JPH0364499A - Multistage plating barrel - Google Patents

Abstract

PURPOSE:To improve the productivity in plating various objects by vertically arranging the perforated drums to be packed with an article to be plated in multiple stages. CONSTITUTION:Articles to be plated are packed in the freely rotatable perforated drums 11 and 12 of the plating barrel device 10 and plated. In this case, an idle wheel 18 is provided between the drums 11 and 12. The drums are vertically set in two stages, fixed to a common frame 14 and rotated by one prime mover 13 through gear mechanisms 15 and 16. An electrode 17 is provided in the drum. Consequently, various objects are efficiently plated, the productivity is improved, and the quality is ameliorated by selecting the optimum condition for each drum.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention involves filling a rotatable perforated drum with an object to be plated (hereinafter referred to as object) and immersing it in a plating bath. The present invention relates to a plating barrel that performs batch plating.

[Prior art] A plating barrel is a polygonal cylinder (hereinafter referred to as a drum) with many slits or small holes in the wall, and electrodes are passed through the interior of the drum, and the drum is immersed in a plating bath. This device electroplates the filled object by driving the drum in a plating solution using a morph.

A conventional plating barrel 1 is equipped with one drum 2, as shown in FIG. That is, one motor 3 drives one drum 2. With the conventional plating barrel 1, when plating a large amount at a time, the size of the drum can be increased. ) Increase the number of barrels l.

(2) Increase the number of times of processing.

(3) If the objects have different shapes and sizes, put them into the book drum at the same time.

I was dealing with this.

When increasing the number of barrels 1 for processing, it is necessary to prepare as many plating tanks as the number of barrels, or to prepare a plating tank large enough to accommodate the number of barrels at once. In addition, since each barrel I is independent, it is necessary to prepare anodes for plating for each barrel, and for the power supply, a high-capacity power supply must be prepared, or Alternatively, it must be prepared for each barrel, making the work complicated. That is, there are problems such as securing the space necessary to install such equipment, adding more equipment, and the complexity of the work.

In addition, when increasing the number of times of processing, there is no problem in terms of adding equipment or securing an installation location, but there is a problem in that the processing takes a long time.

Furthermore, if the objects have different sizes and shapes, plating can be performed by simultaneously filling several kinds of objects into one drum at a time. However, depending on the shape and size of the object, the diameter, length, rotation speed, dummy diameter, and capacity of the drum must be adjusted.
It is desirable to select each of them, and if plating is performed by simultaneous filling, it is difficult to control the thickness and variation of each plating film to the same degree, so it is better to avoid simultaneous filling as much as possible.

By the way, as a conventional product, there is a multi-tank plating barrel in which one drum 2 is divided into several parts. This barrel has the same diameter or rotational speed of the drum 2 in each tank, and it is not possible to perform plating on various drums with different conditions such as diameter, length, and rotational speed at the same time. This is effective when the shapes and sizes of the plating films are the same, but when they are different, there is a problem that the thickness and variation of each plating film will be different, as described above.

[Problem to be Solved by the Invention 1] In view of the above-mentioned circumstances, the present invention provides a multi-stage plating barrel that occupies a small floor area and can perform large-scale processing, and can control the thickness and variation of the plating film on each drum to the same degree. The purpose is to provide

[Means for Solving the Problems] The present invention provides a plating barrel in which an object is charged into a drum and plating is performed by rotating the drum while circulating a plating solution, in which the drum is vertically stacked in multiple stages. This is a multi-stage plating barrel characterized by being provided with one drive unit that interlocks and drives these drums.

[Function J The multi-stage plating barrel is a plating barrel that can perform a plurality of types of plating processes at one time by installing drums in multiple stages in the vertical direction.

In a multi-stage plating barrel, drums can be arranged vertically as long as there is room for dimensions, although it depends on the size of the plating tank, and the number of drums is not limited.

The multi-stage plating barrel is designed to solve the conventional equipment problems, space problems, workability, and time problems by making the drum of the plating barrel multi-stage in the vertical direction. - It is a barrel that can perform multiple types of plating treatments at the same time.

In the multi-stage plating barrel, the drums are arranged vertically in multiple stages, so that all the drums can be driven by - motors via gears or the like. In other words, the barrel itself is
- Since it is a stand, there is no need to prepare any more equipment than that, just a long (deep) vertical plating tank, an anode, and a high-capacity plating power supply. Problems, work complexity, and time issues can be greatly improved.

In addition, by changing the diameter, length, and rotation speed of each mounted drum, the multi-stage plating barrel can maintain the same thickness and variation in plating film for each drum, even when the shape and size of the target object differs. can be controlled.

In addition, the multi-stage plating barrel has the following features: (1) Although it depends on the size of the plating tank, there is no limit to the number of drums that can be arranged vertically as long as there is room for dimensions.

(2) Each drum can be removed, and drums can be attached and plated according to the number of drums to be plated.

(3) By attaching one gear between the drums, the drums can rotate in the same direction. Also,
There is no limitation as to whether or not idle gears are installed between the drums.

(4) By making the plates on both sides of the multi-stage plating barrel expandable, you can select a barrel of any height, and it can be used in a variety of plating baths depending on the height of the barrel. can.

(5) The diameter, length, and rotational speed of the mounted drums do not need to all be the same, and can be changed as necessary.

[Example] FIG. 1 shows a perspective view of a multi-stage plating barrel 10 of a two-stage embodiment of the apparatus of the present invention. In this embodiment, an idle gear 18 is provided between hexagonal drums 11 and 12 having different diameters, stacked in two layers (upper and lower), and mounted within a common frame 14.
A single prime mover 13 is used and rotated simultaneously and in the same direction by gear mechanisms 15 and 16. Further, each drum is provided with an electrode]7 inside the drum.

In the embodiment, drums 11, 12 of different sizes are arranged on the upper and lower stages, and are connected by gears 15, 16 of different sizes,
At different rotational speeds, both rotate in the same direction by inserting idler gears 18. The diameters of the drum and gear do not need to be different sizes, and may be the same diameter as necessary. Furthermore, it is not always necessary to insert an idle gear.

The drum of the multi-stage plating barrel may be fixed or removable, but is not limited thereto.

It is preferable to make each drum removable and attach and plate the drums according to the number of drums to be plated.

The length or diameter of the drum to be attached to the multi-stage plating barrel may be freely selected depending on the object.

By configuring the frames 14 on both sides of the multi-stage plating barrel to be expandable and retractable, a barrel of any height can be selected, and it can be used in a variety of plating tanks depending on the height of the barrel. .

Below, we will discuss the plating film thickness of each sample plated using this multi-stage plating barrel and the conventional single plating barrel. This is a coated chip-shaped sample.

Example 1 A 300 cc steel pole with a diameter of 12 mm as a dummy and sample 1 (2.0 mm x 1.2 mm x 0.
100 porcelain insulators coated with silver as external electrodes were filled at both ends of the 4 mm width.

In addition, the lower drum (diameter 120mm, length 150mm
), a 400 cc steel pole with a diameter of 1.6 mm was used as a dummy, and sample 2 (3.2 mm x 1, 6 m
100 porcelain insulators coated with silver as external electrodes were filled at both ends in the width direction of m x 1.0 mm.

Thereafter, the barrel was immersed in a Watts bath, and nickel plating was performed at a current of 20 A for 1 hour.

The upper drum has a rotation speed of 8.7 rpm,
The rotation speed of the lower drum was set to 6 rpm.

Comparative Example 1 Drum of the conventional single-type plating barrel 1 shown in FIG.
300cc steel pole with a diameter of 1.2mm as a dummy and sample 3 (2
,0mm x 1.2mm x 0.4mm
100 porcelain insulators coated with silver were filled at both ends in the width direction as external electrodes.

Thereafter, the barrel was immersed in a Watts bath, and nickel plating was performed at a current of 20 A for 1 hour.

Note that the rotation speed of the drum was set at 8.7 rpm.

Comparative Example 2 Drum of the conventional single-type plating barrel 1 shown in FIG.
120 mm in diameter and 150 mm in length), and a 400 cc steel pole with a diameter of 1.6 mm as a dummy and sample 4 (
100 porcelain insulators each measuring 3.2 mm x 1.6 mm x 1.0 mm and coated with silver as external electrodes were filled at both ends in the width direction.

Thereafter, the barrel was immersed in a Watts bath, and nickel plating was performed at a current of 20 A for 1 hour.

Note that the rotation speed of the drum was set to 6 rpm.

Comparative Example 3 Drum of the conventional single plating barrel 1 shown in FIG.
80 mm in diameter and 150 mm in length), and a 300 cc steel pole with a diameter of 1.2 mm as a dummy and sample 5.
(2.0mm x 1.2mm x 0.4m
Sample 6 ('32 mm x 1.5 m)
100 porcelain insulators coated with silver as external electrodes were filled at both ends in the width direction of m x 1.0 mm.

Thereafter, the barrel was immersed in a Watts bath, and nickel plating was performed at a current of 20 A for 1 hour.

Note that the rotation speed of the drum was set to 8.7 rpm.

Measurement Results Table 1 shows the results of measuring the nickel plating thickness of each of Samples 1 to 6 shown in Example 1 and Comparative Examples 1 to 3 using a microscope.

1 From Table 1, the plating film thickness of samples 1 and 2 plated using the multi-stage plating barrel according to the present invention shows that although the sizes of the samples are different, there is some variation between the two.
There is no significant difference in the average values. In addition, there is a slight difference in the average values between Sample 3, Sample I, Sample 4, and Sample 2 of the example, which were each plated using a conventional single-drum barrel, but the variation is almost non-existent. There is no difference.

With the apparatus of the embodiment, simultaneous processing is possible, and good plating can be obtained with high efficiency.

On the other hand, there are large differences in variations and average values between Samples 5 and 6, which were simultaneously filled and plated using a conventional single-drum barrel.

2 Effects of Invention E According to the present invention, it is possible to efficiently plate a wide variety of images, improve productivity, prevent increase in floor space, and select the optimum conditions for each drum. Improvements in construction and quality can be expected.

In the multi-stage plating barrel, the length or diameter of the drums attached to the barrel need not be the same length or the same diameter, and can be freely selected according to the target object. Furthermore, by changing the diameter of the drum, the rotation speed can also be changed.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a perspective view of a conventional device. 10-・-barrel, 11.12-・-drum, 13-・
- Drive unit, 14...- Frame, 15.16...- Drawing wheel, 17...- Electrode, 18... Idle gear

Claims (1)

[Claims] 1. In a plating barrel in which a rotatable perforated drum is filled with articles to be plated and the drum is immersed in a plating bath for plating, a plurality of drums are arranged in multiple stages in the vertical direction on a drum support column. , a multi-stage plating barrel characterized by being provided with one drive unit that drives these drums in conjunction with each other.