TWI776027B - Collector member for cylinder plating apparatus and plating apparatus - Google Patents

Abstract

The present invention provides a collector member for a cylinder electroplating device and an electroplating device, which are used for the base end portion of the mandrel of the collet cone, so that the sliding surface can be electroplated without oil injection, abnormal discharge does not occur, low voltage, high efficiency And can prevent high temperature heating. A current collecting member for a cylinder electroplating device is attached to the base end of the collet cone of a cylinder electroplating device that holds both ends of a cylinder with a collet cone and rotates the cylinder to perform electroplating, and The base end portion is rotated, and the current collecting member includes: a cylindrical base material made of a metal body; and a plurality of lubricating regions impregnated with oil dispersed and provided on the sliding surface of the cylindrical base material Constructed of carbon or oil-impregnated carbon resin.

Description

Current collector member for cylinder electroplating device and electroplating device

The present invention relates to a collector member for a cylinder electroplating device and an electroplating device using the same, and more particularly, to a collector member for a cylinder electroplating device which is particularly suitable for use at the base end portion of a mandrel of a collet taper and using the same Electroplating device.

Conventionally, when an electroplating apparatus is used to electroplate a processed object such as a cylinder block, an electroplating apparatus for a cylinder described in Patent Document 1 is known. In addition, as a processing system for fully automatic gravure plate making including a plating apparatus for a cylinder as described in Patent Document 1, there is a processing system for fully automatic gravure plate making described in Patent Document 2.

In the electroplating apparatus for a cylinder described in Patent Document 1, when electric power is supplied to the cylinder block or power is supplied to the outside from the cylinder block side, a metal current collecting member such as iron is used for the base of the collet cone Rotary part of the end. The iron rotating current collecting member is in contact with a conductive metal fixing member such as copper, and electric power is supplied to the cylinder from an electric wire connected to the conductive metal fixing member, or power is supplied to the cylinder from the cylinder side. external.

However, in the above-described conventional metal current collecting member, in order to suppress friction on the sliding surfaces during rotation, it is necessary to supply oil (lubricating oil) to the current collecting member. Furthermore, since abnormal discharge is likely to be caused by supplying oil to the current collecting member, such a problem that abnormal discharge occurs in oil often occurs.

Furthermore, when abnormal discharge occurs on the sliding surface of the current collecting member, a film is formed on the sliding surface, as in the case of performing electrical discharge machining, and the sliding surface is in a state of projections and depressions. Furthermore, when the sliding surface is in a convex and concave state, the amount of oil supplied to the sliding surface further increases, and thus a vicious cycle in which abnormal discharge occurs further occurs.

In addition, there is a problem that the oil supplied to the sliding surface scatters and the oil drips into the plating tank of the plating apparatus, resulting in deterioration of the plating solution. In addition, oil flows between the current collecting member and other members, and the oil on the sliding surface of the current collecting member makes it difficult for current to flow, requiring a higher voltage than usual, such as 9V. Not only that, but there is also a problem of generating heat to a higher temperature than usual, such as 120°C. In addition, when a graphite current collecting member is used, there is a problem that the current is collected due to rotation, and the powder is generated due to abrasion. [Prior Art Literature] [Patent Literature]

[Patent Document 1] WO2015/151665

[Patent Document 2] WO2011/125926

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a current collector member for a cylinder electroplating apparatus and an electroplating apparatus, which are used for the base end portion of the mandrel of the collet cone so that the sliding surface can be Electroplating without oil injection, no abnormal discharge occurs, low voltage, high efficiency, and can prevent high temperature heat generation.

In order to solve the above-mentioned problems, the current collecting member for a cylinder electroplating apparatus of the present invention is the collet cone attached to the cylinder electroplating apparatus that performs electroplating by holding both ends of the cylinder block with a collet cone and rotating the cylinder block. The base end portion of the current collecting member is rotated, and the current collecting member includes: a cylindrical base material made of a metal body; Oil-impregnated carbon or resin containing oil-impregnated carbon.

Preferably, the aforementioned lubricating region is circular.

The cylinder electroplating apparatus of the present invention includes: a plating tank; a collet cone installed in the plating tank for holding and rotating the cylinder; and a current collector member attached to the base end of the collet cone and rotating ; The conductive metal fixing member is in contact with the sliding surface of the aforementioned current collecting member; to and an electric wire connected to the conductive metal fixing member, the current collecting member having: a cylindrical base material made of a metal body; and a plurality of lubricating regions provided on the cylindrical base The cylinder body plating device is composed of oil-impregnated carbon or resin containing oil-impregnated carbon on the sliding surface of the material.

Preferably, the aforementioned lubricating region is circular.

Preferably, the current collecting member is a bearing serving as a mandrel of the collet cone.

The processing system for fully automatic gravure plate making of the present invention is a fully automatic gravure plate making processing system including the above-mentioned cylinder electroplating device.

According to the present invention, it is possible to provide a collector member for a cylinder electroplating device and an electroplating device, which are used for the base end portion of the mandrel of the collet cone, so that the sliding surface can be electroplated without oil injection, abnormal discharge does not occur, and low voltage is possible. , High efficiency and can prevent high temperature heat generation, thereby achieving great results. The current collecting member for the cylinder electroplating device of the present invention does not need to be filled with oil, so there is no problem caused by oil, and the voltage only needs about 2/3 of the voltage compared with the conventional one, high efficiency, and low heat generation. It can be suppressed at around 40°C. Furthermore, the cylinder plating apparatus of the present invention can prevent the occurrence of sparks, and is excellent in wear resistance, electrical conductivity, and durability. The present invention is particularly suitable for use in an electroplating apparatus for gravure plate making.

The embodiments of the present invention will be described below based on the attached drawings, but the examples in the drawings are illustrative, and various modifications can of course be made without departing from the technical idea of the present invention.

In Fig. 1, reference numeral 10 is a cylinder plating apparatus of the present invention, and reference numeral 12 is a current collecting member for a cylinder plating apparatus of the present invention.

The collector member 12 for a cylinder electroplating apparatus of the present invention is attached to the base end of the collet cone of the cylinder electroplating apparatus 10 that performs electroplating by holding both ends of the cylinder with a collet cone and rotating the cylinder to perform electroplating. The part is rotated and includes: a cylindrical base 14 made of a metal body; and a plurality of lubricating regions 16 made of oil-impregnated carbon or oil-containing oil dispersed on the sliding surface of the cylindrical base 14 Constructed of oil-impregnated carbon resin.

The cylinder electroplating apparatus 10 of the present invention is an electroplating apparatus using the current collecting member 12 for the cylinder electroplating apparatus. The cylinder electroplating apparatus includes an electroplating tank and a collet cone, which is provided in the electroplating tank and is used to attach the cylinder to the electroplating tank. The body is held and rotated; the collector member 12 is the base end portion of the mandrel 30 attached to the aforementioned collet cone; the conductive metal fixing member 18 is the sliding surface in contact with the aforementioned collector member 12; and the electric wire 20 is Connected to the conductive metal fixing member 18, the current collecting member 12 includes: a cylindrical base material 14 made of a metal body; and a plurality of lubricating regions 16 provided by scattering The sliding surface of the cylindrical substrate 14 is composed of oil-impregnated carbon or resin containing oil-impregnated carbon.

The cylinder electroplating apparatus 10 rotates the current collecting member 12 in contact with the conductive metal fixing member 18 which is a current-carrying metal, so that a current flows through the conductive metal fixing member 18 to collect electricity. When the cylinder is on the negative electrode side, current can flow from the wire 20 connected to the conductive metal fixing member 18 to the cylinder to supply power, and when the cylinder is on the positive electrode side, the current can flow through the wire 20. Power is supplied to externally connected equipment. In this way, with the current collecting member 12 of the present invention, by using the cylinder side as a negative electrode or a positive electrode, both power supply to the cylinder side and power supply from the cylinder side to externally connected equipment can be performed.

In the present invention, the sliding surface of the cylindrical base material 14 of the current collector member 12 is dispersed and provided with a plurality of lubricating regions 16 composed of oil-impregnated carbon or resin containing oil-impregnated carbon, so that the sliding surface does not need to be oiled. Electroplating treatment, low voltage, high efficiency and can prevent high temperature heat generation.

Although FIG. 1 shows an example using brass as the metal body, the material of the cylindrical base 14 is not particularly limited as long as it is a metal, and examples thereof include iron, copper, aluminum, and alloys thereof.

The shape of the aforementioned lubricating region 16 is not particularly limited, but as shown in FIG. 1 , it is preferably circular. In addition, the plurality of lubricating regions 16 may be randomly provided on the sliding surface of the cylindrical base 14, but it is preferable that the plurality of lubricating regions 16 are formed uniformly on the sliding surface.

The method for forming the lubricating region 16 is not particularly limited. For example, a cylindrical metal body may be used as the cylindrical base material 14, and a predetermined surface of the metal body may be coated with oil-impregnated carbon or resin containing oil-impregnated carbon. The lubricating region 16 may be provided, and a metal body of a mesh body may be used as the cylindrical base 14, and oil-impregnated carbon or resin containing oil-impregnated carbon may be filled and coated on the metal body of the mesh body. Mesh and surface to provide lubricating area 16 . Further, a metal body having a plurality of holes or recesses may be used as the cylindrical base material 14, and oil-impregnated carbon or resin containing oil-impregnated carbon may be embedded in the holes or recesses of the metal body to provide the lubricating region 16.

As the oil-impregnated carbon, carbon powder mixed with oil such as lubricating oil is suitably used. As the aforementioned oil-containing impregnated carbon resin, a synthetic resin containing carbon powder into which oil such as lubricating oil is mixed is suitably used. For the aforementioned carbon powder, for example, carbon powder or graphite powder is preferable, and porous graphite powder is more preferable. The aforementioned synthetic resin is not particularly limited, and known synthetic resins can be used, for example, fluorine resins, polyamide resins, polyethylene resins, polyacetal resins, polyurethane resins, phenolic resins, epoxy resins, Polyester resin, polyketone resin, etc. The aforementioned oil-impregnated carbon and oil-impregnated carbon-containing resin may contain other additives.

In FIG. 1, although the fixing member made of copper is shown as the conductive metal fixing member 18, the material of the conductive metal fixing member 18 is not particularly limited as long as it is a conductive metal, and examples thereof include iron and copper. , aluminum and alloys of these.

Preferably, the aforementioned current collecting member 12 is a bearing serving as the aforementioned mandrel 30 of the collet cone.

The cylinder electroplating apparatus 10 of the present invention is combined with, for example, the fully automatic gravure plate-making processing system of Patent Document 2, and becomes the fully automatic gravure plate-making processing system of the present invention. Among them, it is particularly suitable to incorporate the electroplating apparatus of the present invention as disclosed in Patent Document 2, without using a stacker crane and only using a non-mobile industrial robot, and the plate-making rolls are successively transferred to the plate-making processing unit to perform the process. The type of plate-making processing within the fully automatic gravure plate-making processing system. A fully automatic processing system for gravure plate making of the type disclosed in Patent Document 2 is a kind of gravure plate making roll that can be manufactured more quickly than before, can achieve space saving, can also be unmanned at night, and can Fully automatic gravure plate-making processing system with a high degree of freedom that can be customized with flexibility and can meet various needs of customers.

In this way, if the cylinder electroplating apparatus of the present invention is used, in the plate making process of the electroplating apparatus of the automatic gravure plate making processing system, the electroplating process can be performed on the sliding surface without oil injection, and abnormal discharge will not occur. The problem caused is that compared with the past, only about 2/3 of the low voltage is required, high efficiency, and the heat generation can be suppressed to about 40°C, which can prevent high temperature heat generation. In addition, the cylinder electroplating apparatus of the present invention can prevent the occurrence of sparks, prevent the occurrence of spark marks, and is excellent in wear resistance. In addition, the current collecting member and the conductive metal fixing member can maintain good electrical conductivity even after long-term electroplating. properties and durability. [Example]

The following examples are given to further illustrate the present invention, but these examples are for illustrative purposes and should not be interpreted as limiting.

(Example 1) Except for the structure shown in FIG. 1, the cylinder electroplating apparatus basically used the same structure as the conventional cylinder electroplating apparatus. A collector member 12 is used at the base end portion of the mandrel of the collet cone. As the collector member 12, SPB-7590100 manufactured by Oiles Industry Co., Ltd. was used. A chromium plating solution with a chromic acid concentration of 250 g/L and a sulfuric acid concentration of 2.5 g/L was used as the plating solution.

A cylindrical base material of aluminum core with a circumference of 800mm and a surface length of 1250mm is used as the cylinder to be treated. The two ends of the cylinder to be treated are clamped and installed in the electroplating tank, so that the chromium plating solution overflows, and the entire cylinder to be treated is installed. submerged. The number of rotations of the cylinder to be treated was 100 rpm, the temperature of the plating solution was 55° C., the current density was 30 A/dm ² (current 3000 A), and the voltage was 6V. The electroplating treatment was carried out under these conditions for 10 minutes, and a uniform electroplating coating film having a thickness of 6 μm and no protrusions and pits on the surface was obtained. In addition, the heat generation of the current collecting member can also be suppressed to about 40°C.

<Abnormal discharge occurrence test> The 10-minute electroplating treatment was repeated 144 times under the same conditions as in Example 1 (24 hours in total). Chromium and additive components (CHRIO RX-R, manufactured by Okuno Pharmaceutical Co., Ltd.) consumed in electroplating are automatically replenished by an automatic replenishment device. The occurrence of abnormal discharge was observed, but the occurrence of abnormal discharge was not confirmed.

<Condition confirmation test> Under the same conditions as in Example 1, the current collecting member 12 was mounted in a plating tank, and chrome plating was continuously performed to measure the temperature of the conductive metal fixing member 18 during the test and the conductive metal fixing member after the test. The wear of 18 and the change in conductivity of the current collecting member 12 and the conductive metal fixing member 18 before and after the test were checked to confirm the state. The test conditions were as described below. Test time: 22 hours, the number of cylinders used: 57, the current value flowing through the cylinder: 3000A, the plating voltage: 7.0V-7.2V, the number of cylinder rotations: 340rpm. During the test, the occurrence of sparks was not confirmed, and the temperature of the conductive metal fixing member 18 was average temperature: left 43.5°C, right 49.9°C, maximum reached temperature: left 51.0°C, right 59.0°C, which can prevent high temperature heat generation. In addition, after the test, there were no spark marks and no abrasion of the conductive metal fixing member 18 . In addition, the electrical conductivity of the current collecting member 12 and the conductive metal fixing member 18 did not change before and after the test, and very good results were obtained.

(Example 2) An apparatus having the structure shown in FIG. 1 was used as a plating apparatus. A collector member 12 is used at the base end portion of the mandrel of the collet cone. As the collector member 12, SPB-7590100 manufactured by Oiles Industry Co., Ltd. was used. A copper electroplating solution containing 200 g/L of copper sulfate, 100 g/L of sulfuric acid, and 100 mg/L of chloride ions was used as the electroplating solution. A cylindrical base material of aluminum core with a circumference of 800mm and a surface length of 1250mm is used as the cylinder to be treated, and the two ends of the cylinder to be treated are clamped to be installed in the electroplating tank, so that the copper electroplating solution overflows, and the entire cylinder to be treated is installed. submerged. The number of rotations of the cylinder to be treated was 250 rpm, the temperature of the plating solution was 45° C., the current density was 30 A/dm ² (current 3000 A), and the voltage was 6 V. The electroplating treatment was carried out under these conditions for 10 minutes, and a uniform electroplating coating film having a thickness of 60 μm was obtained with no projections and pits on the surface. In addition, the heat generation of the current collecting member can also be suppressed to about 40°C.

<Abnormal discharge occurrence test> The 10-minute electroplating treatment was repeated 144 times under the same conditions as in Example 2 (24 hours in total). The copper electroplating component consumed in electroplating is automatically replenished by an automatic replenishment device. The occurrence of abnormal discharge was observed, but the occurrence of abnormal discharge was not confirmed.

(Comparative Example 1) The conventional electroplating apparatus 40 shown in FIG. 2 was used as the electroplating apparatus, and the electroplating treatment was performed in the same manner as in Example 1 for 10 minutes, except that lubricating oil was supplied to the current collecting member. In the conventional electroplating apparatus 40 , a current collecting member whose sliding surface is made of iron is used as the base end portion current collecting member 32 used for the mandrel of the collet cone. In Comparative Example 1, lubricating oil entered between the rotating iron current collecting member 32 and the conductive metal fixing member 18, and the current did not flow easily, so that a sufficient plating film could not be obtained at a voltage of 6V. A high voltage of 9V is required for a uniform plating film, and the current collecting member is heated to 120° C. due to friction and the flow of current is not easy.

<Abnormal discharge occurrence test> The 10-minute electroplating treatment was repeated 144 times under the same conditions as in Comparative Example 1 (24 hours in total). Chromium and additive components (CHRIO RX-R, manufactured by Okuno Pharmaceutical Co., Ltd.) consumed in electroplating are automatically replenished by an automatic replenishment device. The occurrence of abnormal discharge was observed, and it was confirmed that dozens of abnormal discharges occurred.

<Condition confirmation test> Under the same conditions as in Comparative Example 1, the current collecting member 32 whose sliding surface was made of iron was mounted in a plating tank, and lubricating oil was supplied to the current collecting member, and chromium plating was continuously performed, in the same state as in Example 1. Confirm the test with the same test conditions to confirm the status. During the test, since sparks occurred and the current collecting member 32 and the conductive metal fixing member 18 were not energized during the test, the test was stopped during the test. The temperature of the conductive metal fixing member 18 at the time of the test was an average temperature: about 70° C., a maximum temperature: 120° C. or higher, and high temperature heat generation was confirmed. In addition, after the test, it was confirmed that there were numerous spark marks, and the conductive metal fixing member 18 was severely worn from the spark marks as a starting point.

10‧‧‧Cylinder body electroplating device 12‧‧‧Current collector components for electroplating equipment of cylinder block 14‧‧‧Cylinder substrate 16‧‧‧Lubrication area 18‧‧‧Conductive metal fixing member 20‧‧‧Wire 30‧‧‧Spindle of collet cone 32‧‧‧Iron current collector 40‧‧‧Previous electroplating equipment

FIG. 1 is a schematic diagram showing an embodiment of a cylinder plating apparatus of the present invention.

FIG. 2 is a schematic diagram showing a conventional cylinder plating apparatus.

10‧‧‧Cylinder body electroplating device

12‧‧‧Current collector components for electroplating equipment of cylinder block

14‧‧‧Cylinder substrate

16‧‧‧Lubrication area

18‧‧‧Conductive metal fixing member

20‧‧‧Wire

30‧‧‧Spindle of collet cone

Claims (6)

A collector member for a cylinder electroplating apparatus is attached to the base end portion of the collet cone of a cylinder electroplating apparatus in which a collet cone holds both ends of a cylinder block and rotates the cylinder block to perform electroplating, and performs electroplating. Rotating, the current collecting member includes: a cylindrical base material made of a metal body; and a plurality of lubricating regions made of oil-impregnated carbon or oil-impregnated dispersed and provided on the sliding surface of the cylindrical base material Made of carbon resin. The current collecting member for a cylinder electroplating apparatus according to claim 1, wherein the lubricating region has a circular shape. An electroplating device for a cylinder body, comprising: an electroplating tank; a collet cone, which is arranged in the above-mentioned electroplating tank, for holding and rotating the cylinder body; a current collecting member, which is installed on the base end of the collet cone and rotates; a conductive metal fixing member, which is in contact with the sliding surface of the current collecting member; and an electric wire, which is connected to the conductive metal fixing member, and the current collecting member has: a cylindrical base material formed by a metal body and the plurality of lubricating regions are composed of oil-impregnated carbon or resin containing oil-impregnated carbon dispersed on the sliding surface of the cylindrical base material. The cylinder electroplating apparatus according to claim 3, wherein the lubricating region is circular. The cylinder electroplating apparatus according to claim 3, wherein the current collecting member is a bearing serving as a spindle of the collet cone. A fully automatic gravure plate-making processing system is provided with the cylinder electroplating device described in item 3, 4 or 5 of the patent application scope.

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