WO2019176586A1

WO2019176586A1 - Current collecting member for cylinder body plating apparatus and plating apparatus

Info

Publication number: WO2019176586A1
Application number: PCT/JP2019/008056
Authority: WO
Inventors: 隆永千葉; 申太郎菅原
Original assignee: 株式会社シンク・ラボラトリー
Priority date: 2018-03-16
Filing date: 2019-03-01
Publication date: 2019-09-19
Also published as: JPWO2019176586A1; JP6748332B2; KR20200110457A; KR102219903B1; CN111868309B; CN111868309A; TW201938847A; TWI776027B

Abstract

Provided is a current collecting member for a cylinder body plating apparatus, which is used at the base end of the spindle of a chuck cone, thereby making it possible to plate a sliding surface without oiling and to prevent efficiently high-temperature heat generation at low voltage without generating abnormal discharge. Provided also is a plating apparatus. The current collecting member is attached to the base end of a chuck cone of a cylinder body plating apparatus in which both ends of a cylinder body are gripped with a chuck cone and the cylinder body is rotated to perform plating, the current collecting member including a cylindrical base material and a plurality of lubricating regions made of oil-impregnated carbon or oil-impregnated carbon-containing resin provided on the sliding surface of the cylindrical base material in a scattered manner.

Description

Current collecting member and plating apparatus for cylinder body plating apparatus

The present invention relates to a current collecting member for a cylinder body plating apparatus and a plating apparatus using the same, and more particularly to a current collecting member for a cylinder body plating apparatus which is particularly preferably used for a proximal end portion of a spindle of a chuck cone and the same. The present invention relates to a plating apparatus.

2. Description of the Related Art Conventionally, a cylinder plating apparatus described in Patent Document 1 is known for plating an object to be processed such as a cylinder body with a plating apparatus. Further, as a fully automatic gravure plate processing system having a cylinder plating apparatus as described in Patent Document 1, there is a fully automatic gravure plate processing system described in Patent Document 2.

In the cylinder plating apparatus described in Patent Document 1, when supplying electricity to the cylinder body or supplying electricity from the cylinder body side to the outside, the rotating portion at the base end portion of the chuck cone has a metal such as iron. A current collector made of metal was used. Such a rotating current collecting member made of iron and a fixing member made of conductive metal such as copper are brought into contact with each other, and electricity is supplied to the cylinder body from an electric wire connected to the conductive metal fixing member, or the cylinder body side Or supplied electricity to the outside.

However, in the conventional metal current collecting member described above, it is necessary to supply oil (lubricating oil) to the current collecting member in order to suppress friction on the sliding surface during rotation. In addition, when oil is supplied to the current collecting member, abnormal discharge is likely to occur, and thus there is a problem that abnormal discharge occurs in the oil.

And, when abnormal discharge occurs on the sliding surface of the current collecting member, it becomes the same as performing electric discharge machining, and a film is formed on the sliding surface, and the sliding surface is uneven It becomes. When the sliding surface becomes uneven, the amount of oil supplied to the sliding surface further increases, thereby causing a vicious circle in which abnormal discharge occurs.

Also, there is a problem that the oil supplied to the sliding surface scatters and drops into the plating tank of the plating apparatus, resulting in deterioration of the plating solution. Furthermore, the oil flows between the current collecting member and the other member, and it becomes difficult for the current to flow due to the oil on the sliding surface of the current collecting member, and a voltage higher than usual, such as 9 V, is required. was there. There is also a problem that heat is generated at a temperature higher than usual, such as 120 ° C. Further, when a current collecting member made of graphite is used, there is a problem that powder is generated due to wear by rotating and collecting current.

WO2015 / 151665 WO2011 / 125926

The present invention has been made in view of the above-mentioned problems of the prior art. By using it at the base end of the spindle of the chuck cone, the sliding surface can be plated without lubrication, and abnormal discharge occurs. An object of the present invention is to provide a current collector for a cylinder body plating apparatus and a plating apparatus that can efficiently prevent high-temperature heat generation at a low voltage.

In order to solve the above-mentioned problems, a current collector member for a cylinder body plating apparatus according to the present invention has a chuck for a cylinder body plating apparatus that performs plating by holding both ends of a cylinder body with a chuck cone and rotating the cylinder body. A current collecting member that is attached to the base end portion of the cone and is rotated, and includes a cylindrical base material made of a metal body, and oil-impregnated carbon provided on the sliding surface of the cylindrical base material or A current collecting member for a cylinder body plating apparatus, comprising a plurality of lubricating regions made of an oil-impregnated carbon-containing resin.

It is preferable that the lubricating region is circular.

A cylinder body plating apparatus according to the present invention includes a plating tank, a chuck cone provided in the plating tank for gripping and rotating the cylinder body, and a current collecting member attached to the base end of the chuck cone and rotated. A conductive metal fixing member brought into contact with the sliding surface of the current collecting member; and an electric wire connected to the conductive metal fixing member, wherein the current collecting member is a cylinder made of a metal body. And a plurality of lubrication regions made of oil-impregnated carbon or oil-impregnated carbon-containing resin provided scattered on the sliding surface of the cylindrical substrate. .

It is preferable that the lubricating region is circular.

It is preferable that the current collecting member is a bearing of a spindle of the chuck cone.

The fully automatic gravure plate processing system of the present invention is a fully automatic gravure plate processing system provided with the cylinder body plating apparatus.

According to the present invention, the sliding surface can be plated without lubrication by using it at the base end portion of the spindle of the chuck cone, and it can efficiently generate high-temperature heat at a low voltage without causing abnormal discharge. The remarkable effect that the current collection member for cylinder body plating apparatuses and plating apparatus which can be prevented can be provided is achieved. The current collecting member for the cylinder body plating apparatus of the present invention does not require lubrication, so there is no problem with oil, the voltage is about 2/3 that of the conventional voltage, efficiency is high, and heat is also generated. It can be suppressed to about 40 ° C. Furthermore, the cylinder body plating apparatus of the present invention can prevent the occurrence of sparks, and is excellent in wear resistance, conductivity and durability. The present invention is particularly suitably used for a plating apparatus for gravure plate making.

It is a schematic diagram which shows one embodiment of the cylinder body plating apparatus of this invention. It is a schematic diagram which shows the conventional cylinder body plating apparatus.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the illustrated examples are shown by way of example, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention. .

In FIG. 1, reference numeral 10 denotes a cylinder body plating apparatus of the present invention, and reference numeral 12 denotes a current collecting member for the cylinder body plating apparatus of the present invention.
The current collector 12 for a cylinder body plating apparatus according to the present invention holds both ends of a cylinder body with a chuck cone, and rotates the cylinder body to the base end of the chuck cone of the cylinder body plating apparatus 10 for plating. A current collecting member 12 that is attached and rotated, and includes a cylindrical base material 14 made of a metal body, and oil-impregnated carbon or oil-impregnated carbon provided on the sliding surface of the cylindrical base material 14. A current collecting member for a cylinder body plating apparatus, comprising a plurality of lubricating regions 16 made of a contained resin.

A cylinder body plating apparatus 10 according to the present invention is a plating apparatus using the current collector member 12 for a cylinder body plating apparatus, a plating tank, a chuck cone provided in the plating tank, for gripping and rotating the cylinder body, The current collecting member 12 attached to the proximal end of the spindle 30 of the chuck cone, the conductive metal fixing member 18 brought into contact with the sliding surface of the current collecting member 12, and the conductive metal fixing An electric wire 20 connected to the member 18, and the current collecting member 12 is provided with a cylindrical base material 14 made of a metal body and scattered on the sliding surface of the cylindrical base material 14. A cylinder body plating apparatus having a plurality of lubricating regions 16 made of oil-impregnated carbon or an oil-impregnated carbon-containing resin.

The cylinder body plating apparatus 10 causes the current to flow through the conductive metal fixing member 18 by rotating the current collecting member 12 in a state of being in contact with the conductive metal fixing member 18 as a current-carrying metal. It collects electricity. If the cylinder body is on the negative electrode side, current can flow from the electric wire 20 connected to the conductive metal fixing member 18 to the cylinder body, and if the cylinder body is on the positive electrode side, the electric wire 20 can be supplied. Since an electric current flows through the external device, electricity can be supplied to the externally connected device. Thus, in the current collecting member 12 of the present invention, depending on whether the cylinder body side is a negative electrode or a positive electrode, both the supply of electricity to the cylinder body side and the supply of electricity from the cylinder body side to the external connection device are performed. Is possible.

In the present invention, the sliding surface of the cylindrical base material 14 of the current collecting member 12 is provided with a plurality of lubrication regions 16 made of oil-impregnated carbon or oil-impregnated carbon-containing resin. The surface can be plated without lubrication, and can efficiently generate low-voltage and high-temperature heat generation.

In FIG. 1, although the example which used the brass as said metal body was shown, if the material of the said cylindrical base material 14 is a metal, there will be no restriction | limiting in particular, For example, iron, copper, aluminum, those alloys, etc. will be mentioned It is done.

The shape of the lubricating region 16 is not particularly limited, but is preferably a circular shape as shown in FIG. The plurality of lubrication regions 16 may be randomly provided on the sliding surface of the cylindrical base material 14, but the plurality of lubrication regions 16 are preferably formed uniformly on the sliding surface.
The method for forming the lubrication region 16 is not particularly limited. For example, a cylindrical metal body is used as the cylindrical base material 14, and a predetermined surface of the metal body is coated with oil-impregnated carbon or an oil-impregnated carbon-containing resin. In addition, a lubrication region 16 may be provided, and a net-like metal body is used as the cylindrical base material 14, and the mesh or surface of the net-like metal body is filled with oil-impregnated carbon or an oil-impregnated carbon-containing resin. The lubricating region 16 may be provided by coating. Furthermore, a metal body having a plurality of holes or recesses may be used as the cylindrical base material 14, and the oil-impregnated carbon or the oil-impregnated carbon-containing resin may be fitted into the holes or recesses of the metal body to provide the lubrication region 16. .

As the oil-impregnated carbon, carbon powder in which oil such as lubricating oil is kneaded is preferably used. As the oil-impregnated carbon-containing resin, a synthetic resin containing carbon powder in which oil such as lubricating oil is kneaded is preferably used. As the carbon powder, for example, carbon powder or graphite powder is preferable, and porous graphite powder is more preferable.
There is no restriction | limiting in particular as said synthetic resin, A well-known synthetic resin can be used, For example, a fluororesin, a polyamide resin, a polyethylene resin, a polyacetal resin, a polyurethane resin, a phenol resin, an epoxy resin, a polyester resin, a polyketone resin etc. Can be mentioned. The oil-impregnated carbon and the oil-impregnated carbon-containing resin may contain other additives.

In FIG. 1, although the copper fixing member 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. , Copper, aluminum and alloys thereof.

It is preferable that the current collecting member 12 is a bearing for the spindle 30 of the chuck cone.

For example, by incorporating the cylinder body plating apparatus 10 of the present invention into the fully automatic gravure plate making processing system of Patent Document 2, a fully automatic gravure plate making processing system of the present invention is obtained. Among these, as disclosed in Patent Document 2, in particular, a fully automatic type that performs plate making processing by transferring plate making rolls one after another to a plate making processing unit using only a non-traveling industrial robot without using a stacker crane. It is preferable to incorporate the plating apparatus of the present invention into a gravure plate-making processing system. The fully automatic gravure plate processing system of the type disclosed in Patent Document 2 can manufacture gravure plate rolls more quickly than before, can save space, and can be used at night. This is because unmanned operation is possible, and the production line can be flexibly customized, and it is a fully automatic gravure plate processing system that can meet various customer needs.

As described above, when the cylinder body plating apparatus of the present invention is used, when the plate making process is performed by the plating apparatus in the fully automatic gravure plate making processing system, the sliding surface can be plated without lubrication, and abnormal discharge is caused. Occurrence, no problems caused by oil, low voltage of about 2/3 compared to conventional, good efficiency, heat generation can be suppressed to about 40 ℃, to prevent high temperature heat generation Can do. Furthermore, the cylinder body plating apparatus of the present invention can prevent the occurrence of sparks, does not cause spark marks, has excellent wear resistance, and even if it is plated for a long time, the current collecting member and the conductive metal The made fixing member can maintain good conductivity and has excellent durability.

Hereinafter, the present invention will be described more specifically with reference to examples. However, it is needless to say that these examples are shown by way of example and should not be interpreted in a limited manner.

Example 1
Except for the configuration shown in FIG. 1 as the cylinder body plating apparatus, an apparatus having basically the same structure as that of the conventional cylinder body plating apparatus was used. A current collecting member 12 was used at the base end of the chuck cone spindle. As the current collecting member 12, SPB-7590100 manufactured by Oiles Kogyo Co., Ltd. was used. As the plating solution, a chromium plating solution having a chromic acid concentration of 250 g / L and a sulfuric acid concentration of 2.5 g / L was used.

As the cylinder to be processed, an aluminum core cylindrical substrate having a circumference of 800 mm and a surface length of 1250 mm is used. Both ends of the cylinder to be processed are chucked and attached to the plating tank, and the chrome plating solution is overflowed. I was killed. The rotational speed of the cylinder to be treated was 100 rpm, the plating solution temperature was 55 ° C., the current density was 30 A / dm ² (current 3000 A), and the voltage was 6V. A plating treatment was performed for 10 minutes under these conditions, and a uniform plating film having a thickness of 6 μm with no occurrence of spots or pits on the surface was obtained. Further, the heat generation of the current collecting member could be suppressed to about 40 ° C.

<Abnormal discharge generation test>
The plating process for 10 minutes was repeated 144 times under the same conditions as in Example 1 (total 24 hours). Chromium consumed by plating and additive components (CHRIO RX-R manufactured by Okuno Pharmaceutical Co., Ltd.) were automatically supplied by an automatic supply device. Although the occurrence of abnormal discharge was observed, the occurrence of abnormal discharge was not confirmed.

<Behavior confirmation test>
Under the same conditions as in Example 1, the current collecting member 12 was attached to the plating tank, chrome plating was performed continuously, the temperature of the conductive metal fixing member 18 during the test, and the conductive metal fixing member 18 after the test. The behavior of the current collecting member 12 and the conductive metal fixing member 18 before and after the test was confirmed. The test conditions are as follows.
Test time: 22 hours, number of cylinders used: 57, current value flowing through the cylinder: 3000 A, plating voltage: 7.0 V-7.2 V, cylinder rotation speed: 340 rpm.
During the test, the occurrence of sparks was not confirmed, and the temperature of the conductive metal fixing member 18 was as follows: average temperature: left 43.5 ° C., right 49.9 ° C., maximum attained temperature: left 51.0 ° C., right 59. The temperature was 0 ° C., and high temperature heat generation was prevented. Further, after the test, there was no spark scar and the conductive metal fixing member 18 was not worn. Further, the 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 configuration shown in FIG. 1 was used as a plating apparatus. A current collecting member 12 was used at the base end of the chuck cone spindle. As the current collecting member 12, SPB-7590100 manufactured by Oiles Kogyo Co., Ltd. was used. As a plating solution, a copper plating solution of copper sulfate 200 g / L, sulfuric acid 100 g / L, and chloride ions 100 mg / L was used.
As the cylinder to be processed, an aluminum core cylindrical base material having a circumference of 800 mm and a surface length of 1250 mm is used. I was killed. The rotational speed of the cylinder to be treated was 250 rpm, the plating solution temperature was 45 ° C., the current density was 30 A / dm ² (current 3000 A), and the voltage was 6V. A plating treatment was carried out for 10 minutes under these conditions, and a uniform plating film having a thickness of 60 μm with no occurrence of spots or pits on the surface was obtained. Further, the heat generation of the current collecting member could be suppressed to about 40 ° C.

<Abnormal discharge generation test>
The plating process for 10 minutes was repeated 144 times under the same conditions as in Example 2 (total 24 hours). About the copper plating component consumed by plating, it automatically replenished with the automatic replenishment apparatus. Although the occurrence of abnormal discharge was observed, the occurrence of abnormal discharge was not confirmed.

(Comparative Example 1)
The conventional plating apparatus 40 shown in FIG. 2 was used as the plating apparatus, and the plating process was performed for 10 minutes in the same manner as in Example 1 except that the lubricating oil was supplied to the current collecting member. The conventional plating apparatus 40 uses a current collecting member whose sliding surface is made of iron as the current collecting member 32 used at the base end of the spindle of the chuck cone.
In Comparative Example 1, lubricating oil enters between the rotating iron current collecting member 32 and the conductive metal fixing member 18 so that current does not easily flow, and a sufficient plating film cannot be obtained at a voltage of 6 V. In order to obtain a uniform plating film of 6 μm, a high voltage of 9 V is necessary, and the current collecting member generated heat to 120 ° C. due to friction and difficulty in flowing current.

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

<Behavior confirmation test>
Under the same conditions as in Comparative Example 1, a current collecting member 32 having a sliding surface made of iron is attached to the plating tank, lubricating oil is supplied to the current collecting member, and continuous chrome plating is performed. The behavior was confirmed under the same test conditions as in.
During the test, sparks occurred, and the current collecting member 32 and the conductive metal fixing member 18 were not energized during the test, so the test was stopped midway. The temperature of the conductive metal fixing member 18 at the time of the test was an average temperature of about 70 ° C. and a maximum temperature reached: 120 ° C. or more, and high-temperature heat generation was confirmed. In addition, after the test, countless spark marks were confirmed, and the conductive metal fixing member 18 was severely worn starting from the spark marks.

10: Cylinder body plating apparatus, 12: Current collecting member for cylinder body plating apparatus, 14: Cylindrical base material, 16: Lubrication area, 18: Fixing member made of conductive metal, 20: Electric wire, 30: Spindle of chuck cone, 32: Iron current collecting member, 40: Conventional plating apparatus.

Claims

A current collecting member that is attached to the base end of the chuck cone of a cylinder body plating apparatus that grips both ends of the cylinder body with a chuck cone and rotates the cylinder body to perform plating, and is rotated.
A cylindrical substrate made of a metal body;
A plurality of lubricating regions composed of oil-impregnated carbon or oil-impregnated carbon-containing resin provided scattered on the sliding surface of the cylindrical base material;
A current collecting member for a cylinder body plating apparatus.
The current collecting member for a cylinder body plating apparatus according to claim 1, wherein the lubricating region is circular.
A plating tank,
A chuck cone provided in the plating tank for gripping and rotating the cylinder body;
A current collecting member attached to the proximal end of the chuck cone and rotated;
A conductive metal fixing member brought into contact with the sliding surface of the current collecting member;
An electric wire connected to the conductive metal fixing member,
A plurality of lubrications in which the current collecting member is composed of a cylindrical base material made of a metal body, and oil-impregnated carbon or oil-impregnated carbon-containing resin provided on the sliding surface of the cylindrical base material. And a cylinder body plating apparatus.
The cylinder body plating apparatus according to claim 3, wherein the lubrication region is circular.
The cylinder body plating apparatus according to claim 3 or 4, wherein the current collecting member is a bearing of a spindle of the chuck cone.
A fully automatic gravure plate-making processing system comprising the cylinder body plating apparatus according to any one of claims 3 to 5.