JPH07316893A - Cylindrical barrel for plating device - Google Patents

Abstract

PURPOSE:To forcibly move the works in a cylindrical barrel in a barrel shaft direction without disposing specific means in this barrel and without increasing its size by specifically arranging and fixing plural body plates having an isosceles triangle shape or trapezoidal shape. CONSTITUTION:The plural body plates 31b to 31d... having the isosceles triangle shape or trapezoidal shape (the body plates 31a, 31h at both ends are formed to a right-angled triangle shape for the purpose of forming the apertures for inlet and outlet of the works) are arranged in such a manner that the bases of the isosceles triangle shapes exist alternately between the adjacent body plates. The body parts 31 of the cylindrical barrels 3 are assembled by fixing the bases of the isosceles triangle shapes to side plates 32 in such a manner that the hypotenuses of the isosceles triangle shapes constitute ridges. Plating treatment is executed by rotationally driving such cylindrical barrel 3, by which the purposes are achieved and the uniform plating layers are efficiently formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a predetermined plating by electroplating or the like on the surface of a component material (hereinafter referred to as "processing object") such as mechanical components such as bolts and nuts, electronic components such as resistors and capacitors. The present invention relates to a cylindrical barrel used in a plating apparatus for forming a layer.

[0002]

2. Description of the Related Art Conventionally, in this type of plating apparatus, as shown in FIG. 5, a cylindrical barrel 3 is rotatably provided on a pair of standing plates 1 via bearings 2, and a tip is provided in the cylindrical barrel 3. On the cathode 4a
Inserting the flexible cathode lead wire 4 formed with
The cylindrical barrel 3 is rotationally driven by transmitting the rotational force of a motor (not shown) to a spur gear 5 formed on the end surface of the cylindrical barrel 3 via a power transmission mechanism 6 including a pinion, a rotary shaft, and a sprocket. I am trying to do it. Further, the plating apparatus has a lifting beam 7 for pulling up the plating apparatus from the plating tank when accommodating or discharging the object to be processed or when performing maintenance and inspection of the plating apparatus. The tubular barrel used in this plating apparatus is formed in a polygonal shape such as a hexagon or an octagon, or in a circular cross-sectional shape.

By the way, in the case of a cylindrical barrel having such a uniform cross-sectional shape, whether the driving method is the rotary type or the swing type, the cylindrical barrel is kept inside the cylindrical barrel during the plating process. Regardless of the amount of movement of the housed object in the axial direction of the cylindrical barrel and whether the power feeding system is the captyre cable type or the power feeding terminal type, the plating processing ability in the axial direction of the tubular barrel is improved. Due to the variation, it was difficult to form a uniform plating layer on the surface of the object to be treated.

Therefore, in order to secure the amount of movement of the object to be processed housed in the cylindrical barrel in the axial direction of the cylindrical barrel,
It has been proposed to form a stirring blade or the like for forcibly moving the object to be processed on the inner peripheral surface of the cylindrical barrel, but in this case, the stirring blade or the like impedes the smooth flow of the plating solution or the stirring blade. However, there is a problem that the object to be treated is entangled with the above, and the stirring blades are damaged. Furthermore, a cylindrical barrel having a rotary shaft with an inclined eccentricity has been devised, but in the case of this cylindrical barrel, a large space is required to rotate the cylindrical barrel, and in comparison with the treatment capacity, equipment is required. Had the problem of becoming larger.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the cylindrical barrel used in the conventional plating apparatus described above.
Without providing a special means for forcibly moving the object to be processed in the cylindrical barrel, and without increasing the size of the equipment, the object to be processed accommodated in the cylindrical barrel can be moved in the axial direction of the cylindrical barrel. An object of the present invention is to provide a tubular barrel for a plating apparatus, which can be forcibly moved to efficiently form a uniform plating layer on the surface of an object to be processed.

[0006]

In order to achieve the above object, a tubular barrel for a plating apparatus of the present invention comprises a plurality of isosceles triangular or trapezoidal body plates and a base of the isosceles triangle or an upper side of the trapezoid. Arrange the lower sides alternately between the adjacent body plates, and fix the base of the isosceles triangle or the upper and lower sides of the trapezoid to the side plate so that the isosceles triangle or the hypotenuse of the trapezoid forms the ridge of the body. The main point is to become.

[0007]

After the object to be treated is housed in the tubular barrel for a plating apparatus of the present invention constructed as described above, the tubular barrel is immersed in the plating solution, and the tubular barrel is rotated or shaken by the driving device. By moving, a plating layer is formed on the surface of the object to be processed. In this case, in the tubular barrel for a plating apparatus of the present invention, the inclination direction in the axial direction of the tubular barrel changes for each adjacent body plate, so that the object to be treated contained in the tubular barrel is
Along with the body plate of the tubular barrel, it is moved in the axial direction of the tubular barrel alternately and sufficient agitation is performed, so that a uniform plating layer can be efficiently formed on the surface of the object to be treated.

[0008]

The present invention will be described below with reference to the illustrated embodiments.

1 to 3 show a first embodiment of a cylindrical barrel for a plating apparatus according to the present invention.

Like the conventional cylindrical barrel shown in FIG. 5, the cylindrical barrel 3 is rotatably disposed on a pair of standing plates via bearings, and a cathode is formed at the tip of the cylindrical barrel 3. The flexible cathode lead wire is inserted, and the rotational force of the motor is transmitted to the spur gear 5 formed on the end surface of the cylindrical barrel 3 through a power transmission mechanism including a pinion, a rotary shaft, and a sprocket. The barrel 3 is rotationally driven to perform the plating process.

The body portion 31 of the tubular barrel 3 has a plurality of isosceles triangular body plates 31 as shown in a developed view of FIG.
b, 31c, 31d, 31e, 31f, 31g (however, the body plates 31a, 31h at both ends are formed in a right-angled triangular shape to form an opening for taking in and out an object to be processed). The bases of the isosceles triangles are arranged so as to be alternately positioned between the adjacent body plates, and the bases of the isosceles triangles are fixed to the side plates 32 so that the hypotenuses of the isosceles triangles are the body portions 31.
It is assembled in a cylindrical shape so as to form the ridge of the.

An opening is formed in the body portion 31 of the cylindrical barrel 3 for taking in and out an object to be processed, and the lid plate 3 is provided in the opening.
3 is attached to the fixing member 34 so as to be detachable or swingable.

The side plate 32 of the cylindrical barrel 3 is provided with a spur gear 5, a bearing 2 is fitted therein, and a circular opening 32a for inserting the flexible cathode lead wire 4 is formed.

Body plates 31a, 31b, 31 of the cylindrical barrel 3
c, 31d, 31e, 31f, 31g, 31h, side plate 3
2. The lid plate 33 is made of a synthetic resin material such as vinyl chloride or polypropylene, and the body plates 31a, 31b, 31c, 31
The d, 31e, 31f, 31g, 31h and the cover plate 33 are provided with pores of a predetermined mesh, for example, pores having a diameter of 1.8 mm at 5 mm intervals so that the plating solution can smoothly flow. The body plates 31a, 31b, 31c, 31d,
Instead of piercing the holes in 31e, 31f, 31g, 31h and cover plate 33, the body plate and the cover plate may be formed into a cage.

When an object to be processed is plated using the plating apparatus having the cylindrical barrel 3 constructed as described above, the cover plate 33 of the cylindrical barrel 3 is opened to cover the inside of the cylindrical barrel 3. After accommodating the processed material, the cylindrical barrel 3 is dipped in the plating solution in the plating tank, and the flexible cathode lead wire disposed in the cylindrical barrel 3 is set to the minus side, and the flexible cathode lead wire is placed in the plating tank outside the cylindrical barrel 3. The positive electrode plate provided is applied positively, and while the cylindrical barrel 3 is rotated by the motor through the power transmission mechanism and the spur gear 5, the negative electrode is contacted with the cathode of the flexible cathode lead wire and applied negatively. A plating layer is formed on the surface of the processed material.

In this case, since the axial tilting direction of the tubular barrel 3 changes for each adjacent body plate, the object to be treated contained in the tubular barrel 3 is along the body plate of the tubular barrel 3. ,
Alternately in the axial direction of the tubular barrel 3, that is, in FIG.
By moving the object on 1b from the left to the right, the object on the trunk plate 31c from the right to the left, the object on the trunk plate 31d from the left to the right ... Stirring is performed, and a uniform plating layer can be formed on the surface of the object to be treated.

FIG. 4 shows a second embodiment of the tubular barrel for a plating apparatus of the present invention.

The body portion 35 of the cylindrical barrel has a plurality of trapezoidal body plates 35b, 35c, as shown in the development view of FIG.
The upper and lower sides of the trapezoid are 35d, 35e, 35f, and 35g (however, the body plates 31a and 31h at both ends are deformed to form openings for taking in and out the object to be processed.). They are arranged so as to be alternately positioned between the adjacent body plates, and the upper side and the lower side of the trapezoid are fixed to the side plates so that the oblique sides of the trapezoid form the ridges of the body portion 35 and are assembled into a tubular shape.

As in the first embodiment, the plating apparatus having the tubular barrel thus constructed opens the cover plate of the tubular barrel to accommodate the object to be treated in the tubular barrel, and then the tubular barrel. The barrel is immersed in the plating solution of the plating tank, the negative electrode of the flexible cathode lead wire arranged inside the cylindrical barrel is applied to the negative electrode, and the positive electrode plate arranged in the plating tank outside the cylindrical barrel is applied to the positive electrode. A plating layer is formed on the surface of the object to be negatively applied by contacting the cathode of the flexible cathode lead wire while rotating the cylindrical barrel by the motor through the power transmission mechanism and the spur gear.

Also in this case, since the axial tilting direction of the tubular barrel changes for each adjacent body plate, the object to be treated contained in the tubular barrel is moved along the body plate of the tubular barrel. , By alternately moving in the axial direction of the tubular barrel,
Sufficient stirring is performed, and a uniform plating layer can be formed on the surface of the object to be treated.

Although the first and second embodiments have been described with respect to the cylindrical barrel for the plating apparatus in which the drive system is the rotary system and the power supply system is the captyre cable system, the present invention is not limited to this. It can be applied not only to the rotary type as described above but also to the swing type, and as the power feeding system to the above-mentioned captyre cable type as well as the power feeding terminal type, and also for the electroless plating device. It can also be applied to a barrel.

[0022]

According to the tubular barrel for a plating apparatus of the present invention, no special means for forcibly moving the object to be processed is provided in the tubular barrel and the equipment is not enlarged. ,
The object to be treated contained in the cylindrical barrel can be moved along the body of the cylindrical barrel alternately in the axial direction of the cylindrical barrel to perform sufficient agitation, and the surface of the object to be treated can be uniformly distributed. It is possible to efficiently form a large plating layer.

[Brief description of drawings]

FIG. 1 is an external view of a first embodiment of a tubular barrel for a plating apparatus of the present invention, in which (a) is a side view and (b) is a front view.

FIG. 2 is a cross-sectional view of the first embodiment of the tubular barrel for a plating apparatus of the present invention, in which (a) is a cross section taken along the line AA of FIG. 1 (b),
(B) shows the same BB cross section.

FIG. 3 is a development view of a body portion of a tubular barrel for a plating apparatus according to a first embodiment of the present invention.

FIG. 4 is a development view of a barrel portion of a second embodiment of the tubular barrel for a plating apparatus of the present invention.

FIG. 5 shows a front view of a conventional plating apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand plate 2 Bearing 3 Cylindrical barrel 31 Body part 31a, ... Body plate 33 Lid plate 34 Fixing member 35 Body part 35a, ... Body plate 4 Flexible cathode lead wire 4a Cathode 5 Spur gear 6 Power Transmission mechanism 7 Lifting beam

Claims (1)

[Claims] 1. A base of an isosceles triangle, wherein a plurality of isosceles triangular or trapezoidal body plates are arranged such that the base of the isosceles triangle or the upper and lower sides of the trapezoid are alternately located between adjacent body plates. Alternatively, a tubular barrel for a plating apparatus, wherein an upper side and a lower side of the trapezoid are fixed to a side plate so that an isosceles triangle or a hypotenuse of the trapezoid forms a ridge of a body.