KR100550860B1 - A rotary type barel coating apparatus - Google Patents

Abstract

The present invention is provided with a barrel plating tank filled with a predetermined amount of electrolyte, a barrel container immersed in the electrolyte of the barrel plating tank, a rectifier for supplying current to the barrel container and the electrolyte, and a driving motor for rotating the barrel container in one direction. An apparatus for plating a chip component filled in a barrel container, the apparatus comprising: an outer flange provided on each of left and right sides of the barrel container and having a guide member for guiding a cathode rod extending from the rectifier in the center into the barrel container; A driven rotary plate connected to the one side outer flange and a plurality of gap maintaining members through which a driving source of the driving motor is transmitted; An idle rotating plate connected to the other outer flange and a plurality of gap maintaining members; It is assembled to the center of the driven, the idle rotating plate is mounted to the side plate frame, and comprises a bush member through which the cathode rod penetrates.

According to the present invention, a direct frictional part is not formed between the bushing member supporting the rotation of the barrel container and the barrel container in which the chip parts are accommodated, thereby preventing wear of the barrel container and preventing plating failure due to pinching of the chip parts. can do.

Barrel plating tank, barrel container, bushing member, outer flange, driven rotating plate, spacing member

Description

Rotary Barrel Coating Equipment {A rotary type barel coating apparatus}             

1 is a cross-sectional view of a general rotary barrel plating apparatus viewed from the front.

2 is a cross-sectional side view of a general rotary barrel plating apparatus.

Figure 3 is a perspective view of a rotary barrel plating apparatus according to the present invention.

Figure 4 is a front view showing a rotary barrel plating apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

11: barrel plating tank 12: barrel container

13: rectifier 13a: cathode rod

13b: anode rod 14: drive motor

101,102: outer flange 101a, 102a: guide member

103: driven rotating plate 104: idle rotating plate

105,106: bush member 111,112: spacing member

The present invention relates to a rotary barrel plating apparatus used to plate chip parts, and more particularly, does not form a direct frictional portion between the bushing member supporting the rotation of the barrel container and the barrel container in which the chip parts are accommodated. The present invention relates to a rotary barrel plating apparatus which is improved to prevent abrasion and to prevent plating defects due to pinching of chip components.

In general, the process of manufacturing chip components such as varistors, chip inductors, and multi-layer ceramic capacitors (MLCCs) includes: 1) uniformly reacting ceramic capacitor main raw material oil with additives as additives. 2) mix the synthesized ceramic raw material, polymer binder and solvent, 3) mature the mixed slurry in a stable state, and 4) coat the mature ceramic slurry with a certain thickness on the polymer film (PET). 5) The formed tape is dried by passing through a drying furnace, and 6) a silk screen is used to print the desired capacitance design value pattern to form internal electrodes. 7) Paste shape of the printed internal electrodes. In order to maintain the ceramic sheet is dried in a drying furnace, 8) the ceramic sheet is laminated in multiple layers to obtain the desired capacity value, 9) the laminated state 10) cutting the stacked ceramic bars into chips of a predetermined size, 11) debinding so that only binders included in the cut ceramic chips are removed, and 12) removing them. The binder-completed chip is baked by heat treatment in a high temperature electric furnace, and 13) the baked chip is polished to handle sharp edges, and 14) an external electrode is formed outside the chip for connection with an internal electrode formed inside the chip. ) Heat-treat the chip where the internal and external electrodes are terminated and fix it on the ceramic surface.16) Nickel and tin plating is applied to the external surface of the chip to give solderability to the external electrode of the chip. Are sorted by capacity deviation (J, K, M, Z), and the insulation resistance (IR) defect is sorted. 18) The chip parts are taped and packaged to enable surface mounting.

In the process of manufacturing the chip parts, as described above, the termination of the external electrode cannot be soldered directly. Therefore, nickel (Ni) and tin (Sn) are sequentially plated with the outermost electrode so that soldering is performed smoothly. The plating method used is barrel plating.

The barrel plating is a method of plating a large amount of articles such as shapes and small chip parts at a time, and the barrel is immersed in the plating bath while the article and the articles are in contact with each other while friction polishing, so that the current is intermittently contacted with the rod of the cathode. It is a plating that causes a considerable luster to the product because it is plated.

1 is a cross-sectional view of the general rotary barrel plating apparatus from the front, Figure 2 is a cross-sectional view of the general rotary barrel plating apparatus from the side, the conventional barrel plating apparatus 10, as shown, a barrel plating tank filled with electrolyte (11), the barrel component (12) and the barrel container (12), which are filled with the chip component (1) and the medium (2) to be plated in the inner space and immersed in the electrolyte of the barrel plating tank (11). It is composed of a rectifier 13 for supplying current and a drive motor 14 for rotating the barrel container 12 in one direction.

In the barrel container 12 in which the chip component 1 and the medium 2 are mixed, a bush member 16a having negative electrode rods 13a extending from the rectifier 13 is provided at left and right ends of the barrel container 12. It is connected to the inner space through the (16b), the current is supplied through the medium (2), the anode rod (13b) extending from the rectifier 13 is immersed in the barrel plating tank (11). As the medium 4, steel balls or the like having electrical conductivity are mainly used.

On the other hand, the structure in which the barrel container 12 rotates in one direction as a driving source of the drive motor 14 is a drive gear 15a provided on the drive shaft of the drive motor 14 and the shaft portions of the left and right ends of the barrel container 12. Engage the driven gears 15b provided in any one of (12a) and (12b) so that the chip parts (1) and the medium (2) in the barrel container (12) are evenly mixed when the drive motor (14) is driven. This prevents the chip parts from sticking to each other.

Then, the negative electrode rod 13a enters the container into the shaft portions 12a and 12b of the barrel container 12, and the side plate frame 18 is smoothly rotated in the barrel container 12 during the plating operation. Supported bushing members 16a and 16b are mounted, respectively.

However, the bush members 16a and 16b are worn while the outer container is in contact with the inner circumferential surface of the shaft portions 12a and 12b while the barrel container 12 is rotated in one direction together with the driven gear 15b. When the degree of wear progresses excessively, a gap is generated between the outer surface of the bush members 16a and 16b and the inner circumferential surface of the shaft portions 12a and 12b.

As the chip part 1 having a thin thickness is sandwiched between the gaps, a plating defect of the chip part 1 is formed thinly or poorly formed, thereby degrading product reliability.

Then, in the event of excessive wear between the bush members 16a and 16b and the shaft portions 12a and 12b of the barrel container 12, the plating operation is stopped, and the barrel container 12 is completely disassembled from the side plate frame 18. Then, since the work to replace the bushing member (16a, 16b) assembled to the shaft portion (12a) (12b) has to perform the work of replacing the bushing member, there is a problem that takes too much work time.

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to rotate the barrel container without direct contact between the barrel container and the bushing member to prevent pinching of the thin chip components, replacement of the bushing member The present invention seeks to provide a rotary barrel plating apparatus that can perform a task simply and quickly.

As a technical means for achieving the above object, the present invention

The barrel container is provided with a barrel plating tank filled with a predetermined amount of electrolyte, a barrel container immersed in the electrolyte of the barrel plating tank, a rectifier for supplying current to the barrel container and the electrolyte, and a driving motor for rotating the barrel container in one direction. In the device for plating the filled chip components,

Outer flanges provided at left and right sides of the barrel container and having guide members for guiding a cathode rod extending from the rectifier at the center into the barrel container;

A driven rotary plate connected to the one side outer flange and a plurality of gap maintaining members through which a driving source of the driving motor is transmitted;

An idle rotating plate connected to the other outer flange and a plurality of gap maintaining members;

The driven, the child is assembled to the center of the rotating plate is mounted to the side plate frame, by providing a rotary barrel plating apparatus characterized in that it comprises a bushing member through which the cathode rod penetrates.

Preferably, the outer circumferential surface of the driven rotating plate is formed with a drive gear and a gear bit which is driven by a drive source of the drive motor.

Preferably, the gap maintaining member is a rod member having a predetermined length as the fastening members 111a and 112a are assembled between the one outer flange and the driven rotating plate and between the other outer flange and the idle rotating plate.

Preferably, the outer flange is formed on a disk plate having a size larger than the outer diameter of the barrel container.

Hereinafter, the present invention will be described in more detail.

Figure 3 is a perspective view of a rotary barrel plating apparatus according to the present invention, Figure 4 is a front view showing a rotary barrel plating apparatus according to the present invention.

In the barrel plating apparatus 100 of the present invention, the barrel container 12 is immersed in the barrel plating tank 11 filled with an electrolyte solution containing a metal component, and the rectifier 13 is respectively provided in the barrel container 12 and the electrolyte solution. The direct contact between the barrel container 12 rotated in one direction by the driving motor 14 and the member for rotatably supporting the same in the operation of plating the chip component 1 accommodated in the barrel container 12 while supplying a current It can be configured to prevent the pinch of the chip component (1) and excessive wear of the barrel container (12).

3 and 4, the apparatus 100 is composed of an outer flange 101, 102, driven rotating plate 103, idle rotating plate 104 and the bush member 105, 106, The outer flanges 101 and 102 are plate members respectively provided on the left and right sides of the barrel container 12 in which the chip component 1 and the medium 2 are filled in the inner space.

The outer flanges 101 and 102 are replaceable as plate members integrally provided to seal the left and right sides of the barrel container 12 or bolt members not shown on the left and right sides of the barrel container 12. Plate member to be assembled.

In addition, through-holes are formed in the central portion of the outer flanges 101 and 102 so that the guide members 101a and 102a are interchangeably mounted as a plurality of bolt members, and the guide members 101a and 102a. The negative hole 13a extending from the rectifier 13 is inserted into the barrel hole 12 to supply current to the barrel container 12, respectively.

The guide members 101a and 102a are preferably made of an insulating material such as plastic so as not to conduct current through the cathode rod 13a.

In addition, the driven rotating plate 103 includes a plurality of gap holding members 111 having one end connected to one side flange 101 of the pair of outer flanges 101 and 102 provided on the left and right sides of the barrel container 12. It is connected via a, it is a rotating member to which the drive source of the drive motor 14 is transmitted.

On the outer circumferential surface of the driven rotating plate 103, it is preferable to form a gear part that is geared with the drive gear 14a which is rotated by the drive source of the drive motor 14, wherein the driven rotating plate 103 is the drive motor ( The drive sprocket provided in the drive shaft of 14) and the rotating sprocket connected through the chain member or the rotating pulley connected through the driving pulley and the belt member may be replaced by various power transmission means.

And, the idle rotating plate 104 provided on the opposite side of the driven rotating plate 103 is connected to the other outer flange 102 via a plurality of interval holding member 112, one end of which is connected to the driving motor 14 The driven member is rotated in one direction together with the driven rotating plate 103, barrel container 12 during the driving.

The gap maintaining members 111 and 112 form a gap of a predetermined size between the one outer flange 101 and the driven rotating plate 103 and between the other outer flange 102 and the idle rotating plate 104. It is a rod member of a predetermined length to be assembled in, and the left and right both ends are assembled as fastening members 111a and 112a to facilitate separation of the barrel container 12.

The outer flanges 101 and 102 are larger than the outer diameter of the barrel container 12 so that the assembling work of the spacing members 111 and 112 can be smoothly performed without interference of the barrel container 12. It is preferable to be made in the shape of a disk plate having a size.

Meanwhile, the bush members 105 and 106 are side plates corresponding to the driven and idle rotating plates 103 and 104 so as to smoothly rotate the barrel container 12 in which the chip parts 1 to be plated are internally accommodated. Rotational support members provided between the frames 18a and 18b, respectively.

Through-holes are formed in the center portion of the driven and idle rotating plates 103 and 104 to assemble the bush members 105 and 106, and the bush members 105 and 106 correspond to the side plate frames 18a. A drive shaft 14a rotatably assembled by a drive source of the drive motor 14 is horizontally supported on the side plate frames 18a and 18b by a replaceable assembly as a fastening member on the 18b, and the drive shaft 14a. The driving gear 15a and the intermediate gear 15c which is meshed with the driving gear 15 are provided, and the supporting member is disposed outside the driven and idle rotating plates 103 and 104.

The bushing members 105 and 106 penetrate the cathode rod 13a branched from the rectifier 13, and the cathode rod 13a penetrating through the bushing member 105 and 106 is provided in the driven and idle rotating plates 103 and 104. Entering the inner space of the barrel container 12 through the guide members 103a and 104a, the end of the negative electrode rod 13a is bent to contact the inner surface of the barrel container 12.

The plating of nickel (Ni) and tin (Sn) on the outer surface of the chip component (1) in which the internal and external electrodes are formed by using the apparatus 100 of the present invention having the above-described configuration is first performed in a predetermined size of inner space. Opening the opening (12a) by disassembling the door (not shown) provided on the outer surface of the barrel container 12 having a steel medium with the chip component (1) to be plated through the open opening (12a) Fill in (2).

Then, the door is reassembled to the opening 12a to lower the barrel container 12 in which the opening 12a is closed from the upper portion of the barrel plating tank 11 containing the electrolyte to the lower portion to be immersed in the electrolyte.

In this state, when an external power source is applied to the rectifier 13 and the driving motor 14, the barrel container 12 and the electrolyte through the cathode rod 13a and the anode rod 13b of the rectifier 13. The barrel container 12 is rotated in one direction by the driving source of the driving motor 14 at the same time the cathode and the anode current is supplied to each.

That is, when the drive gear 15a and the intermediate gear 15c are rotated by the drive source of the drive motor 14, the driven rotary plate 103 formed on the outer circumferential surface of the gear part which is meshed with the intermediate gear 15c is the barrel. One side flange 101 of the container 12 and the gap holding member 111 is connected via the medium, the other side of the idle rotating plate 104 of the barrel container 12 is another gap with the outer flange 102 Since the bush members 105 and 106 are assembled between the driven and idle rotating plates 103 and 104 and the side plate frames 18a and 18b through the holding member 112, the barrel The container 12 is to be rotated in one direction together with the driven, idle rotating plate 103 (104).

Here, the barrel container 12 is in direct contact with the bush members 105 and 106 while maintaining a predetermined interval by the driven, idle rotating plate 103 (104) and the gap holding members 111, 112. Since it is rotated in one direction in a state that does not, wear of the barrel container 12 by friction does not occur.

On the other hand, the friction between the bush member (105) 106 is inserted, the idle rotation plate 103 (104) and the bush member 105, 106 during the rotation of the barrel container 12 is made As it occurs, wear occurs.

Accordingly, when excessive wear occurs at the contact portion between the outer surfaces of the bush members 105 and 106 and the driven and idle rotating plates 103 and 104, the plating operation is stopped and the barrel container from the barrel plating tank 11 is stopped. In the state of drawing out 12, disassembling the fastening member for fixing the bush members 105 and 106 to the side plate frames 18a and 18b to easily replace the worn bush members 105 and 106 with new new ones. can do.

In addition, the driven and idle rotating plate (103, 104) is assembled to one end of the gap holding member (111, 112) via the fastening member (111a) (112a), the fastening member (111a) By disassembling 112a, the driven and idle rotating plates 103 and 104 can be easily replaced with new new products, just like the bush members 105 and 106.

According to the present invention as described above, the outer flange is provided on both the left and right sides of the barrel container in which the chip parts are accommodated, the outer flange is connected to the driven, idle rotating plate having a bushing member via the gap holding member, By connecting the drive gear of the driving motor to the rotating plate, the barrel container is rotated in a state where the barrel container and the bushing member are separated from each other. Thus, a gap due to wear is formed in the contact portion between the bushing member and the barrel container as in the prior art. This prevents chip parts from being caught or plating defects in advance.

In addition, the bush members and consumables that wear out the plating for a long time can be replaced easily and quickly without the need for disassembly of the barrel container, thereby improving work productivity and reducing the manufacturing cost by increasing the replacement period of the bush members. Is obtained.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (4)

A barrel plating tank filled with an electrolyte, a barrel container immersed in the electrolyte of the barrel plating tank, a rectifier for supplying current to the barrel container and the electrolyte, and a driving motor for rotating and driving the barrel container in one direction are filled in the barrel container. In the device for plating chip parts, Outer flanges provided at left and right sides of the barrel container and having guide members for guiding a cathode rod extending from the rectifier at the center into the barrel container; A driven rotary plate connected to the one side outer flange and a plurality of gap maintaining members through which a driving source of the driving motor is transmitted; An idle rotating plate connected to the other outer flange and a plurality of gap maintaining members; And a bushing member assembled to the driven and idle plate, mounted to the side plate frame, and through which the cathode rod penetrates. The method of claim 1,  Rotary barrel plating apparatus characterized in that the outer circumferential surface of the driven rotating plate is formed with a drive gear and a gear bit which is driven by the drive source of the drive motor. The method of claim 1, The gap retaining member is a rotary barrel plating apparatus, characterized in that the bar member is assembled between the left and right sides and the driven rotating plate, and between the other outer flange and the idle rotating plate as a fastening member. The method of claim 1, The outer flange is a rotary barrel plating device, characterized in that made of a disk plate having a size larger than the outer diameter of the barrel container.

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