the polishing head body, and a porous elastic body is formed in the groove in which two strip-shaped plate rubbers are overlapped to expose the electrode portion in the middle of the concave cylindrical surface. (Sponge) was layered and flattened, and finally a polishing head was formed by overlapping Scotch Bright as a polishing web. As a result of polishing, rough finishing polishing without any residue in about 15 minutes was achieved.

  Since this polishing head has a porous elastic body overlaid in the groove where the electrode part is exposed, it is ensured that an electrolytic current flows through the electrolytic solution. Of the passive film that is instantaneously formed on the surface portion facing the groove where the surface is exposed, the passive film that covers the micro-projections is scraped off by the abrasive grains fixed to the scotch bright and the passive film is formed. Electrolytic abrasive polishing can be performed to smooth the removed micro-protrusions by dissolving the electrolysis current, and the rubber plate overlaps so that no electrolysis current flows in the upstream and downstream portions of the porous elastic body. Then, after the surface portion opposed to the groove where the electrode portion is exposed without forming a passive film is subjected to electrolytic abrasive polishing, the Scotch Bright can perform abrasive polishing (rough finish polishing).

Subsequently, electrolytic polishing abrasive polishing was performed on a plate-making roll that had just been subjected to copper sulfate plating by superimposing superfiber xylon in place of the scotch bright to which the abrasive grains were fixed. As a result, mirror finish polishing could not be performed. Then, when electrolytic polishing was performed on the plate-making roll that had been subjected to rough finishing polishing with the Scotch Bright, mirror finishing polishing was achieved in about 15 minutes.
In addition, when a polishing roll with a scotch bright layer on which abrasive grains are fixed is used to form a cell and then electroplating is performed on a plate roll to which a hard plating is applied, the chrome plating extends to the corner of the cell. It was possible to remove burrs in a short time.

Next, for example, a polishing head, which is a block body having a concave cylindrical surface with a radius of curvature of 150 mm, is prepared, and roughing is performed on a plate-making roll for gravure printing having various diameters within a range of 80 mm to 300 mm. In order to perform finish polishing or mirror finish polishing, the contact angle of the scotch bright or xylon scotch bright with the plate making roll becomes smaller as the diameter of the plate making roll becomes smaller, and therefore good polishing cannot be performed.
Therefore, a polishing head that can press the scotch bright or xylon scotch bright against the plate making roll in a variable manner so that the contact angle of the scotch bright or xylon scotch bright with the plate making roll can be changed according to the diameter of the plate making roll. Was found necessary.
Through the above process, the present invention has been completed.

  The invention of the present application was gradually completed through the above-described experiments. In the grinding wheel polishing method, rough finishing cylindrical polishing, mirror finishing polishing, and chrome plating burr removal polishing can be performed in a short time on a plate making roll for gravure printing. An object of the present invention is to provide a non-cylindrical polishing apparatus and a plating mill for a plate roll for gravure printing.

The invention described in [Claim 1] performs electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body before applying copper sulfate plating or zinc plating to a plate-making roll. After finishing the intermediate finish polishing by the mixed polishing, after plating, perform the intermediate finish polishing by the electrolytic abrasive polishing and abrasive polishing using the liquid-impregnated abrasive fixed flexible body, Next, a method for making a plate-making roll for gravure printing, characterized in that it is configured to perform a mirror finish polishing process step in which electrolytic polishing and friction polishing using super fibers are mixed.
[Claim 2] The invention described in [Claim 2] is, after performing the process according to [Claim 1], photosensitive film coating formation-image printing with a laser exposure apparatus → alkali development → cell formation by etching → resist stripping A method for making a plate-making roll for gravure printing, characterized in that the processing step is performed.
[Claim 3] The invention according to [Claim 3] is that after performing the process according to [Claim 1], a black film coating formation for laser ablation → laser ablation by a laser ablation apparatus → cell formation by etching → a black film image It is the plate-making method of the plate-making roll for gravure printing characterized by being the structure which performs the process process of removal of this.
The invention described in [Claim 4] is based on an electronic engraving apparatus such as a Heliocrigraph (registered trademark) that engraves a cell by driving a diamond engraving needle after performing the process described in [Claim 1]. A plate-making method of a plate-making roll for gravure printing, characterized in that the processing step for forming cells is performed.
In the invention according to [Claim 5], after performing the process according to [Claim 1], a cell is formed by a powerful laser such as a YAG laser, a fiber laser, a femtosecond laser, or a UV laser having a high absorption rate. This is a method for making a plate-making roll for gravure printing, characterized in that the above-mentioned processing steps are performed.
[Claim 6] The invention described in [Claim 6], after performing the processes described in [Claim 2] to [Claim 5], hard chromium plating, quenchable nickel alloy plating, titanium carbide film, DLC film, organic A plate-making method for a plate-making roll for gravure printing, characterized in that a processing step for forming a hard coating that imparts printing durability such as a hard coating is performed.
The invention according to claim 7 is a non-woven fabric having a high frictional strength such as Scotch Bright (registered trademark) as a plating burr formed on the edge of a cell when the hard coating imparting printing durability is chrome plating. It is configured to perform a removal process by semi-finish polishing by electropolishing abrasive polishing using a liquid-impregnated abrasive-fixing flexible body formed by fixing abrasive grains and polishing that mixes abrasive polishing. [Claim 6] A method for making a plate-making roll for gravure printing according to claim 6.
The invention described in [8] has a copper sulfate plating apparatus, a chrome plating apparatus, a nickel plating apparatus, or a galvanizing apparatus for performing plating on the plate making roll as the plating line equipment, and the plate making roll. In contrast, a semi-finishing cylindrical polishing apparatus that performs intermediate finishing polishing by mixing electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body, and electrolytic polishing using super fibers A mirror polishing machine for mirror finishing that performs the process of mirror finishing polishing that mixes friction polishing and polishing, and polishes with a semi-finishing cylinder polishing machine before applying copper sulfate plating or galvanizing to the plate roll. After the plating is applied, polishing is performed with a cylindrical polishing device for intermediate finishing and then polishing with a cylindrical polishing device for mirror finishing. An industrial robot having a robot hand that can be handled by chucking the plate-making roll at both ends adjacent to one end, and the surface length direction of the plate-making roll coincides with the generatrix of the conical surface within the handling area of the industrial robot In this way, a large number of plate-making rolls can be leaned on the roll pallet diagonally in one or two stages in a circumferential arrangement, and any roll pallet can be placed on the roll pallet for stocking or taking out the plate-making roll. One or a plurality of turntable roll stock devices that can stop at a position,
The industrial robot takes out the plate making roll stocked in the roll stock device and delivers it to the roll handling means of the plating line equipment, and receives the finished plate making roll from the roll handling means of the plating line equipment and roll stock. A plating factory for a plate roll for gravure printing, characterized in that it is configured to be stocked in an apparatus.

[Effects of the Invention According to Claim 1] The present invention can be applied to a plate making line (plating line) before forming a cell.
When the electrolysis current flows, a passive film is instantaneously formed on the surface of the plate-making roll at a position facing the electrode plate. The passive film of the micro projections is scraped by Scotch Bright or the like or Zylon or the like, the instantaneous roll surface is exposed, and the exposed surface is instantaneously dissolved by the electrolytic current.
In particular, since an electrolysis current flows in the portion where the electrode part is exposed, a passive film is instantaneously formed, and the polishing film scrapes off the passive film covering the micro-projections and removes the passive film. Since the electrolytic current dissolves in the protrusions and the deposition of the passive film is avoided, the entire surface is polished with the polishing web at the portion where the electrolytic current does not flow, and depending on the type of polishing web (Scotch Bright etc. or Zylon) Therefore, intermediate finish polishing and / or mirror finish polishing can be performed in a short time, so intermediate finish → finish → mirror finish without using a grindstone polishing device for used ballad type plate making rolls. Finishing cylindrical polishing can be performed in a short time, and the entire plate-making time can be shortened.
Therefore, with respect to used straight plate-type pre-rolling rolls, intermediate finish polishing after precision plate cylinder processing with a lathe is performed by polishing that mixes electrolytic abrasive polishing and abrasive polishing using Scotch Bright etc. Intermediate finish polishing can be performed in a much shorter time than a conventional grindstone polishing apparatus.
Then, for mirror finish polishing after plating, mirror finish that mixes intermediate finish polishing by electrolytic polishing and abrasive polishing using scotch bright, and electrolytic polishing and friction polishing using xylon etc. Final polishing can be performed in a much shorter time than the processing steps of intermediate finishing → upper finishing polishing → mirror finishing polishing with a conventional grindstone polishing apparatus.
In addition, with regard to used ballad-type pre-rolling rolls, intermediate finishing polishing after precision-pressing cylinder processing with a lathe is performed by polishing with a mixture of electrolytic abrasive polishing and abrasive polishing using Scotch Bright. Final polishing can be performed in a much shorter time than a conventional grindstone polishing apparatus.
And, for mirror finish polishing after plating, mirror finish that mixes intermediate finish polishing by electrolytic polishing and abrasive polishing using scotch bright, etc., and electrolytic polishing and friction polishing using xylon etc. Final polishing can be performed in a much shorter time than the processing steps of intermediate finishing → upper finishing polishing → mirror finishing polishing with a conventional grindstone polishing apparatus.
The weighting effect of the invention of [Claim 2] It can be applied to the entire plate making line of the laser plate making method, and the electrolytic abrasive polishing apparatus can be suppressed very cheaply compared with the grindstone polishing apparatus, so the cost of the line equipment is greatly reduced. it can.
The weighting effect of the invention of [Claim 3] It can be applied to the entire plate making line of the laser ablation plate making method, and the cost of the line equipment can be reduced because the electrolytic abrasive polishing device can be suppressed very cheaply compared with the grindstone polishing device. Can be greatly reduced.
[Claim 4] The weighting effect of the invention described in [Claim 4] The present invention can be applied to the entire engraving plate making line, and the electrolytic abrasive polishing apparatus can be suppressed at a very low price compared with the grindstone polishing apparatus. Can be reduced.
The weighting effect of the invention according to [Claim 5] It can be applied to the entire plate making line of the laser engraving plate making method, and the electrolytic abrasive polishing apparatus can be suppressed very cheaply compared with the grindstone polishing apparatus. It can be greatly reduced.
The weighting effect of the invention described in [Claim 6] is intended to extend the processing steps for forming a hard coating that produces printing durability to all possibilities and to be included in the scope of rights.
The weighting effect of the invention as set forth in [Seventh aspect] The self-lubricating property of the plate surface is caused by moderately scratching the surface of the roll. Since this can be achieved by finely distributing the recesses in several μm where no transition occurs, it can be considered that burr removal and self-lubricating are caused separately. Therefore, in the past, a paper polishing apparatus was installed separately from the grindstone polishing apparatus to remove burrs on the chrome plating, and moderately scratched the roll surface to cause self-lubricity of the plate surface. By applying the invention described in [8], not only the grindstone polishing apparatus but also the paper polishing apparatus can be eliminated from the line, and the cost of the line equipment can be greatly reduced.
[Effect of the Invention of Claim 8] During the intermediate finish polishing of the plate-making roll by the polishing in which electrolytic abrasive polishing and abrasive polishing are mixed using the liquid-impregnated abrasive fixed flexible body A finishing cylindrical polishing apparatus and a mirror finishing cylindrical polishing apparatus for performing a mirror surface finishing polishing process in which electrolytic polishing and friction polishing using super fibers are mixed, and copper sulfate plating or Since it is polished with a cylindrical polishing device for intermediate finish before applying galvanizing, and after polishing with a cylindrical polishing device for intermediate finish after plating, it is polished with a cylindrical polishing device for mirror finish, In addition to the same effects as those of the invention described in [Claim 1], the following effects are obtained.
Roll stock equipment capable of stocking a large number of plate-making rolls can be handled by an industrial robot so that rolls can be carried in and out of the plating line. This greatly reduces equipment costs, reduces space, and increases the overall operating efficiency of the equipment. It can be achieved, not only fully automatic operation when there are workers in the daytime, but also the plate making roll to be processed at night is stocked before leaving unattended in the evening, and in that case, different plating processes, plating- If the plate-making process is input to the control device, the plate-making rolls are put into the plating line one by one unattended at night and one by one in turn, and a number of plate-making rolls are attached to each different plating process. Execute the process in the plating-plate making process, and stock all the rolls that have been plated or pre-made, and take out all the rolls the next morning. Door can be in capacity utilization is very high, it is possible to provide a plating factory and gravure plate-making factory of the plate-making roll for gravure printing.

The factory equipment is divided into a robot room and a plating room. The robot room is equipped with industrial robots and turntable roll stock equipment. Photosensitive film drying accelerating device, photosensitive film coating device, and laser exposure device are installed corresponding to photosensitivity / development / etching plate making, photosensitive film drying promoting device and laser ablation black film corresponding to laser ablation / etching plate making A coating device and an ablation laser exposure device are installed, a laser engraving device is installed corresponding to the laser engraving plate making, and an electronic engraving device is installed corresponding to the electronic engraving plate making. The plating room has a copper sulfate plating device, a chrome plating device, a nickel plating device, or a galvanizing device for plating the plate-making roll below the traveling line of the stacker crane installed on the ceiling. Equipped with a plating line facility, and in particular, a polishing device for intermediate finishing and a polishing device for mirror finishing are provided as polishing means.
Since the plate making methods are diverse, the line equipment is divided as shown below in the best mode for carrying out the invention.

[Laser exposure / development / etching for direct plate-type rolls]
For plate-making rolls that reuse used direct-type printing rolls,
(1) Precise cylinder precision machining with a lathe (= precision cylinder machining with a lathe that chucks both ends of a roll and rotates to cut, for example, about 25 μm to 50 μm),
→ (2) As represented by Scotch Bright, electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body in which abrasive grains are fixed to a nonwoven fabric with high friction strength were mixed. Middle finish polishing by polishing,
→ (3) Copper sulfate plating (= chuck the rolls at both ends, rotate at the required speed, immerse and rotate the lower half of the roll in copper sulfate plating, and obtain copper sulfate plating of the required thickness in about 10 to 15 minutes, for example) ,
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) As represented by XYLON, mirror surface finish polishing that combines electrolytic polishing and friction polishing using super fibers with high friction strength, heat resistance strength and creep strength,
→ (6) Photosensitive film coating formation (= chucking both ends of the roll, rotating at a required speed, scanning the photosensitive film coating head close to one end of the roll toward the other end of the roll, Apply a positive or negative positive photosensitive agent that overflows uniformly to the roll and dry to form a film)
→ (7) Image printing by laser exposure device (= chuck the roll at both ends, rotate at the required speed, scan the laser head close to one end of the roll, and scan toward the other end of the roll. Flashes to expose the photosensitive film and form a latent image)
→ (8) Alkaline development (= A resist image is obtained in about 45 to 60 seconds by immersing and rotating the lower half of the roll in an alkaline developer of PH9.5 to PH12.0)
→ (9) Formation of cells by etching (= Immerse the lower half of the roll in an acidic aqueous solution of cupric chloride or ferric chloride and rotate the exposed metal surface for about 7 to 8 minutes. Dig a cell),
→ (10) Resist stripping (= Resolving and removing the resist image in about 1 minute by immersing and rotating the lower half of the roll in a strong alkaline developer of PH12.0 to PH13.0)
-> (11) Hard chrome plating, quenchable nickel alloy plating, titanium carbide film or DLC film, hard coating formation imparting printing durability such as organic hard coating,
A series of processing steps are performed.

[Laser Ablation and Etching Plate Making for Direct Plate Type Plate Making Rolls]
For plate-making rolls that reuse used direct-type printing rolls,
(1) Precise cylinder precision machining with lathe,
→ (2) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (3) Copper sulfate plating,
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) Mirror finish polishing that combines electrolytic polishing and friction polishing using super fibers,
→ (6) Black film coating formation for laser ablation,
→ (7) Laser ablation by laser ablation equipment,
→ (8) Cell formation by etching,
→ (9) Removal of black film image,
→ (10) Hard film formation that gives printing durability such as chromium plating, titanium carbide film or DLC film, organic hard film,
A series of processing steps are performed.

[Electronic engraving for direct plate type rolls]
For plate-making rolls that reuse used direct-type printing rolls,
(1) Precise cylinder precision machining with lathe,
→ (2) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (3) Copper sulfate plating or zinc plating,
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) Mirror finish polishing that combines electrolytic polishing and friction polishing using super fibers,
-> (6) Cell formation by an electronic engraving device such as a heliocrigraph that engraves the cell by driving a diamond engraving needle,
→ (7) Chromium plating, titanium carbide film or DLC film, hard film formation that gives printing durability such as organic hard film,
A series of processing steps are performed.

[Laser engraving for direct plate-type rolls]
For plate-making rolls that reuse used direct-type printing rolls,
(1) Precise cylinder precision machining with lathe,
→ (2) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (3) Copper sulfate plating or zinc plating,
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) Mirror finish polishing that combines electrolytic polishing and friction polishing using super fibers,
→ (6) Cell formation with powerful lasers such as YAG laser, fiber laser, femtosecond laser, UV laser with good absorption rate,
→ (7) Chromium plating, titanium carbide film or DLC film, hard film formation that gives printing durability such as organic hard film,
A series of processing steps are performed.

[Laser exposure, development, and engraving for ballad plating type plate-making rolls]
For pre-made rolls that peel off used ballad plating and reuse it,
(1) Degreasing (= For example, the rolls are chucked at both ends and rotated at a required speed, the roll is alkalinized and washed with water, an acid solution is added to neutralize any remaining alkali, and this treatment is repeated twice. To recommend),
→ (2) Application of used photographic waste liquid (peelable surface treatment),
→ (3) Ballad copper sulfate plating (for example, 80 μm to 100 μm),
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) Mirror finish polishing that mixes electrolytic polishing and friction polishing using super fibers with no fixed abrasive.
→ (6) Photosensitive film coating formation,
→ (7) Image printing with a laser exposure device,
→ (8) Alkali development,
→ (9) Cell formation by etching,
→ (10) resist stripping,
→ (11) Chromium plating, titanium carbide film, DLC film, hard coating formation that gives printing durability such as organic hard coating,
A series of processing steps are performed.

[Laser ablation and engraving for ballad-plated plate-making rolls]
For pre-made rolls that peel off used ballad plating and reuse it,
(1) degreasing,
→ (2) Application of used photographic waste liquid,
→ (3) Ballad copper sulfate plating,
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) Mirror finish polishing that mixes electrolytic polishing and friction polishing using super fibers with no fixed abrasive.
→ (6) Black film coating formation for laser ablation,
→ (7) Laser ablation by laser ablation equipment,
→ (8) Cell formation by etching,
→ (9) Removal of black film image,
→ (10) Hard film formation that gives printing durability such as chromium plating, titanium carbide film or DLC film, organic hard film,
A series of processing steps are performed.

[Electronic engraving for ballad-plated plate-making rolls]
For plate-making rolls that reuse used direct-type printing rolls,
For pre-made rolls that peel off used ballad plating and reuse it,
(1) degreasing,
→ (2) Application of used photographic waste liquid,
→ (3) Ballad copper sulfate plating,
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) Mirror finish polishing that mixes electrolytic polishing and friction polishing using super fibers with no fixed abrasive.
-> (6) Cell formation by an electronic engraving device such as a heliocrigraph that engraves the cell by driving a diamond engraving needle,
→ (7) Chromium plating, titanium carbide film or DLC film, hard film formation that gives printing durability such as organic hard film,
A series of processing steps are performed.

[Laser engraving for ballad plating type rolls]
For pre-made rolls that peel off used ballad plating and reuse it,
(1) degreasing,
→ (2) Application of used photographic waste liquid,
→ (3) Ballad copper sulfate plating,
→ (4) Middle finish polishing by polishing that mixes electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body,
→ (5) Mirror finish polishing that mixes electrolytic polishing and friction polishing using super fibers with no fixed abrasive.
→ (6) Cell formation with powerful lasers such as YAG laser, fiber laser, femtosecond laser, UV laser with good absorption rate,
→ (7) Chromium plating, titanium carbide film or DLC film, hard film formation that gives printing durability such as organic hard film,
A series of processing steps are performed.

  In any of the plate making methods described in the above [0018] to [0025], when the hard coating imparting printing durability is chrome plating, the plating burr formed on the edge of the cell is scotch bright (registered trademark). ), Etc., a process step of removing by intermediate finish polishing by electropolishing abrasive polishing and abrasive polishing using a liquid-impregnated abrasive-fixing flexible body in which abrasive grains are fixed to a nonwoven fabric having high friction strength I do

FIG. 1 shows a plan view of a plate making factory that can be commonly applied to all plate making methods described in the above [0018] to [0025].
The equipment configuration shown in FIG. 1 shows a preferred line equipment that can handle all orders in one line for a plate making company that requires various processing steps according to various orders of clients.
In particular, the equipment configuration shown in FIG. 1 is not equipped with a chrome plating apparatus, but instead is a line equipment that can perform nickel alloy plating-quenching-heat radiation cooling.

This plate making factory comprises a robot room A and a plating room B.
The robot chamber A is provided with a reciprocating industrial robot 1 having a robot hand 1a that can be handled by chucking the plate making roll R at both ends, on the side close to the plating chamber B, and plating in the robot chamber A. On the side away from the chamber B, a reciprocating industrial robot 2 having a robot hand 2a capable of handling the plate-making roll R by chucking both ends thereof is provided.

  When a positive or negative photosensitive film is applied in the handling area of the industrial robot 1, a photosensitive film coating apparatus 3b on which a photosensitive film drying promoting apparatus 3a is mounted and a laser exposure apparatus 4 are installed and mirror-polished. A latent image can be formed by laser exposure by applying a photosensitive film on the roll and drying it sufficiently so that development can be performed satisfactorily. An induction hardening device 5 and a cooling device 6 are installed in the handling area of the industrial robot 2, and induction hardening is performed on nickel alloy plating instead of chromium plating, and then cooling (cooling) can be taken out.

  The two turntable roll stock apparatuses 7A and 7B are configured to be stocked in two stages in a circumferential arrangement in which the rolls are slanted diagonally, and are index-positioned. In the handling areas of both industrial robots 1 and 2 To position.

  In the plating chamber B, a relay stand device 9, an intermediate finishing polishing device 10, a mirror finishing polishing device 11, a photographic waste liquid coating device 12, and a cassette type roll chuck are provided below the traveling line of a stacker crane 8 installed on the ceiling. Cassette stock table 13, stocking device 14, developing device 15, corrosion device 16, resist stripping device 17, base nickel plating device 18, two copper sulfate plating devices 19, 19 and two chromium plates for stocking the rotary transport unit U. There are provided nickel alloy plating devices 20, 20 as a substitute for plating, a cassette mounting table device 21, and a cassette stock table 22.

  As an outline, there are provided an NC lathe 23 capable of precision cylinder processing for printing plates, a roll measuring device 24, and a proof printing machine 25.

The intermediate finishing polishing apparatus 10 performs intermediate finishing polishing by polishing in which electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive-fixing flexible body are mixed.
The mirror-finishing polishing apparatus 11 performs mirror-finishing polishing in which electrolytic polishing and friction polishing using super fibers with no abrasive grains fixed are mixed.

  The industrial robot 2, the quenching device 5, and the cooling device 6 may be installed as an outline, and the NC lathe 23 and the roll measuring device 24 may be installed as an inline. The paper polishing apparatus can be installed in the line, but the intermediate finishing polishing apparatus 10 can also be used to remove plating burrs.

  The conveying means for the plate-making roll R in the plating chamber is performed by the cooperative action of the stacker crane 4 and the cassette type roll chuck rotary conveying unit 17 having a pair of opposed chucking means.

  As shown in, for example, Japanese Patent Laid-Open No. 55-164095 / Japanese Patent Publication No. 57-36995, the cassette-type roll chuck rotary transport unit U chucks the plate-making roll R at both ends with a pair of opposed chuck means and the outside of the chuck cone. And can be rotated when mounted on each device, and can pass a plating current through the chuck cone as necessary.

  In place of the stacker crane 8 and the cassette-type roll chuck rotary conveyance unit U, a reciprocally swiveling industrial robot having a robot hand capable of handling the plate-making roll R by chucking both ends is provided, and each of the devices 10 to 20 includes It is good also as an installation which provided the pair of opposing chuck | zipper means which can rotate a plate-making roll by chucking both ends, and can send a plating current through a chuck cone as needed.

  The equipment configuration shown in FIG. 1 can implement the plate making method described in [0018] and [0022] above. In addition, the processing steps of plating treatment, intermediate finish polishing, and mirror finish polishing are also applied to the plate making method described in [0019], [0020], [0021], [0023], [0024], and [0025]. Applicable. If a laser ablation device, an electronic engraving device, a laser engraving device, or the like is provided, any of the plate making methods described in the above [0018] to [0025] can be carried out.

  This embodiment is an example of intermediate finish polishing using a liquid-impregnated abrasive-fixed flexible body and mirror finish polishing using super fibers with no abrasive grains constituting a part of the plate making method. This will be described in detail with reference to the drawings.

FIG. 2 shows a plan view of a cylindrical polishing apparatus for carrying out the cylindrical polishing method for a plate-making roll for gravure printing of the present invention, and FIG. 3 shows a longitudinal front view.
A cassette-type roll chuck rotary conveyance unit U is placed on the apparatus main body X to perform cylindrical polishing. The cassette-type roll chuck rotating / conveying unit U has substantially the same configuration as the cassette-type roll automatic detaching apparatus shown in Japanese Patent Publication No. 57-36995.

  When the cassette-type roll chuck rotating / conveying unit U is placed on the frame of the apparatus main body X, the cassette-type roll chuck rotating / conveying unit U is placed on the chain 277 of the chain winding device that is driven by the motor 26 provided in the apparatus main body X. A sprocket 29 fitted and fixed to the drive-side spindle 28 is engaged.

The cassette-type roll chuck rotating and conveying unit U is provided at both ends of the plate-making roll R by a pair of energizable roll chucks 32 and 33 provided at the ends of a pair of spindles 28 and 31 that are provided from both ends of the lifting frame 30 and face each other. And a pair of liquid-proof caps 34 and 35 fitted to the respective spindles 28 and 31 are moved to contact the end face of the plate-making roll R to energize the roll chucks 32 and 33 which are energized. It is the structure which prevents the approach of a process liquid.
The spindles 28 and 31 are in contact with sliding brushes 36 and 37 connected to the anode. Accordingly, the plate making roll R rotated by the motor 26 is connected to the anode.

As shown in FIG. 3, the apparatus main body X is configured such that a slide block 39 guided by a linear motion guide 38 is moved by a servo motor 40.
In the polishing head 41, for example, two horizontal guides 42 and 42 fixed to both ends of the back surface of the polishing head main body 41a are fitted and guided in the guide holes of the slide block 39, and the cylinder main body is fixed to the slide block 39. The tip of the piston rod of the air cylinder 43 is pivotally attached to the back surface of the polishing head main body 41a, so that the polishing head 41 comes into contact with or separates from the plate-making roll R by the expansion and contraction operation of the air cylinder 43. Yes.

Returning to FIG. 2 again, the apparatus main body X will be described.
The apparatus main body X includes a polishing tank 44, an electrolytic solution return tank 45, an electrolytic solution storage tank 46, a metal powder capturing filter 47, a shower tube 48 that showers toward the polishing portion of the polishing head 41, and a check valve type. A liquid supply means 49 for supplying the electrolyte stored in the electrolyte storage tank 46 to the shower pipe 48 is provided, which includes a pumping port, a pump, a pipe, a flow rate adjusting valve, a filter, and the like.

In the electrolytic solution storage tank 46, electrolytic solution plating consisting of pure water + sodium nitrate 1 wt% is stored. Then, the required amount of acid is added to keep the electrolyte acidic. Preferably, the pH is 3.0.
The shower tube 48 is supported by the polishing head main body 41a and reciprocates integrally.
The polishing tank 44 is an open tank that receives the showered electrolyte and returns it to the electrolyte return tank 45 through the drain pipe.
The electrolyte returning to the electrolyte return tank 45 passes through the metal powder capturing filter 47 and the metal powder is removed and returned to the electrolyte storage tank 46.
Although the polishing tank 44 is an open tank, a drain pan is provided to be freely opened and closed so that an alkaline liquid shower that neutralizes the roll surface after polishing and further a shower such as tap water does not fall into the polishing tank 44. Shall be.
Since the metal powder returning to the electrolyte return tank 45 is substantially dissolved by the acid, an ion exchange tower for capturing metal ions may be installed in the electrolyte return tank 45.

The operation will be described.
The motor 26 provided in the apparatus main body X is driven to rotate the plate making roll R at a required rotation speed. Next, the air cylinder 43 is extended to come into sliding contact with the plate-making roll R on which the polishing head 41 rotates, and cylindrical polishing is started. At the same time, the pump of the liquid supply means 49 is operated and the shower tube 48 is polished by the polishing head 41. Show the electrolyte toward the back of the area. Next, the servo motor 40 is driven, and the slide block 39 starts to reciprocate in the surface length direction of the plate making roll R from the standby position. The slide block 39 reciprocates so that both ends of the polishing head 41 protrude, for example, 50 mm outward from the edge of the plate-making roll R.
Although not shown in the figure, shower means for neutralizing and washing with water after polishing is provided. This shower means first showers the alkaline liquid to neutralize the acidic electrolyte, and then showers neutral water such as tap water. At the time of this shower, the tray is configured to avoid mixing into the electrolyzed water that comes under the plate-making roll and showers during polishing.

Details of the polishing head 41 will be described.
As shown in FIG. 4 (a), the polishing head 41 is provided with a pair of brackets 41b on both sides of the front surface of the polishing head main body 41a, and upper and lower open leg links 41c and 41c are pivotally supported by each bracket 41b. The gears 41d and 41d fixed to the bases on both sides of the open leg links 41c and 41c on each side are externally meshed, and the upper and lower open leg links 41c and 41c are swung to the maximum by the spring 41e and the stopper 41f. A horizontal bar 41g is supported at both ends between the tip of the upper leg link 41c and between the tip of the lower leg link 41c, and the two horizontal bars 41g and 41g are polished bands made of a mesh material. The pressing web 41h is fixed at both ends and stretched in a flat shape, and a belt-like electrode portion 41i is provided in the middle of the polishing belt pressing web 41h, and rubber plates 41j and 41k are provided upstream and downstream of the electrode portion 41i. It is affixed.
The polishing head 41 includes a polishing band 41m stretched in close contact with the electrode portion 41i and the rubber plates 41j and 41k.

  The polishing band 41m is a liquid-impregnated abrasive-fixing flexible body in which abrasive grains are fixed to a non-woven fabric having a high friction strength represented by Scotch Bright, or friction strength / heat resistance strength represented by Zylon. Super fiber with high creep strength.

  When the polishing band 41m is a liquid-impregnated abrasive fixed flexible body, it is formed so as to be a large ring when viewed from the side, and a feed is given so as to be the opposite of the roll rotation during polishing, Polishing at one place is not performed, and a portion existing below is washed with an electrolytic solution, and clogged metal powder and free abrasive grains are washed away. Means for traveling the polishing band 41m is not shown. Appropriate feeding means can be employed.

  When the polishing band 41m is a liquid-impregnated abrasive fixed flexible body, feed is given from the lower side to the upper side. Although not shown in detail, for example, the bobbin is chucked on the lower chuck means, and the bobbin is wound with a liquid-impregnating abrasive-fixing flexible body. The liquid is impregnated by a torque motor connected to the bobbin. The moment is applied in the rotational direction in which the flexible abrasive-fixing flexible body is wound around the bobbin, and the liquid-impregnated abrasive-fixing flexible body fed out from the bobbin is located above the upper horizontal bar 41g. It is sandwiched between a drive roll and a pinch roll and is pulled out against the urging force of the torque motor, and is wound around a bobbin for winding.

The state shown in FIG. 4A is a state in which the polishing head 41 is in the standby position and the upper and lower open leg links 41c and 41c are opened to the maximum, and the state shown in FIG. And the polishing band 41m of the polishing head 41 is brought into close contact with the plate making roll R, and the upper and lower open leg links 41c and 41c are closed and stopped near the plate making roll R to perform polishing. State.
In the state shown in FIG. 4 (c), the polishing strip 41m is brought into close contact with the plate-making roll R with respect to the plate-making roll R having a small diameter, and the upper and lower leg links 41c, 41c are closed to make the plate-making roll. It is in a state where it is stopped away from R and polishing is performed.
As shown in FIGS. 4 (b) and 4 (c), the shower tube 48 shown in FIG. 2 is provided outside the upper leg link 41c and the lower leg link 41d. Is applied to the electrode 41i on the rear surface of the polishing band pressing web 41h.

The polishing theory will be described.
Electrolyte is supplied to the contact surface between the plate-making roll R and the polishing band 41m, and the polishing head 41 is reciprocated in the roll surface length direction to reciprocate the polishing band 41m in the roll surface length direction. The portion corresponding to the portion 41i is subjected to electrolytic polishing, and the other portion where the electrolytic current does not flow is subjected to friction polishing. The polishing band 41m moves slowly in its longitudinal direction to update the polishing position of the polishing band 41m with respect to the plate-making roll R, thereby maintaining good polishing conditions.
When the polishing band 41m is a liquid-impregnated abrasive-fixing flexible body in which abrasive grains are fixed to a non-woven fabric having high frictional strength, such as Scotch Bright (registered trademark), a portion corresponding to the electrode portion 41i of the plate-making roll R Then, electrolytic abrasive polishing is performed, and the other portions (rubber-coated portions) 41j and 41k where the electrolytic current does not flow are configured to perform friction abrasive polishing, so that rough polishing or chrome plating burr removal polishing is performed. .
When the polishing band 41m is a super fiber having a high friction strength, heat resistance strength, and creep strength, such as XYLON (registered trademark), electrolytic friction polishing is performed on the portion corresponding to the electrode portion 41i of the plate making roll R, and no electrolytic current flows. The other portions (rubber-coated portions) 41j and 41k are configured to perform frictional polishing, and thus mirror finish polishing.
The polishing band pressing web 41h serves to wrap and press the polishing band 41m around the plate-making roll R.
In polishing using Scotch Bright, polishing was performed under the conditions of a circumferential speed of the plate-making roll of 200 rpm, a speed of the electrode in the roll surface length direction mm / sec, a current density of 0.025 A / cm ² , and a pressure of 150 g / cm ² . Good intermediate finish polishing.
After polishing using Scotch Bright, polishing using Zylon was performed. In polishing using Zylon, polishing was performed under the conditions of a circumferential speed of the plate-making roll of 200 rpm, a speed in the roll surface length direction of the electrode mm / sec, a current density of 0.025 A / cm ² , and a pressure of 200 g / cm ^2. Mirror finish polishing was possible.

  A cylindrical polishing apparatus capable of rough finishing cylindrical polishing by rubbing with a liquid-impregnated abrasive-fixing flexible body, such as Scotch Bright (registered trademark), which is formed by fixing abrasive grains to a non-woven fabric having high friction strength when line equipment is used It is desirable to install separately from a cylindrical polishing apparatus capable of performing mirror finish polishing by rubbing with a polishing web which is a super fiber and to which abrasive grains are not fixed.

  A cylindrical polishing apparatus capable of rough finishing cylindrical polishing with a liquid-impregnated abrasive fixed flexible body can remove and polish chromium plating burrs. Although a two-head type two-stage polishing type cylindrical polishing apparatus including a polishing head for performing rough finishing cylindrical polishing and a polishing head for performing mirror finishing polishing can be used, it is preferable to divide the two heads because of high processing capability.

  For example, the polishing head has a polishing head that is 100 mm longer than the plate-making roll having the maximum length (about 1300 mm), and the total length of the polishing head hits the polishing head at the same time even if the reciprocating stroke for polishing of the polishing head is about 100 mm. Or, it has a polishing head having the same length as the plate-making roll with the minimum length (about 500 mm), and polishing of the polishing head for the plate-making roll with the minimum length (about 500 mm) The reciprocating stroke for polishing may be set to about 100 mm, and the reciprocating stroke of the polishing head during polishing may be set to about 900 mm for the plate-making roll having the maximum length (about 1300 mm).

  The plate making roll is chucked at both ends and connected to the anode to rotate. The polishing head for rough cylindrical polishing and the polishing head for mirror finish polishing are both Scotch Bright for gravure printing plate rolls of various sizes in the range of 80 mm to 300 mm, for example. Further, it is preferable that the variable polishing head has a backup function capable of obtaining a large contact angle between the xylon and the plate-making roll.

With the variable polishing head, the Scotch Bright and the Zylon Scotch Bright can achieve uniform sliding contact over the entire length of the contact length in the roll circumferential direction with respect to the plate making roll.
When using a liquid-impregnated abrasive-fixed flexible body such as Scotch Bright, which is made by fixing abrasive grains to a nonwoven fabric, electrolytic abrasive polishing is performed at the portion corresponding to the electrode part of the plate-making roll, and no electrolytic current flows. In other portions, friction polishing is performed in parallel, and rough finishing polishing is performed. This can be applied to polishing before copper sulfate plating, polishing after copper sulfate plating, and polishing to remove chrome plating burrs.

  Also, when using a polishing web that is superfiber such as xylon and has no abrasive grains fixed, electrolytic friction polishing is performed on the part corresponding to the electrode part of the plate-making roll, and friction is generated on the other part where the electrolytic current does not flow. Polishing is performed, and thus mirror finish polishing is performed. This can be applied to polishing after rough finishing and intermediate finishing polishing after copper sulfate plating.

  The polishing strip is in close contact with the plate-making roll and is pressed against the plate-making roll by the polishing head, and includes both a configuration in which the polishing strip and the polishing head are separated and an integral configuration. Preferably, the polishing band may be configured to be moved slowly in the longitudinal direction during polishing so that the polishing position of the polishing band with respect to the plate-making roll is updated.

  When the electrolytic solution is alkaline, passive film deposition is observed in electrolytic polishing of copper sulfate plating, and the electrolytic solution is acidic in order to satisfactorily polish the entire cylinder surface. Then, an electrolytic solution is supplied to the contact surface between the plate-making roll and the polishing band during polishing, and after polishing after the polishing band is separated from the plate-making roll, an alkaline solution is quickly showered on the plate-making roll and further neutralized. It is preferably configured to shower water, and configured to prevent alkaline and neutral shower water from being mixed with the acidic electrolyte by opening and closing the tray.

The polishing head main body is not limited to the configuration shown in the first and second embodiments.
A two-head type apparatus comprising a first polishing head for rough finishing overlaid with scotch bright and a second polishing head for mirror finishing overlaid with xylon facing each other with a plate roll to be polished interposed therebetween. Thus, cylindrical polishing of a plate roll for gravure printing may be performed. Further, polishing may be performed by switching such as exchanging Scotch Bright and Zylon with a one-head type apparatus.

The present invention may be provided with means capable of chucking the plate-making roll at both ends in the polishing apparatus main body, rotating at the required number of revolutions, and connecting the plate-making roll to the anode without using the cassette-type roll chuck rotating / conveying unit. .
The present invention is not limited to the configuration in which the cassette-type roll chuck rotating / conveying unit U is mounted on the apparatus main body X to perform cylindrical polishing. The apparatus main body X may be provided with a pair of chuck rotating means for chucking the plate-making roll and connecting it to the anode for rotation, and the plate-making roll may be exchanged with an industrial robot.

  In the present invention, the mirror finish polishing before the formation of the cell after the copper sulfate plating can be performed in a shorter time than the polishing time by the grindstone polishing apparatus, and when the cell is formed and the hard plating is applied It can be applied to remove chrome plating burr generated in

  The present invention is not limited to rough finishing polishing and mirror finishing polishing of a plate-making roll to which copper plating is applied, and polishing to remove a plate-making chromium plating burr to which cells are formed and hard plating is applied. There are two types of plate making: zinc plating on the plate roll and cylindrical polishing, laser engraving and chromium plating, and nickel plating on the plate roll and cylindrical polishing to produce cells in various ways. Therefore, the method of the present invention can be applied to general cylindrical polishing of a plate-making roll.

The top view of the platemaking factory of Example 1 of this invention is shown. The longitudinal cross-sectional front view of the cylindrical grinding | polishing apparatus of Example 2 of this invention is shown. The top view of the cylindrical grinding | polishing apparatus of Example 2 of this invention is shown. The longitudinal cross-sectional side view of the grinding | polishing head of the cylindrical grinding | polishing apparatus of Example 2 of this invention is shown, (a) is a state figure before grinding | polishing with respect to the plate-making roll with the largest diameter, (b) is with respect to the plate-making roll with the largest diameter. State diagram during polishing, (c) is a state diagram before polishing for a plate roll having a minimum diameter.

Explanation of symbols

A ... Robot room, B ... Plating room, R ... Plate making roll, 1 ... Industrial robot, 1a ... Robot hand, 2 ... Industrial robot, 2a ... Robot Hand, 3a ... photosensitive film drying accelerating device, 3b ... photosensitive film coating device, 4 ... laser exposure device, 5 ... induction hardening device, 6 ... cooling device, 7A, 7B ... Roll stock device, 8 ... Stacker crane, 9 ... Relay stand device, 10 ... Middle finishing polishing device, 11 ... Mirror finish polishing device, 12 ... Photo waste liquid coating device, U ..Cassette type roll chuck rotating and conveying unit, 13... Cassette stock stand, 14... Degreasing device, 15... Developing device, 16.・ Base nickel plating equipment, 19 ... sulfuric acid Plating device, 20 ... Nickel alloy plating device, 21 ... Cassette mounting table device, 22 ... Cassette stock table, 23 ... NC lathe, 24 ... Roll measuring device, 25 ... Proof printing Printer,
X ... device main body, U ... cassette type roll chuck rotary conveyance unit, 26 ... motor, 27 ... chain, 28 ... drive side spindle, 29 ... sprocket, 30 ... Lifting frame, 31 ... Spindle on the opposite side, 32, 33 ... Roll chuck, R ... Plate making roll, 34, 35 ... Liquid-proof cap, 36, 37 ... Electric brush 37 ... Linear motion guide, 39 ... Slide block, 40 ... Servo motor, 41 ... Polishing head, 41a ... Polishing head body, 41b ... Bracket, 41c ... Open leg link , 41d ... gear, 41e ... spring, 41f ... stopper, 41g ... horizontal bar, 41h ... web for pressing the polishing band, 41i ... electrode part, 41j, 41k ... rubber Plate, 41m ... Polishing band 42 ... Horizontal guide, 43 ... Air cylinder, 44 ... Polishing tank, 45 ... Electrolyte return tank, 46 ... Electrolyte storage tank, 47 ... Metal powder trapping filter, 48 ..Shower tubes, 49 ... liquid supply means,

Claims (8)

Before applying copper sulfate plating or zinc plating to the plate making roll, perform intermediate finish polishing by polishing mixed abrasive polishing and electrolytic polishing using liquid impregnated abrasive fixed flexible body, After plating, intermediate finish polishing is performed by mixing electrolytic abrasive polishing and abrasive polishing using a liquid-impregnated abrasive fixed flexible body, and then electrolytic polishing and friction using super fibers. A plate-making method for a plate-making roll for gravure printing, characterized in that it is configured to perform a mirror-finishing polishing treatment step in which polishing is mixed. After performing the process described in [Claim 1], it is configured to perform the following processes: photosensitive film coating formation-image printing with a laser exposure apparatus → alkali development → cell formation by etching → resist stripping. To make a plate roll for gravure printing. After performing the process described in [Claim 1], it is configured to perform a process of black film coating formation for laser ablation → laser ablation with a laser ablation apparatus → cell formation by etching → black film image removal. A plate making method of a plate making roll for gravure printing characterized by the above. After performing the process of [Claim 1], it is a structure which performs the process process of the formation of the cell by electronic engraving apparatuses, such as a Heliocrigraph (trademark) which drives a diamond engraving needle and engraves a cell. A plate-making method of a plate-making roll for gravure printing, characterized in that After performing the process of [Claim 1], it is a structure which performs the process process of cell formation by powerful lasers, such as a YAG laser, a fiber laser, a femtosecond laser, and a UV laser with good absorptance. A method for making a plate-making roll for gravure printing. After carrying out the steps according to [Claim 2] to [Claim 5], hard chrome plating, hardenable nickel alloy plating, titanium carbide film, DLC film, organic hard film, or the like that provides printing durability A plate-making method for a plate-making roll for gravure printing, characterized in that the processing step for forming a film is performed. When the hard coating that provides printing durability is chrome plating, the plating burr formed on the edge of the cell is liquid-impregnated by fixing abrasive grains to a non-woven fabric with high friction strength such as Scotch Bright (registered trademark). The gravure according to claim 6, wherein the gravure is configured to perform a process step of removing by intermediate finish polishing by a combination of electrolytic abrasive polishing and abrasive polishing using an abrasive fixed flexible body. A method for making a plate roll for printing. As plating line equipment, it has a copper sulfate plating device, a chrome plating device, a nickel plating device, or a zinc plating device for plating the plate making roll and can fix liquid-impregnated abrasive grains to the plate making roll. Cylindrical polishing machine for semi-finishing that performs electro-polishing abrasive polishing using a flexible body and abrasive polishing that mixes abrasive polishing, and mirror-finishing polishing that combines electro-polishing and friction polishing using super fibers. It is equipped with a mirror finishing cylindrical polishing device that performs processing steps, and the plate roll is polished with a copper finishing or zinc finishing plate before applying copper sulfate plating or zinc plating. Polishing with a cylindrical polishing machine for polishing, followed by polishing with a cylindrical polishing machine for mirror finish, and adjacent to one end of the plating line equipment line, An industrial robot having a robot hand that can be handled by chucking both ends thereof, and a large number of plate-making rolls in the handling area of the industrial robot so that the surface length direction of the plate-making roll coincides with the generatrix of the conical surface A turntable type in which any roll pallet can be stopped at a predetermined position for stocking or taking out the plate-making roll with respect to the roll pallet. One or more roll stock equipment
The industrial robot takes out the plate making roll stocked in the roll stock device and delivers it to the roll handling means of the plating line equipment, and receives the finished plate making roll from the roll handling means of the plating line equipment and roll stock. A plating mill for a plate roll for gravure printing, which is configured to be stocked in an apparatus.

Images