JP2003034899A - Device and method for treating small piece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treatment device for preventing treatment irregularity, in treating small pieces by using a barrel-shaped vessel with a closed bottom and an opened top, and a liquid such as plating. SOLUTION: The treatment device 1 for small pieces comprises the barrel- shaped vessel 2 with the closed bottom capable of accommodating the small pieces 13 in a storage part 7 surrounded by a bottom part 3 and a side part 5, a hanging part 9 installed in the vessel, and a drive means connected to the hanging part, for moving the vessel up and down. The vessel has inclined holes 15 which are formed so as to disperse on the whole surface of the bottom part and the side part, in order to pass a treatment liquid between inside and outside in the storage part. The inclined holes are constituted so as to move the small pieces to one direction around a central vertical axis of the vessel, while throwing up the small pieces from the bottom part with a flowing-in treatment liquid through the inclined holes, when the vessel is moved downward in the treatment liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus and a processing method used for performing processing such as plating on a small piece used as an electronic component in a mobile phone or the like.

[0002]

2. Description of the Related Art Conventionally, as one method for electrolessly plating a small piece (for example, an electronic component that serves as a metal cover of a circuit component) used as an electronic component in a mobile phone or the like, for example, a container side wall is used. A small piece was put in a hexagonal column-shaped rotary container formed of a mesh material, and the rotary container was placed in a horizontal position with the rotary shaft being horizontal, and was rotated around the rotary shaft in the plating solution. . This rotary container is formed with a lid on which one of the six side walls is removable. The small pieces are put into and taken out of the rotary container by removing the lid from the lid mounting portion to open the rotary container, putting the small pieces in and out, and then attaching the lid again.

However, a rotary container having such a structure has not been considered in the first place until a very small piece is put therein for processing. Therefore, there is no problem if the size of the object to be processed is more than a certain level, but for example, size 3 mm × 3
mm, the plate thickness of which is 0.1 mm, the very small piece is very small when the small piece is taken out of the container after the plating process, and therefore the small piece is attached to the lid of the rotating container. There is a problem that there is a possibility that the small pieces are left behind in the surrounding corners and the like, and it is difficult for the operator to understand that such small pieces are left inside the rotary container.
Therefore, when other types of small pieces are plated later using the rotating container, the small pieces left in the container in the previous work may be mixed into the small pieces to be plated this time. there were. Since a lot of small pieces containing even one such foreign matter cannot be used in the manufacturing process, the entire lot had to be discarded.

Therefore, recently, instead of using a hexagonal columnar rotating container, a small piece is put in a bottomed cylindrical container having an open top, and the container is manually or mechanically placed in a plating solution. The plating method is performed by moving it up and down.

[0005]

However, in the case of manually moving the container up and down, it is difficult to repeat the same work for a long time, and there is also a difference between operators. There were cases where unevenness was caused or small pieces with different plating states were produced depending on the lot. Even when mechanically moved up and down, the small pieces simply repeat irregular floating and sinking in the mesh container, and the relative positions of the small pieces do not change so much, which causes uneven plating. There was an occasion. In addition to the above-described plating treatment, the small pieces may be subjected to degreasing treatment or acid treatment. However, when these treatments are carried out, there is a problem of uneven processing of the small pieces as described above.

An object of the present invention is to provide a processing apparatus and a processing method which use a container having a bottomed cylindrical shape and an open upper part and which do not cause processing unevenness in the processing of small pieces using a liquid such as plating. To do.

[0007]

In order to achieve the above object, the processing apparatus for a small piece according to the invention of claim 1 receives the small piece in a storage portion surrounded by a bottom surface portion and a side surface portion. At least a bottom surface portion and a side surface portion of the container, which includes a possible bottomed cylindrical container, a suspending unit attached to the container, and a drive unit that is connected to the suspending unit to move the container up and down. On the bottom surface, slanted holes for circulating the processing liquid between the inside and the outside of the accommodating portion are formed dispersedly over the entire surface, and the slanted holes are formed in the accommodating portion so that the small pieces are formed. When the container is moved downward in the processing liquid in the stored state, the small piece body is thrown up from the bottom surface part by the processing liquid flowing in through the oblique hole and around the central vertical axis of the container. It is formed so that it can move in one direction It is characterized in.

According to the present invention, when the container is moved downward, the processing liquid flows from the bottom surface portion through the oblique holes so as to form a flow obliquely above the storage portion, and is placed on the bottom surface portion. The small piece body is thrown up from the bottom surface part to move in one direction around the central vertical axis of the container. At the same time, when the side surface is also provided with a slanted hole, the processing liquid is also passed through each slanted hole from one side in the same direction as the flow from the bottom surface around the center vertical axis of the container. Since the small pieces flow in, the moving force in the one direction around the central vertical axis of the container is promoted.
Therefore, since the treatment liquid existing near the surface of each small piece is constantly replaced, the effect of the treatment liquid on the small piece is averaged, and the uneven processing of the small piece is eliminated.

Further, the invention according to claim 2 of the present application is characterized in that, in claim 1, the container is formed so as to be moved up and down with the upper end thereof being positioned on the liquid surface of the processing liquid. And If the upper end of the container is moved up and down within the range of movement above and below the surface of the processing liquid, the surface of the processing liquid is agitated significantly, and irregular turbulence is likely to occur in the processing liquid. However, according to the present invention, since the container is moved up and down while the upper end of the container is positioned on the liquid surface of the processing liquid, it is possible to prevent a large turbulent flow from being generated in the processing liquid due to the vertical movement of the container. This makes it possible to stabilize the flow of the processing liquid that flows into and out of the storage portion through the oblique hole, and makes the processing of the small pieces more uniform.

The invention according to claim 3 of the present application is the method according to claim 1 or 2, wherein the speed of the vertical movement of the drive means is such that the container in the processing liquid in a state where the small piece is stored in the storage portion. When moving up and down, the state in which the small piece body is thrown up from the bottom surface portion and the state in which the small piece body is placed on the bottom surface portion is repeated by the processing liquid flowing in through the oblique hole. It is a thing. According to the present invention, the speed of the vertical movement of the driving means is such that the small pieces repeat the floating in the treatment liquid (in a raised state) and the placement on the bottom portion. Since the movement of the small piece in one direction around the central vertical axis of the step will gradually and substantially uniformly and stably proceed for each repeating unit of the vertical movement, processing unevenness of the small piece is further increased. It will be reduced.

The invention according to claim 4 of the present application is characterized in that, in any one of claims 1 to 3, the speed of the vertical movement of the drive means is variable. According to the present invention, the vertical movement of the container can be adjusted to the most appropriate speed according to the shape and weight of the small piece, the viscosity of the treatment liquid, and the like.

The invention according to claim 5 of the present application is the method according to any one of claims 1 to 4, wherein the suspending portion is
When the container is moved up and down in the treatment liquid, the treatment liquid is formed so as to elastically twist so that the container rotates due to a reaction that flows in through the oblique hole. It is a thing. According to the present invention, since the hanging portion is elastically twisted so that the container is rotated by the reaction that the processing liquid flows in through the oblique hole, the shock applied to the processing liquid by the vertical movement of the container is not affected. It is absorbed and relaxed by the rotation of the container based on the twist. This makes it possible to stabilize the flow of the processing liquid that flows into and out of the storage portion through the oblique hole, and makes the processing of the small pieces more uniform.

The invention according to claim 6 of the present application is characterized in that, in any one of claims 1 to 5, the treatment liquid is any one of a degreasing liquid, an acid solution, and a plating liquid. Is. According to the present invention, the degreasing treatment with the degreasing liquid, the acid treatment with the acid solution, and the plating treatment with the plating liquid can be performed evenly on the small pieces.

According to a seventh aspect of the present invention, there is provided a method for treating a small piece using the small piece treating apparatus according to any one of the first to fifth aspects. A step of preparing a processing device for the small piece body and a processing liquid of the small piece body; a step of accommodating the small piece body in the container; connecting the hanging part to the driving means; The step of immersing in the inside, while vertically moving the driving means, while throwing up the small piece body from the bottom surface part by the processing liquid flowing in through the oblique hole, in one direction around the central vertical axis of the container. And a step of repeating moving.

According to the present invention, when the container is moved downward, the processing liquid flows from the bottom surface portion so as to form a flow obliquely above the storage portion through the oblique holes and is placed on the bottom surface portion. The small piece body is thrown up from the bottom surface part to move in one direction around the central vertical axis of the container. At the same time, when the side surface is also provided with a slanted hole, the processing liquid is also passed through each slanted hole from one side in the same direction as the flow from the bottom surface around the center vertical axis of the container. Since the small pieces flow in, the moving force in the one direction around the central vertical axis of the container is promoted.
Therefore, since the treatment liquid existing near the surface of each small piece is constantly replaced, the effect of the treatment liquid on the small piece is averaged, and the uneven processing of the small piece is eliminated.

Further, the invention according to claim 8 of the present application is characterized in that, in claim 7, the container is moved up and down with its upper end positioned on the surface of the processing liquid. As a result, the same effect as the invention according to claim 2 can be obtained, the flow of the processing liquid flowing into and out of the storage portion through the oblique hole can be stabilized, and the processing of the small pieces can be made more uniform. Can be converted.

The invention according to claim 9 of the present application is the method according to claim 7 or 8, wherein the small piece body is raised from the bottom surface portion by the processing liquid flowing in through the oblique hole and the top surface of the bottom surface portion. It is characterized by comprising a step of moving the driving means up and down at a speed that repeats the state of being mounted on. According to the present invention, similarly to the invention described in claim 3, the movement of the small piece in one direction around the central vertical axis of the container is gradually and substantially uniform for each repeating unit of the vertical movement. Because it will progress to a stable
The uneven processing of the small pieces is further reduced.

Further, according to a tenth aspect of the present invention, in any one of the seventh to ninth aspects, when the container is moved up and down in the processing liquid, the processing liquid passes through the oblique hole. It is characterized by comprising a step of elastically twisting so that the container is rotated by an inflowing reaction. According to the present invention, similarly to the invention described in claim 5, since the processing liquid is elastically twisted so that the container is rotated by the reaction action of flowing in through the oblique hole, the processing is performed by the vertical movement of the container. The impact applied to the liquid is mitigated.

The invention according to claim 11 of the present application is characterized in that, in any one of claims 7 to 10, the treatment is any one of degreasing treatment, acid treatment, and plating treatment. is there. According to the present invention, the degreasing treatment with the degreasing liquid, the acid treatment with the acid solution, and the plating treatment with the plating liquid can be performed evenly on the small pieces.

The method of plating a small piece according to claim 12 of the present application is a method of plating a small piece by using the method of processing a small piece according to any one of claims 7 to 10. Using a degreasing liquid as the liquid, a step of degreasing the small piece by the method for treating a small piece according to any one of claims 7 to 10, a step of washing the degreased small piece with water, A step of acid-treating the washed small pieces with an acid solution as a treatment liquid by the method for treating small pieces according to any one of claims 7 to 10, and an acid-treated small piece. The step of washing the body with water, and the acid-treated small pieces are washed with water using a plating solution as a treatment liquid, and the small pieces are treated by the method of treating small pieces according to any one of claims 7 to 10. Plating process and washing the plated pieces with water And it is characterized by comprising a step of drying after plating, the water-washed small pieces.

According to the present invention, a degreasing step, an acid treatment step,
Since it is possible to reliably process the small pieces in each of the plating steps, it is possible to realize uniform and even plating over the entire small pieces. Further, if the degreasing step to the drying step are carried out in series while being accommodated in one container, the labor and time for transferring the small pieces to another container can be saved, so that an efficient plating process can be performed.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a small piece processing apparatus according to an embodiment of the present invention, and FIG. 2 is a plan view showing the processing apparatus. In FIG. 1 and FIG.
A part of it has been enlarged for easy understanding.

The small piece processing apparatus 1 is mainly composed of a container 2 made of plastic (polypropylene or the like), and the container 2 is provided with a bottom surface portion 3 and a cylindrical side surface portion 5, and the inside thereof. An accommodating portion 7 capable of receiving a small piece is formed therein. The upper part of the container 2 is made of stainless steel (SUS
An arcuate hanging part 9 is attached at 304), and a drive connecting part 11 for connecting to a driving device (not shown) is provided on the uppermost part of the hanging part 9.

Here, the "small piece" used in the present invention will be defined. A small piece is a relatively small piece, such as a lid for hermetically sealing a ceramic package of a crystal unit for mobile communication (or surface mounting), and when processing, multiple pieces are batch processed at once. Such an object means any shape, shape, material and the like. Therefore, in addition to the flat thin plate shape, even if the object has a shape such as a rod shape or an annular shape, these are included in the definition of the small piece body in the present specification. The "lid" is a lid,
It may be expressed as a cover or a lid.

The small piece processing apparatus 1 shown in FIG. 1 is used, for example, to perform a plating process on a small piece body 13 which is an electronic component for a mobile phone. However, the small piece body processing apparatus of the present invention is used. In addition to such treatments, 1 is cleaning with a cleaning liquid, degreasing treatment with a degreasing liquid, acid treatment with an acid solution, alkali treatment with an alkaline solution, neutralization treatment with a neutralizing liquid,
It can also be applied to the case of performing various treatments of the small piece body 13 with a liquid, such as coating treatment with a coating liquid.
In addition, in FIG. 2, the storage amount of the small pieces 13 is shown to be much smaller than the normal amount in order to make the structure of the bottom portion 3 of the container 2 easy to understand and to avoid complicating the drawing. . The normal storage amount of the small piece body 13 is such that the small piece body 13 covers the container bottom portion 3 and overlaps over several tens of layers.

As shown in FIGS. 1 and 2, in this embodiment, oblique holes 15 are formed over the entire surface on both the bottom surface portion 3 and the side surface portion 5 of the container 2. In some cases, it is possible not to provide the oblique holes 15 in the side surface portion 5, but it is desirable to provide the oblique holes 15 in both the bottom surface portion 3 and the side surface portion 5 as in this embodiment.

The oblique hole 15 in the bottom surface portion 3 is shown in FIG.
As shown in an enlarged scale in FIG. 3, for example, all are formed so as to extend substantially in the tangential direction A of a circle having the center of the bottom surface portion 3 at the position where the oblique hole 15 is formed. Of course, it may be formed so as to deviate from the tangential direction A within a range in which the required function can be exhibited. Further, as shown in FIG.
The holes are formed so as to extend in an oblique direction from the positions of the holes on the outer surface side of the bottom surface portion 3 to the positions of the holes on the inner surface side. The outer surface side and the inner surface side of the oblique hole 15 in the bottom surface portion 3 do not necessarily need to be arranged in the tangential direction A, and the shape and arrangement of the outer surface side and the inner surface side of the oblique hole 15 are not particularly limited.

As shown in FIG. 3B, the oblique hole 15 on the side closer to the peripheral edge of the bottom surface portion 3 is formed so as to extend in a relatively horizontal direction, but on the side closer to the center of the bottom surface portion 3. Oblique hole 1
As shown in FIG. 3C, the reference numeral 5 obliquely extends in a direction that is relatively vertical. By inclining the inclination of the oblique holes 15 at the peripheral edge of the bottom surface portion 3 to the side closer to horizontal as described above, the processing liquid flows in the circumferential direction as the processing liquid enters the storage portion as it approaches the peripheral edge of the bottom surface portion 3. The force is increased to create a stronger flow around the central vertical axis of the container.

The oblique hole 15 in the side surface portion 5 is shown in FIG.
As shown in an enlarged view in (a), the side surface portion 5 extends from the hole position D on the outer surface side of the side surface portion 5 to the hole position E on the inner surface side.
It extends long so as to be offset in the circumferential direction. As shown in FIG. 4A, the relationship between the hole position D and the hole position E is set such that the hole position E is located slightly above the hole position D and the hole position D is entered. The treatment liquid may have an upward flow component when it exits the position E of the hole, or the positions D and E of both holes may be set at substantially the same height as shown in FIG. 4B. The upward component at the time of inflow of the processing liquid can be made zero.

Since the oblique holes 15 in the bottom surface portion 3 and the side surface portion 5 are provided with the above-described structure, the container 2 is stored in the storage portion 7 with the processing liquid (in this example, the plating solution is used). When it is moved downward in the liquid), the small piece body 13 is thrown up from the bottom surface part 3 by the processing liquid flowing in through the oblique hole 15 and moves in one direction around the central vertical axis of the container 2. become.

The form of each oblique hole 15 shown in FIGS. 3 and 4 is merely an example. Therefore, the container 2 is moved downward in the processing liquid while the small piece body 13 is housed in the housing portion 7. When this is done, the small piece 1 is made to flow by the processing liquid flowing through the oblique hole 15.
As long as 3 is thrown up from the bottom surface part 3 and moves in one direction around the central vertical axis of the container 2, the oblique holes 15 of another form or other arrangement may be used.

The driving speed of the driving device is such that when the container 2 is moved up and down in the processing liquid while the small piece 13 is housed in the storage portion 7, the small liquid is supplied by the processing liquid flowing through the oblique hole 15. The state where 13 is thrown up from the bottom surface part 3 and the bottom surface part 3
It is designed to move up and down at a speed sufficient to repeat the state of being placed on top. The vertical movement distance is 2 as the vertical movement speed.
If it is set to 0 to 30 mm and the upward and downward movements are set as a unit (1 time) to 2 to 3 times / second, it is possible to handle most small pieces. As a result, the movement of the small piece body 13 in one direction around the central vertical axis of the container 2 gradually and substantially uniformly and stably progresses for each repeating unit of the vertical movement.

The driving device is constructed so as to be able to change the speed of the vertical movement, so that even when the shape or weight of the small piece body 13 is changed or the processing liquid is changed, the driving device can be changed through the oblique hole 15. It is possible to easily and reliably realize a state in which the small piece body 13 is repeatedly lifted up from the bottom surface portion 3 and placed on the bottom surface portion 3 by the inflowing processing liquid.

The hanging portion 9 is made of a plate-shaped metal material (SUS).
304) is formed by bending, and based on its overall structure and metal properties, it can be elastically twisted in the rotating direction when a force for rotating the container 2 in the horizontal direction is applied. It is like this. In this embodiment,
A plate-shaped drive connecting portion 11 is integrally fixed to a central portion in the longitudinal direction of the suspending portion 9, and the plate-like drive connecting portion 11 and the drive connecting portion 11 of the suspending portion 9 are provided.
The vicinity of the elastic member causes the elastic twist. Needless to say, the container 2 may have any structure as long as it can be elastically twisted in the rotation direction, and is not limited to the above embodiment. Due to this twistable structure, when the container 2 is moved up and down in the processing liquid, the reaction liquid flows into the container 2 from the circumferential direction through the oblique holes 15 by the reaction, so that the processing liquid flows in the direction in which the container 2 flows. Since the container 2 is twisted so as to rotate in the opposite direction and the container 2 is rotated accordingly, the small piece body 13 is rotated around the container 2 relative to the container 2.

As described above, since the processing liquid is elastically twisted so that the container 2 is rotated by the reaction of the processing liquid flowing in through the oblique hole 15, the shock applied to the processing liquid by the vertical movement of the container 2 is It is absorbed and relaxed by the rotation of the container 2 due to the twist. This makes it possible to stabilize the flow of the processing liquid flowing in and out of the storage portion 7 through the oblique hole 15, and to further homogenize the processing of the small piece bodies 13.

Further, since the small piece bodies 13 and the container 2 are moved so as to relatively rotate in the opposite directions to each other, a new treatment liquid always circulates on the surfaces of all the small piece bodies 13. The plating operation is promoted, all the small pieces 13 are plated evenly, and one small piece 13 is also plated uniformly. Of course, such an effect can be similarly obtained in the above-mentioned treatments other than the plating treatment.

Next, a method of plating the small piece 13 using the small piece processing apparatus 1 will be described.
As shown in FIG. 5A, the processing apparatus 1 for the small piece body and the plating solution are prepared, the small piece body 13 is housed in the container 2, and the suspending portion 9 of the container 2 is connected via the drive connecting portion 11. While being connected to the driving device, the container 2 is placed in another container containing the plating solution 17 and immersed in the plating solution 17. At this time, the small piece body 13 is placed on the bottom surface portion 3 of the container 2.

Next, the drive device is driven to drive the drive connecting portion 1.
1 is moved up and down at the speed mentioned above, whereby the container 2 is moved up and down in the plating solution 17. The container 2 is arranged such that its upper end is located on the liquid surface of the plating liquid 17 at both the uppermost and lowermost positions of the vertical movement.
That is, the container 2 is moved up and down with its upper end positioned on the surface of the processing liquid. If the upper end of the container 2 is moved up and down within a moving range where it rises and falls above and below the processing liquid surface, the liquid surface of the processing liquid is largely agitated, and irregular turbulent flow easily occurs in the processing liquid. In the embodiment, since the container 2 is moved up and down with the upper end of the container 2 positioned on the surface of the processing liquid,
It is possible to reduce the possibility that a large turbulent flow will be generated in the processing liquid due to the vertical movement of the container 2.

It is needless to say that the present invention is not limited to the one in which the container 2 is moved up and down with its upper end positioned on the surface of the processing liquid. By making the shape of the upper end of the container smooth and low in resistance along the side surface portion 5, the turbulent flow is hardly generated even when the container is moved up and down within a moving range that appears above and below the processing liquid surface. Is possible.

When the container 2 is moved downward, as shown in FIG.
As shown in FIG.
Through the side wall 5 to form a flow obliquely above the storage portion 7, and from the side surface portion 5 as shown in FIG. 5C, the flow is directed slightly inward from the tangential direction of the horizontal circular cross section of the storage portion 7. (Flow in the same direction as the horizontal flow component of the plating liquid 17 flowing from the bottom surface portion 3) is formed. As described above, the small pieces 13 placed on the bottom surface part 3 are flowed from the slant hole 15 provided in the bottom surface part 3 into the housing part 7 by the plating liquid 17 flowing into the housing part 7.
While receiving the power of various things and being thrown up from the bottom part 3,
It is moved in one direction around the central vertical axis of the container 2. At the same time, the plating liquid 17 flowing into the housing portion 7 from the oblique hole 15 of the side surface portion 5 promotes the movement in the one direction around the central vertical axis.

Next, when the container 2 moves upward, as shown in FIG.
As shown in FIG.
As shown in (b), the plating solution 17 is caused to flow out from the oblique hole 15 of the side surface portion 5 in the direction opposite to the inflow direction when the container 2 moves downward as indicated by the arrow.

At this time, since the small piece body 13 is in a state of being raised from the bottom surface portion 3 in the one direction, the plating solution 1
The force due to the outflow of 7 (force in the direction opposite to the inflow) is slightly affected. The reason is that the influence of the flow output of the plating liquid is great in the vicinity of the slant hole 15, but becomes smaller as the distance from the slant hole 15 increases. Further, the small piece body 13 in the raised state is the container 2
When the plating solution from the sloping hole 15 is filled with the plating solution, the sloping hole 15 provided on the bottom surface part 3 is closed by the slag hole 15 provided on the bottom surface part 3 immediately. The outflow of 17 is greatly reduced. Based on these, when the container 2 moves upward,
The small piece body 13 hardly moves in the direction opposite to the one direction around the center vertical axis of the container 2.

When the container 2 is moved downward in the plating solution 17, the plating solution 17 passes through the oblique hole 15 and the container 2
The reaction that flows in the circumferential direction of the
(B) Twist elastically as shown in (c) (twist in the direction of the arrow near the suspending portion 9). Thereby, the direction in which the plating solution flows into the container 2 (the small piece 13
Rotation direction) and the opposite direction. Subsequently, when the container 2 is moved upward, as shown in FIGS. 6B and 6C, the container 2 is rotated in the original direction by the restoring force based on the twist deformation. Thus, the container 2 based on the twist deformation
By the rotation of, the shock applied to the processing liquid by the vertical movement of the container is absorbed. Therefore, the flow of the processing liquid flowing in and out of the storage portion 7 through the oblique hole 15 is stabilized.

That is, according to the plating method of the present embodiment, the container 2 is accommodated in the container 2 by repeating the downward movement and the upward movement of the container 2 by the vertical drive of the driving device. The small piece body 13 that has been formed repeats the state in which it is thrown up from the bottom surface portion 3 under the force of the plating solution 17 flowing in as described above, and the state in which it is placed on the bottom surface portion 3 again, and the central vertical axis line of the container 2 is repeated. Keep moving in one direction around. At that time, the plating solution itself in the container 2 also reflects the stable movement state of the small piece body 13 in the one direction around the central vertical axis, and a spiral flow is generated in the same direction. .

The plating treatment of the small pieces has been described above. However, instead of the plating liquid, other treatment liquids such as a degreasing liquid, an acid solution, an alkaline solution, a neutralizing liquid, a cleaning liquid and a coating liquid can be used. Each process can be performed by performing the same operation. For example, when performing a series of processes of degreasing, plating, washing with water and drying on the small piece 13, as shown in FIG. 7, degreasing using a degreasing solution, washing with water after degreasing, and acid using an acid solution are performed. Treatment, washing with water after acid treatment, plating treatment using a plating solution, going through each step of washing with water after plating treatment and drying of small pieces, when performing degreasing treatment, acid treatment and plating treatment in these steps, As described with reference to FIGS. 5 and 6, each processing can be similarly performed by applying the small piece processing apparatus 1 of the present invention.

Further, from the degreasing step to the drying step,
The small pieces 13 to be treated may be allowed to proceed in series while being contained in one container 2. If such a series of processes is adopted, it is possible to perform efficient work without the need to take out the small piece 13 from the processing container or transfer it to another container for each processing.

[0047]

According to the present invention, when the container is moved downwardly, the processing liquid flows from the bottom surface portion through the oblique holes so as to form a flow obliquely above the storage portion, and the processing liquid flows onto the bottom surface portion. The action of moving the placed small piece in one direction around the central vertical axis of the container while throwing it up from the bottom part is generated. At the same time, when the side surface is also provided with a slanted hole, the processing liquid is also passed through each slanted hole from one side in the same direction as the flow from the bottom surface around the center vertical axis of the container. Since the small pieces flow in, the moving force in the one direction around the central vertical axis of the container is promoted.
Therefore, since the treatment liquid existing near the surface of each small piece is constantly replaced, the effect of the treatment liquid on the small piece is averaged, and the uneven processing of the small piece is eliminated.

[Brief description of drawings]

FIG. 1 is a front view showing a processing apparatus for a small piece according to the present invention, a part of which is enlarged and shown together.

FIG. 2 is a plan view showing a small piece processing apparatus according to the present invention, in which a part is enlarged and shown together.

FIG. 3A is a plan view showing an enlarged oblique hole on the bottom surface portion, and FIG. 3B is a plan view showing the oblique hole on the bottom surface portion.
3B is a cross-sectional view taken along the line BB of FIG. 3C, and FIG. 3C is a cross-sectional view taken along the line C-C of FIG.

4 (a) and 4 (b) are enlarged front views of main parts showing the form of oblique holes in the side surface of the container.

FIG. 5 (a) is an explanatory view showing a state in which a container is placed in a container containing a plating solution and immersed in the plating solution in the method of plating a small piece, and FIG. It is an explanatory view showing a state in which the plating liquid flows obliquely upward from the "bottom part" through the respective oblique holes to the upper part of the storage part when moved to
(C) is an explanatory view showing a state in which the plating solution flows slightly inward from the tangential direction of the horizontal circular cross section of the storage portion from the “side surface portion” when the container moves downward.

FIG. 6A is an explanatory view showing a state in which the plating solution flows out from each of the oblique holes of the “bottom portion” when the container moves upward, and FIG. 6B shows when the container moves upward. It is explanatory drawing which shows a mode that a plating liquid flows out from each diagonal hole of a "side surface part."

FIG. 7 is a process chart showing each step of a method of plating a small piece.

[Explanation of symbols]

1 Small piece processing equipment 2 containers 3 Bottom part 5 Sides 7 storage 9 Hanging part 11 Drive connection 13 small pieces 15 oblique hole 17 Plating liquid (treatment liquid)

Claims (12)

[Claims] 1. A container having a bottomed cylindrical shape capable of receiving a small piece in a storage portion surrounded by a bottom surface portion and a side surface portion, a suspending portion attached to the container, and a suspension portion connected to the suspending portion. A driving means for moving the container up and down, at least a bottom surface portion of the bottom surface portion and side surface portion of the container,
Slanted holes for circulating the processing liquid between the inside and outside of the storage part are formed dispersedly over the entire surface, and the sloping holes are formed in a state where the small pieces are stored in the storage part. When the container is moved downward in the processing liquid, the small piece body is thrown up from the bottom surface part by the processing liquid flowing through the oblique hole, and moves in one direction around the central vertical axis of the container. A processing device for a small piece, which is formed so that it can be processed. 2. The small piece processing apparatus according to claim 1, wherein the container is formed so as to move up and down with its upper end positioned on the surface of the processing liquid. 3. The vertical movement speed of the drive means according to claim 1 or 2, when the container is stored in the storage portion and the container is moved up and down in the processing liquid. A treatment apparatus for a small piece body, wherein the state in which the small piece body is raised from the bottom surface portion and the state in which the small piece body is placed on the bottom surface portion is repeated by the processing liquid flowing in through the hole. 4. The method according to claim 1, wherein
A processing unit for a small piece, wherein the vertical movement speed of the drive means is variable. 5. The method according to any one of claims 1 to 4,
The suspending portion is formed so as to elastically twist so that the container is rotated by a reaction when the container moves up and down in the processing liquid due to a reaction that the processing liquid flows in through the oblique hole. Small piece processing device characterized by being 6. The method according to any one of claims 1 to 5,
A treatment device for small pieces, wherein the treatment liquid is a degreasing liquid, an acid solution, or a plating liquid. 7. A method for processing a small piece using the small piece processing device according to claim 1, wherein the small piece processing device and the processing liquid for the small piece are prepared. A step of accommodating the small piece body in the container, a step of connecting the suspending portion to the drive means and immersing the container in the treatment liquid, a vertical movement of the drive means, While throwing up the small piece body from the bottom surface portion by the treatment liquid flowing in through the hole, repeating the step of moving the small piece body in one direction around the central vertical axis of the container. Processing method. 8. The method for processing a small piece according to claim 7, wherein the container moves up and down with its upper end positioned on the surface of the processing liquid. 9. The driving according to claim 7 or 8, wherein the state where the small piece body is raised from the bottom surface portion and the state where the small piece body is placed on the bottom surface portion are repeated by the processing liquid flowing in through the oblique hole. A method for treating a small piece, comprising the step of moving the means up and down. 10. The container according to claim 7, wherein when the container is moved up and down in the processing liquid, the container is rotated by a reaction that the processing liquid flows in through the oblique hole. A method for treating a small piece, comprising the step of elastically twisting. 11. The method for treating a small piece according to claim 7, wherein the treatment is any one of degreasing treatment, acid treatment and plating treatment. 12. A method for plating a small piece by using the method for processing a small piece according to claim 7, wherein a degreasing liquid is used as a treatment liquid to remove the small piece. Claims 7 to 1
0 the step of degreasing by the method for treating a small piece according to any one of 0, the step of washing the degreased small piece with water, after degreasing, the washed small piece using an acid solution as a treatment liquid A step of acid-treating the small pieces by the method for treating small pieces according to any one of claims 7 to 10, a step of washing the acid-treated small pieces with water, and a small piece washed with water after the acid treatment. And a step of plating the small pieces by the method for processing the small pieces according to any one of claims 7 to 10, using a plating solution as a treatment liquid, and a step of washing the plated small pieces with water. And a step of drying the washed small pieces after the plating treatment, the method for performing plating treatment on the small pieces.